BRAKES

SECTION

BRC

BRAKE CONTROL SYSTEM

A

B

C

D

E

CONTENTS
VDC/TCS/ABS

Component Parts Location ...................
C1111 ABS MOTOR, MOTOR RELAY SYSTEM ................................................................... 36
.
Description ....
Diagnosis Procedure .............................................. 71
.
Special Repair Requirement ..........................
DIAGNOSIS AND REPAIR WORKFLOW
[VDC/TCS/ABS]

< BASIC INSPECTION >

BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flo...
DIAGNOSIS AND REPAIR WORKFLOW
[VDC/TCS/ABS]

< BASIC INSPECTION >
OVERALL SEQUENCE

A

B

C

D

E

BRC

G

H

I

J

K

L

...
DIAGNOSIS AND REPAIR WORKFLOW
[VDC/TCS/ABS]

< BASIC INSPECTION >

2.PERFORM THE SELF-DIAGNOSIS
Check the DTC display with...
DIAGNOSIS AND REPAIR WORKFLOW
[VDC/TCS/ABS]

< BASIC INSPECTION >

Diagnostic Work Sheet

INFOID:0000000004497233

A

B

C...
INSPECTION AND ADJUSTMENT
[VDC/TCS/ABS]

< BASIC INSPECTION >

INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING...
INSPECTION AND ADJUSTMENT
[VDC/TCS/ABS]
< BASIC INSPECTION >
1. On the CONSULT-III screen, touch "WORK SUPPORT" and “ST AN...
VDC
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

FUNCTION DIAGNOSIS
VDC
System Diagram

INFOID:0000000004497238

JPFIC0018GB

Sy...
VDC
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

Component Parts Location

INFOID:0000000004497240

A

B

C

D

E

BRC

G

H

I
...
VDC
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Component parts

Reference

Pump

BRC-36, "Description"

Motor
Actuator relay (m...
TCS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

TCS

A

System Diagram

INFOID:0000000004512083

B

C

D

E

BRC

G

H

I
JPFIC...
TCS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

Component Parts Location

INFOID:0000000004512084

JPFIC0019ZZ

1.

Steering an...
TCS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Component parts

Reference

A

Pump

BRC-36, "Description"

Motor
Actuator relay...
ABS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

ABS
System Diagram

INFOID:0000000004512086

JPFIC0018GB

System Description

I...
ABS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

Component Parts Location

INFOID:0000000004512087

A

B

C

D

E

BRC

G

H

I
...
ABS
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Component parts

Reference

Pump

BRC-36, "Description"

Motor
Actuator relay (m...
EBD
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

EBD

A

System Diagram

INFOID:0000000004512089

B

C

D

E

BRC

G

H

I
JPFIC...
EBD
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

Component Parts Location

INFOID:0000000004512090

JPFIC0019ZZ

1.

Steering an...
EBD
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Component parts

Reference

A

Pump

BRC-36, "Description"

Motor
Actuator relay...
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM [...
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >

×: Applicable

: O...
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
SELECT MONITOR ITEM...
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Test Item

A

ABS S...
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
[VDC/TCS/ABS]

< FUNCTION DIAGNOSIS >
Test item

Display ...
C1101, C1102, C1103, C1104 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

COMPONENT DIAGNOSIS

A

C1101, C1102, C110...
C1101, C1102, C1103, C1104 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
YES >> GO TO 4.
NO
>> Repair or replace err...
C1101, C1102, C1103, C1104 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
>> END

A

B

C

D

E

BRC

G

H

I

J

K

...
C1105, C1106, C1107, C1108 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1105, C1106, C1107, C1108 WHEEL SENSOR
De...
C1105, C1106, C1107, C1108 WHEEL SENSOR
< COMPONENT DIAGNOSIS >
2. Disconnect ABS actuator and electric unit (control unit...
C1105, C1106, C1107, C1108 WHEEL SENSOR
[VDC/TCS/ABS]
< COMPONENT DIAGNOSIS >
Always perform the neutral position adjustme...
C1109 POWER AND GROUND SYSTEM
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1109 POWER AND GROUND SYSTEM

A

Description

INFOI...
C1109 POWER AND GROUND SYSTEM
[VDC/TCS/ABS]
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> Perform the tr...
C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1110, C1153, C1...
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1111 ABS MOTOR, MOTOR RELAY SYSTEM
Descriptio...
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
ABS actuator and electric unit (control unit)
C...
C1114 ACTUATOR RELAY SYSTEM
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1114 ACTUATOR RELAY SYSTEM
Description

INFOID:000000...
C1114 ACTUATOR RELAY SYSTEM
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

Special Repair Requirement

INFOID:0000000004512097

A...
C1115 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1115 WHEEL SENSOR
Description

INFOID:0000000004497282

When t...
C1115 WHEEL SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
Measurement connector and terminal for power supply circuit

ABS...
C1116 STOP LAMP SWITCH
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1116 STOP LAMP SWITCH
Description

INFOID:0000000004497287...
C1116 STOP LAMP SWITCH
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
NO
>> Repair or replace error-detected parts.

4.CHECK STOP ...
C1120, C1122, C1124, C1126 IN ABS SOL
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1120, C1122, C1124, C1126 IN ABS SOL
Descri...
C1120, C1122, C1124, C1126 IN ABS SOL
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

Special Repair Requirement

INFOID:000000000...
C1121, C1123, C1125, C1127 OUT ABS SOL
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1121, C1123, C1125, C1127 OUT ABS SOL
Desc...
C1121, C1123, C1125, C1127 OUT ABS SOL
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

Special Repair Requirement

INFOID:00000000...
C1130 ENGINE SIGNAL
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1130 ENGINE SIGNAL
Description

INFOID:0000000004497302

ABS ...
C1142 PRESS SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1142 PRESS SENSOR

A

Description

INFOID:0000000004497310

Th...
C1142 PRESS SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

Special Repair Requirement

INFOID:0000000004512802

1.ADJUSTME...
C1143 STEERING ANGLE SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1143 STEERING ANGLE SENSOR

A

Description

INFOID:00...
C1143 STEERING ANGLE SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
Steering angle sensor

IPDM E/R

Connector

Terminal

C...
C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1144 INCOMPLETE STEERING ANGLE ...
C1145, C1146 YAW RATE/SIDE G SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1145, C1146 YAW RATE/SIDE G SENSOR
Descriptio...
C1145, C1146 YAW RATE/SIDE G SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
NO
>> GO TO 2.

2.CHECK YAW RATE/SIDE G SENSOR ...
C1145, C1146 YAW RATE/SIDE G SENSOR
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
>> END

Revision: 2008 October

BRC-56

2009 37...
C1147, C1148, C1149, C1150 USV/HSV LINE
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1147, C1148, C1149, C1150 USV/HSV LINE

A...
C1147, C1148, C1149, C1150 USV/HSV LINE
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
ABS actuator and electric unit (control uni...
C1155 BRAKE FLUID LEVEL SWITCH
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >

C1155 BRAKE FLUID LEVEL SWITCH

A

Description

INF...
C1155 BRAKE FLUID LEVEL SWITCH
[VDC/TCS/ABS]

< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 4.
NO
...
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Brc

  1. 1. BRAKES SECTION BRC BRAKE CONTROL SYSTEM A B C D E CONTENTS VDC/TCS/ABS Component Parts Location .....................................17 . Component Description ..........................................17 . BASIC INSPECTION ................................... 4 . DIAGNOSIS AND REPAIR WORKFLOW ......... 4 . Work Flow ................................................................ 4 . Diagnostic Work Sheet ............................................. 7 . INSPECTION AND ADJUSTMENT .................... 8 . ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT ......................................................... 8 . ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description ................................. 8 . ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement ...... 8 ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION ................................................. 8 . ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description ......................... 8 . ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement ......................................................................... 8 . FUNCTION DIAGNOSIS ............................. 10 . VDC ...................................................................10 . System Diagram ..................................................... 10 . System Description ................................................ 10 . Component Parts Location ..................................... 11 . Component Description .......................................... 11 . TCS ....................................................................13 . System Diagram ..................................................... 13 . System Description ................................................ 13 . Component Parts Location ..................................... 14 . Component Description .......................................... 14 . ABS ...................................................................16 . System Diagram ..................................................... 16 . System Description ................................................ 16 . Revision: 2008 October EBD ................................................................... 19 System Diagram .....................................................19 . System Description .................................................19 . Component Parts Location .....................................20 . Component Description ..........................................20 . DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] ....... 22 CONSULT-III Function ...........................................22 . COMPONENT DIAGNOSIS ........................ 27 . BRC G H I J C1101, C1102, C1103, C1104 WHEEL SENSOR ................................................................... 27 Description ..............................................................27 . DTC Logic ...............................................................27 . Diagnosis Procedure ..............................................27 . Special Repair Requirement ...................................28 . K L C1105, C1106, C1107, C1108 WHEEL SENSOR ................................................................... 30 Description ..............................................................30 . DTC Logic ...............................................................30 . Diagnosis Procedure ..............................................30 . Special Repair Requirement ...................................31 . M N C1109 POWER AND GROUND SYSTEM ........ 33 Description ..............................................................33 . DTC Logic ...............................................................33 . Diagnosis Procedure ..............................................33 . Special Repair Requirement ...................................34 . C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) ................. 35 DTC Logic ...............................................................35 . Diagnosis Procedure ..............................................35 . Special Repair Requirement ...................................35 . BRC-1 2009 370Z O P
  2. 2. C1111 ABS MOTOR, MOTOR RELAY SYSTEM ................................................................... 36 . Description ............................................................. 36 . DTC Logic .............................................................. 36 . Diagnosis Procedure ............................................. 36 . Special Repair Requirement .................................. 37 . C1114 ACTUATOR RELAY SYSTEM .............. 38 . Description ............................................................. 38 . DTC Logic .............................................................. 38 . Diagnosis Procedure ............................................. 38 . Special Repair Requirement .................................. 39 . C1115 WHEEL SENSOR .................................. 40 . C1145, C1146 YAW RATE/SIDE G SENSOR... 54 Description ............................................................. 54 . DTC Logic .............................................................. 54 . Diagnosis Procedure .............................................. 54 . Special Repair Requirement .................................. 55 . C1147, C1148, C1149, C1150 USV/HSV LINE 57 ... Description ............................................................. 57 . DTC Logic .............................................................. 57 . Diagnosis Procedure .............................................. 57 . Special Repair Requirement .................................. 58 . C1155 BRAKE FLUID LEVEL SWITCH .......... 59 . Description ............................................................. 40 . DTC Logic .............................................................. 40 . Diagnosis Procedure ............................................. 40 . Special Repair Requirement .................................. 41 . Description ............................................................. 59 . DTC Logic .............................................................. 59 . Diagnosis Procedure .............................................. 59 . Component Inspection ........................................... 60 . Special Repair Requirement .................................. 60 . C1116 STOP LAMP SWITCH ........................... 42 . U1000, U1002 CAN COMM CIRCUIT .............. 61 . Description ............................................................. 42 . DTC Logic .............................................................. 42 . Diagnosis Procedure ............................................. 42 . Component Inspection ........................................... 43 . Special Repair Requirement .................................. 43 . Description ............................................................. 61 . DTC Logic .............................................................. 61 . Diagnosis Procedure .............................................. 61 . Special Repair Requirement .................................. 61 . C1120, C1122, C1124, C1126 IN ABS SOL .... 44 . Description ............................................................. 44 . DTC Logic .............................................................. 44 . Diagnosis Procedure ............................................. 44 . Special Repair Requirement .................................. 45 . C1121, C1123, C1125, C1127 OUT ABS SOL... 46 Description ............................................................. 46 . DTC Logic .............................................................. 46 . Diagnosis Procedure ............................................. 46 . Special Repair Requirement .................................. 47 . C1130 ENGINE SIGNAL .................................. 48 . Description ............................................................. 48 . DTC Logic .............................................................. 48 . Diagnosis Procedure ............................................. 48 . Special Repair Requirement .................................. 48 . C1142 PRESS SENSOR .................................. 49 . Description ............................................................. 49 . DTC Logic .............................................................. 49 . Diagnosis Procedure ............................................. 49 . Special Repair Requirement .................................. 50 . C1143 STEERING ANGLE SENSOR ............... 51 . Description ............................................................. 51 . DTC Logic .............................................................. 51 . Diagnosis Procedure ............................................. 51 . Special Repair Requirement .................................. 52 . C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT .................................. 53 . DTC Logic .............................................................. 53 . Diagnosis Procedure ............................................. 53 . Special Repair Requirement .................................. 53 . Revision: 2008 October POWER SUPPLY AND GROUND CIRCUIT .... 62 . Description ............................................................. 62 . Diagnosis Procedure .............................................. 62 . PARKING BRAKE SWITCH ............................. 64 . Description ............................................................. 64 . Diagnosis Procedure .............................................. 64 . Component Inspection ........................................... 64 . VDC OFF SWITCH ........................................... 66 . Description ............................................................. 66 . Diagnosis Procedure .............................................. 66 . Component Inspection ........................................... 67 . Special Repair Requirement .................................. 67 . ABS WARNING LAMP ..................................... 68 . Description ............................................................. 68 . Component Function Check .................................. 68 . Diagnosis Procedure .............................................. 68 . Special Repair Requirement .................................. 68 . BRAKE WARNING LAMP ................................ 69 . Description ............................................................. 69 . Component Function Check .................................. 69 . Diagnosis Procedure .............................................. 69 . Special Repair Requirement .................................. 69 . VDC OFF INDICATOR LAMP .......................... 70 . Description ............................................................. 70 . Component Function Check .................................. 70 . Diagnosis Procedure .............................................. 70 . Special Repair Requirement .................................. 70 . SLIP INDICATOR LAMP .................................. 71 . Description ............................................................. 71 . Component Function Check .................................. 71 . BRC-2 2009 370Z
  3. 3. Diagnosis Procedure .............................................. 71 . Special Repair Requirement .................................. 71 . ECU DIAGNOSIS ........................................ 72 . ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .............................................72 . Reference Value .................................................... 72 . Wiring Diagram - BRAKE CONTROL SYSTEM -.... 76 Fail-Safe ................................................................. 79 . DTC Inspection Priority Chart ................................ 80 . DTC Index .............................................................. 81 . SYMPTOM DIAGNOSIS ............................. 82 . EXCESSIVE ABS FUNCTION OPERATION FREQUENCY ....................................................82 . Diagnosis Procedure .............................................. 82 . UNEXPECTED PEDAL REACTION .................83 . Precautions for Harness Repair .............................90 . PREPARATION .......................................... 91 . A PREPARATION ................................................. 91 Special Service Tool ...............................................91 . B ON-VEHICLE REPAIR ................................ 92 . WHEEL SENSOR .............................................. 92 C FRONT WHEEL SENSOR ........................................92 . FRONT WHEEL SENSOR : Exploded View ..........92 . FRONT WHEEL SENSOR : Removal and Installation .......................................................................92 . D REAR WHEEL SENSOR ..........................................93 . REAR WHEEL SENSOR : Exploded View .............93 . REAR WHEEL SENSOR : Removal and Installation ..........................................................................93 . Diagnosis Procedure .............................................. 83 . FRONT SENSOR ROTOR ........................................94 . FRONT SENSOR ROTOR : Exploded View ..........94 . FRONT SENSOR ROTOR : Removal and Installation .......................................................................94 . BRC SENSOR ROTOR .............................................. 94 THE BRAKING DISTANCE IS LONG ...............84 . E Diagnosis Procedure .............................................. 84 . ABS FUNCTION DOES NOT OPERATE ..........85 . Diagnosis Procedure .............................................. 85 . Diagnosis Procedure .............................................. 86 . REAR SENSOR ROTOR ..........................................94 . REAR SENSOR ROTOR : Exploded View .............94 . REAR SENSOR ROTOR : Removal and Installation ..........................................................................94 . VEHICLE JERKS DURING VDC/TCS/ABS CONTROL .........................................................87 . ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) ............................................. 95 Diagnosis Procedure .............................................. 87 . Exploded View ........................................................95 . Removal and Installation ........................................95 . PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS .............................................86 . NORMAL OPERATING CONDITION ................88 . Description ............................................................. 88 . Exploded View ........................................................97 . Removal and Installation ........................................97 . PRECAUTIONS .................................................89 . H I J K YAW RATE/SIDE G SENSOR .......................... 97 PRECAUTION ............................................. 89 . G STEERING ANGLE SENSOR ........................... 98 Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................................ 89 . Precaution for Procedure without Cowl Top Cover 89 .... Precaution for Brake System ................................. 89 . Precaution for Brake Control .................................. 90 . Exploded View ........................................................98 . Removal and Installation ........................................98 . L M VDC OFF SWITCH ............................................ 99 Removal and Installation ........................................99 . N O P Revision: 2008 October BRC-3 2009 370Z
  4. 4. DIAGNOSIS AND REPAIR WORKFLOW [VDC/TCS/ABS] < BASIC INSPECTION > BASIC INSPECTION DIAGNOSIS AND REPAIR WORKFLOW Work Flow INFOID:0000000004497232 PRECAUTIONS FOR DIAGNOSIS If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit (control unit) or tires have been replaced, or if wheel alignment has been adjusted, be sure to adjust neutral position of steering angle sensor before driving. Refer to BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description". Revision: 2008 October BRC-4 2009 370Z
  5. 5. DIAGNOSIS AND REPAIR WORKFLOW [VDC/TCS/ABS] < BASIC INSPECTION > OVERALL SEQUENCE A B C D E BRC G H I J K L M N O JSFIA0239GB P DETAILED FLOW 1.COLLECT THE INFORMATION FROM THE CUSTOMER Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the diagnosis work sheet. Refer to BRC-7, "Diagnostic Work Sheet". >> GO TO 2. Revision: 2008 October BRC-5 2009 370Z
  6. 6. DIAGNOSIS AND REPAIR WORKFLOW [VDC/TCS/ABS] < BASIC INSPECTION > 2.PERFORM THE SELF-DIAGNOSIS Check the DTC display with the self-diagnosis function. Is there any DTC displayed? YES >> GO TO 3. NO >> GO TO 4. 3.PERFORM THE SYSTEM DIAGNOSIS Perform the diagnosis applicable to the displayed DTC. Refer to BRC-81, "DTC Index". >> GO TO 7. 4.CHECK THE SYMPTOM THAT IS NOT CONSIDERED A SYSTEM MALFUNCTION Check that the symptom is a normal operation that is not considered a system malfunction. Refer to BRC-88, "Description". Is the symptom a normal operation? YES >> INSPECTION END NO >> GO TO 5. 5.CHECK THE WARNING LAMP AND INDICATOR LAMP FOR ILLUMINATION Check that the warning lamp and indicator lamp illuminate. • ABS warning lamp: refer to BRC-68, "Description". • Brake warning lamp: refer to BRC-69, "Description". • VDC OFF indicator lamp: refer to BRC-70, "Description". • SLIP indicator lamp: refer to BRC-71, "Description". Is ON/OFF timing normal? YES >> GO TO 6. NO >> GO TO 2. 6.PERFORM THE DIAGNOSIS BY SYMPTOM Perform the diagnosis applicable to the symptom. >> GO TO 7. 7.REPAIR OR REPLACE THE MALFUNCTIONING PARTS Repair or replace the specified malfunctioning parts. >> GO TO 8. 8.MEMORY CLEAR Perform self-diagnosis memory clear. >> GO TO 9. 9.FINAL CHECK Perform the self-diagnosis again, and check that the malfunction is repaired completely. Is no other DTC present and the repair completed? YES >> INSPECTION END NO >> GO TO 3. Revision: 2008 October BRC-6 2009 370Z
  7. 7. DIAGNOSIS AND REPAIR WORKFLOW [VDC/TCS/ABS] < BASIC INSPECTION > Diagnostic Work Sheet INFOID:0000000004497233 A B C D E BRC G H I SFIA3265E J K L M N O P Revision: 2008 October BRC-7 2009 370Z
  8. 8. INSPECTION AND ADJUSTMENT [VDC/TCS/ABS] < BASIC INSPECTION > INSPECTION AND ADJUSTMENT ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description INFOID:0000000004497234 After replacing the ABS actuator and electric unit (control unit), perform the neutral position adjustment for the steering angle sensor. ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement INFOID:0000000004497235 1.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR Perform the neutral position adjustment for the steering angle sensor. >> Refer to BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement". ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description INFOID:0000000004497236 When doing work that applies to the list below, make sure to adjust neutral position of steering angle sensor before running vehicle. ×: Required –: Not required Situation Adjustment of steering angle sensor neutral position Removing/Installing ABS actuator and electric unit (control unit) — Replacing ABS actuator and electric unit (control unit) × Removing/Installing steering angle sensor × Replacing steering angle sensor × Removing/Installing steering components × Replacing steering components × Removing/Installing suspension components × Replacing suspension components × Removing/Installing tire — Change tires to new ones — Tire rotation — Adjusting wheel alignment × ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement INFOID:0000000004497237 ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION CAUTION: To adjust neutral position of steering angle sensor, make sure to use CONSULT-III. (Adjustment cannot be done without CONSULT-III.) 1.ALIGN THE VEHICLE STATUS Stop vehicle with front wheels in straight-ahead position. >> GO TO 2. 2.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR Revision: 2008 October BRC-8 2009 370Z
  9. 9. INSPECTION AND ADJUSTMENT [VDC/TCS/ABS] < BASIC INSPECTION > 1. On the CONSULT-III screen, touch "WORK SUPPORT" and “ST ANGLE SENSOR ADJUSTMENT" in order. 2. Touch “START”. CAUTION: Never touch steering wheel while adjusting steering angle sensor. 3. After approximately 10 seconds, touch “END”. NOTE: After approximately 60 seconds, it ends automatically. 4. Turn the ignition switch OFF, then turn it ON again. CAUTION: Be sure to perform above operation. A B C D >> GO TO 3. 3.CHECK DATA MONITOR 1. 2. E Run the vehicle with front wheels in straight-ahead position, then stop. Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal. STR ANGLE SIG BRC : 0±2.5° Is the steering angle within the specified range? YES >> GO TO 4. NO >> Perform the neutral position adjustment for the steering angle sensor again, GO TO 1. G 4.ERASE THE SELF-DIAGNOSIS MEMORY H Erase the self-diagnosis memories of the ABS actuator and electric unit (control unit), and ECM. • ABS actuator and electric unit (control unit): refer to BRC-22, "CONSULT-III Function". • ECM: refer to EC-115, "Diagnosis Description". Are the memories erased? YES >> INSPECTION END NO >> Check the items indicated by the self-diagnosis. I J K L M N O P Revision: 2008 October BRC-9 2009 370Z
  10. 10. VDC [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > FUNCTION DIAGNOSIS VDC System Diagram INFOID:0000000004497238 JPFIC0018GB System Description INFOID:0000000004497239 • Vehicle Dynamics Control system detects driver′s steering operation amount and brake pedal travel from steering angle sensor and pressure sensor. Using information from yaw rate/side G sensor and wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle driving stability by controlling brake application to 4 wheels and engine output. • During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp. • Electrical system diagnosis by CONSULT-III is available. Revision: 2008 October BRC-10 2009 370Z
  11. 11. VDC [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component Parts Location INFOID:0000000004497240 A B C D E BRC G H I J K L JPFIC0019ZZ 1. Steering angle sensor 2. Front wheel sensor 4. Yaw rate/side G sensor 5. Rear wheel sensor A. Back of spiral cable assembly B. Steering knuckle D. Inside brake master cylinder cover G. E. VDC OFF switch: IP-11, "Exploded View" 3. C. ABS warning lamp, brake warning lamp, VDC OFF indicator lamp, SLIP indicator lamp: MWI-6, "METER SYSTEM : System Description" Rear final drive assembly Component Description Revision: 2008 October F. ABS actuator and electric unit (control unit) M Under center console O P INFOID:0000000004497241 BRC-11 N 2009 370Z
  12. 12. VDC [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component parts Reference Pump BRC-36, "Description" Motor Actuator relay (main relay) ABS actuator and electric unit (control unit) Solenoid valve BRC-38, "Description" BRC-44, "Description", BRC-46, "Description" Pressure sensor BRC-49, "Description" VDC switch-over valve (USV1, USV2, HSV1, HSV2) BRC-57, "Description" Wheel sensor BRC-27, "Description" Yaw rate/side G sensor BRC-54, "Description" Steering angle sensor BRC-51, "Description" VDC OFF switch BRC-66, "Description" ABS warning lamp BRC-68, "Description" Brake warning lamp BRC-69, "Description" VDC OFF indicator lamp BRC-70, "Description" SLIP indicator lamp BRC-71, "Description" Revision: 2008 October BRC-12 2009 370Z
  13. 13. TCS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > TCS A System Diagram INFOID:0000000004512083 B C D E BRC G H I JPFIC0018GB System Description INFOID:0000000004497243 • Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4 wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pre sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine torque at all times. • During TCS operation, TCS informs driver of system operation by flashing SLIP indicator lamp. • Electrical system diagnosis by CONSULT-III is available. J K L M N O P Revision: 2008 October BRC-13 2009 370Z
  14. 14. TCS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component Parts Location INFOID:0000000004512084 JPFIC0019ZZ 1. Steering angle sensor 2. Front wheel sensor 3. ABS actuator and electric unit (control unit) 4. Yaw rate/side G sensor 5. Rear wheel sensor A. Back of spiral cable assembly B. Steering knuckle C. ABS warning lamp, brake warning lamp, VDC OFF indicator lamp, SLIP indicator lamp: MWI-6, "METER SYSTEM : System Description" D. Inside brake master cylinder cover E. VDC OFF switch: IP-11, "Exploded View" F. Under center console G. Rear final drive assembly Component Description Revision: 2008 October INFOID:0000000004512085 BRC-14 2009 370Z
  15. 15. TCS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component parts Reference A Pump BRC-36, "Description" Motor Actuator relay (main relay) ABS actuator and electric unit (control unit) Solenoid valve BRC-38, "Description" B BRC-44, "Description", BRC-46, "Description" Pressure sensor BRC-49, "Description" VDC switch-over valve (USV1, USV2, HSV1, HSV2) BRC-57, "Description" C Wheel sensor BRC-27, "Description" Yaw rate/side G sensor BRC-54, "Description" Steering angle sensor BRC-51, "Description" VDC OFF switch BRC-66, "Description" ABS warning lamp BRC-68, "Description" Brake warning lamp BRC-69, "Description" VDC OFF indicator lamp BRC-70, "Description" SLIP indicator lamp BRC-71, "Description" D E BRC G H I J K L M N O P Revision: 2008 October BRC-15 2009 370Z
  16. 16. ABS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > ABS System Diagram INFOID:0000000004512086 JPFIC0018GB System Description INFOID:0000000004497247 • Anti-Lock Braking System detects wheel revolution while braking, electronically controls braking force, and prevents wheel locking during sudden braking. It improves handling stability and maneuverability for avoiding obstacles. • Electrical system diagnosis by CONSULT-III is available. Revision: 2008 October BRC-16 2009 370Z
  17. 17. ABS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component Parts Location INFOID:0000000004512087 A B C D E BRC G H I J K L JPFIC0019ZZ 1. Steering angle sensor 2. Front wheel sensor 4. Yaw rate/side G sensor 5. Rear wheel sensor A. Back of spiral cable assembly B. Steering knuckle D. Inside brake master cylinder cover G. E. VDC OFF switch: IP-11, "Exploded View" 3. C. ABS warning lamp, brake warning lamp, VDC OFF indicator lamp, SLIP indicator lamp: MWI-6, "METER SYSTEM : System Description" Rear final drive assembly Component Description Revision: 2008 October F. ABS actuator and electric unit (control unit) M Under center console O P INFOID:0000000004512088 BRC-17 N 2009 370Z
  18. 18. ABS [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component parts Reference Pump BRC-36, "Description" Motor Actuator relay (main relay) ABS actuator and electric unit (control unit) Solenoid valve BRC-38, "Description" BRC-44, "Description", BRC-46, "Description" Pressure sensor BRC-49, "Description" VDC switch-over valve (USV1, USV2, HSV1, HSV2) BRC-57, "Description" Wheel sensor BRC-27, "Description" Yaw rate/side G sensor BRC-54, "Description" Steering angle sensor BRC-51, "Description" VDC OFF switch BRC-66, "Description" ABS warning lamp BRC-68, "Description" Brake warning lamp BRC-69, "Description" VDC OFF indicator lamp BRC-70, "Description" SLIP indicator lamp BRC-71, "Description" Revision: 2008 October BRC-18 2009 370Z
  19. 19. EBD [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > EBD A System Diagram INFOID:0000000004512089 B C D E BRC G H I JPFIC0018GB System Description INFOID:0000000004497251 • Electric Brake force Distribution is a following function. ABS actuator and electric unit (control unit) detects subtle slippages between the front and rear wheels during braking. Then is electronically controls the rear braking force (brake fluid pressure) to reducing and reduces rear wheel slippage. Accordingly it improves vehicle stability. • Electrical system diagnosis by CONSULT-III is available. J K L M N O P Revision: 2008 October BRC-19 2009 370Z
  20. 20. EBD [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component Parts Location INFOID:0000000004512090 JPFIC0019ZZ 1. Steering angle sensor 2. Front wheel sensor 3. ABS actuator and electric unit (control unit) 4. Yaw rate/side G sensor 5. Rear wheel sensor A. Back of spiral cable assembly B. Steering knuckle C. ABS warning lamp, brake warning lamp, VDC OFF indicator lamp, SLIP indicator lamp: MWI-6, "METER SYSTEM : System Description" D. Inside brake master cylinder cover E. VDC OFF switch: IP-11, "Exploded View" F. Under center console G. Rear final drive assembly Component Description Revision: 2008 October INFOID:0000000004512091 BRC-20 2009 370Z
  21. 21. EBD [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Component parts Reference A Pump BRC-36, "Description" Motor Actuator relay (main relay) ABS actuator and electric unit (control unit) Solenoid valve BRC-38, "Description" B BRC-44, "Description", BRC-46, "Description" Pressure sensor BRC-49, "Description" VDC switch-over valve (USV1, USV2, HSV1, HSV2) BRC-57, "Description" C Wheel sensor BRC-27, "Description" Yaw rate/side G sensor BRC-54, "Description" Steering angle sensor BRC-51, "Description" VDC OFF switch BRC-66, "Description" ABS warning lamp BRC-68, "Description" Brake warning lamp BRC-69, "Description" VDC OFF indicator lamp BRC-70, "Description" SLIP indicator lamp BRC-71, "Description" D E BRC G H I J K L M N O P Revision: 2008 October BRC-21 2009 370Z
  22. 22. DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] CONSULT-III Function INFOID:0000000004497254 FUNCTION CONSULT-III can display each diagnostic item using the diagnostic test modes shown following. Diagnostic test mode Function Work support This mode enables a technician to adjust some devices faster and more accurately by following the indications on CONSULT-III. Self diagnostic result Self-diagnostic results can be read and erased quickly. Data monitor Input/Output data in the ABS actuator and electric unit (control unit) can be read. Active test CONSULT-III drives some actuators apart from ABS actuator and electric unit (control unit) and also shifts some parameters in a specified range. ECU identification ABS actuator and electric unit (control unit) part number can be read. WORK SUPPORT Item ST ANGLE SENSOR ADJUSTMENT Description Adjusts the neutral position of the steering angle sensor. SELF DIAGNOSTIC RESULT Operation Procedure Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute. Display Item List Refer to BRC-81, "DTC Index". How to Erase Self-diagnosis Results After erasing DTC memory, start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp turn OFF. CAUTION: If memory cannot be erased, perform applicable diagnosis. NOTE: • When the wheel sensor malfunctions, after inspecting the wheel sensor system, ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the system is normal unless the vehicle is driven at approximately 30 km/h (19 MPH) or more for approximately 1 minute. • Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or in case of brake fluid level switch operation (when brake fluid is insufficient). • VDC OFF switch should not stay “ON” position. DATA MONITOR MODE Display Item List Revision: 2008 October BRC-22 2009 370Z
  23. 23. DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > ×: Applicable : Optional item A SELECT MONITOR ITEM Monitor item (Unit) ECU INPUT SIGNALS MAIN SIGNALS FR LH SENSOR [km/h (MPH)] × × FR RH SENSOR [km/h (MPH)] × × RR LH SENSOR [km/h (MPH)] × × RR RH SENSOR [km/h (MPH)] × Remarks × B C Wheel speed FR RH IN SOL (On/Off) (Note 1) × FR RH OUT SOL (On/Off) (Note 1) × FR LH IN SOL (On/Off) (Note 1) × FR LH OUT SOL (On/Off) (Note 1) × RR RH IN SOL (On/Off) (Note 1) × RR RH OUT SOL (On/Off) (Note 1) × RR LH IN SOL (On/Off) (Note 1) × RR LH OUT SOL (On/Off) (Note 1) D × STOP LAMP SW (On/Off) E BRC G Operation status of each solenoid valve H I × Stop lamp switch signal status MOTOR RELAY (On/Off) × Motor and motor relay operation ACTUATOR RLY (On/Off) (Note 1) × Actuator relay operation ABS WARN LAMP (On/Off) × ABS warning lamp OFF LAMP (On/Off) × VDC OFF indicator lamp × VDC OFF switch × SLIP indicator lamp OFF SW (On/Off) × J K L M × SLIP LAMP (On/Off) N BATTERY VOLT (V) × × Battery voltage supplied to the ABS actuator and electric unit (control unit) YAW RATE SEN (d/s) × × Yaw rate detected by yaw rate/side G sensor ACCEL POS SIG (%) × Throttle actuator opening/closing is displayed (Linked with accelerator pedal) × Transverse G detected by yaw rate/side G sensor STR ANGLE SIG (°) × Steering angle detected by steering angle sensor PRESS SENSOR (bar) × Brake fluid pressure detected by pressure sensor SIDE G-SENSOR (m/s2) Revision: 2008 October O BRC-23 2009 370Z P
  24. 24. DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > SELECT MONITOR ITEM Monitor item (Unit) ECU INPUT SIGNALS Remarks MAIN SIGNALS EBD SIGNAL (On/Off) EBD operation ABS SIGNAL (On/Off) ABS operation TCS SIGNAL (On/Off) TCS operation VDC SIGNAL (On/Off) VDC operation EBD FAIL SIG (On/Off) EBD fail-safe signal ABS FAIL SIG (On/Off) ABS fail-safe signal TCS FAIL SIG (On/Off) TCS fail-safe signal VDC FAIL SIG (On/Off) VDC fail-safe signal CRANKING SIG (On/Off) Crank operation FLUID LEV SW (On/Off) × Brake fluid level switch signal status PARK BRAKE SW (On/Off) × Parking brake switch signal status USV [FR-RL] (On/Off) USV [FL-RR] (On/Off) VDC switch-over valve HSV [FR-RL] (On/Off) HSV [FL-RR] (On/Off) V/R OUTPUT (On/Off) Solenoid valve relay activated M/R OUTPUT (On/Off) Actuator motor and motor relay activated ENGINE RPM [tr/min (rpm)] × Engine speed NOTE: 1: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is a operation for checking. ACTIVE TEST MODE CAUTION: • Never perform active test while driving vehicle. • Make sure to completely bleed air from brake system. • The active test cannot be started when ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are ON. • ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are ON during active test. NOTE: • When active test is performed while depressing the pedal, the pedal depression amount will change. This is normal. (Only solenoid valve and ABS motor.) • “TEST IS STOPPED” is displayed 10 seconds after operation start. • After “TEST IS STOPPED” is displayed, to perform test again. Revision: 2008 October BRC-24 2009 370Z
  25. 25. DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Test Item A ABS SOLENOID VALVE • Touch “Up”, “Keep” and “Down”. Then use screen monitor to check that solenoid valve operates as shown in the table below. B Test item Display item Display (Note) On On FR RH OUT SOL Off Off On* USV [FR-RL] Off Off Off Off Off Off Off On On FR LH OUT SOL Off Off On* USV [FL-RR] Off Off Off HSV [FL-RR] Off Off Off RR RH IN SOL Off On On RR RH OUT SOL Off Off On* USV [FL-RR] Off Off Off HSV [FL-RR] Off Off Off RR LH IN SOL Off On On RR LH OUT SOL Off Off On* USV [FR-RL] Off Off Off HSV [FR-RL] RR LH SOL Off FR LH IN SOL RR RH SOL Down HSV [FR-RL] FR LH SOL Keep FR RH IN SOL FR RH SOL Up Off Off Off C D E BRC G H I *: On for 1 to 2 seconds after the touch, and then Off. NOTE: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an operation for checking. ABS SOLENOID VALVE (ACT) • Touch “Up”, “ACT UP” and “ACT KEEP”. Then use screen monitor to check that solenoid valve operates as shown in the table below. Test item Display item Up ACT UP ACT KEEP Off Off Off FR RH OUT SOL Off Off Off USV [FR-RL] Off On On HSV [FR-RL] Off On* Off FR LH IN SOL Off Off Off FR LH OUT SOL Off Off Off USV [FL-RR] Off On On HSV [FL-RR] FR LH ABS SOLENOID (ACT) Off On* Off RR RH IN SOL Revision: 2008 October Off Off Off RR RH OUT SOL Off Off Off USV [FL-RR] Off On On HSV [FL-RR] RR RH ABS SOLENOID (ACT) K L Display (Note) FR RH IN SOL FR RH ABS SOLENOID (ACT) J Off On* Off BRC-25 2009 370Z M N O P
  26. 26. DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] [VDC/TCS/ABS] < FUNCTION DIAGNOSIS > Test item Display (Note) Display item ACT UP ACT KEEP RR LH IN SOL Off Off Off RR LH OUT SOL RR LH ABS SOLENOID (ACT) Up Off Off Off USV [FR-RL] Off On On HSV [FR-RL] Off On* Off *: On for 1 to 2 seconds after the touch, and then Off. NOTE: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an operation for checking. ABS MOTOR • Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table below. Test item ABS MOTOR Display item Display On Off MOTOR RELAY On Off ACTUATOR RLY (Note) On On NOTE: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an operation for checking. ECU IDENTIFICATION ABS actuator and electric unit (control unit) part number can be read. Revision: 2008 October BRC-26 2009 370Z
  27. 27. C1101, C1102, C1103, C1104 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > COMPONENT DIAGNOSIS A C1101, C1102, C1103, C1104 WHEEL SENSOR Description INFOID:0000000004497255 When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). DTC Logic C INFOID:0000000004497256 DTC DETECTION LOGIC DTC B D Display item Malfunction detected condition C1101 RR RH SENSOR-1 Circuit of rear RH wheel sensor is open. Or when the sensor power voltage is outside the standard. C1102 RR LH SENSOR-1 Circuit of rear LH wheel sensor is open. Or when the sensor power voltage is outside the standard. C1103 FR RH SENSOR-1 Circuit of front RH wheel sensor is open. Or when the sensor power voltage is outside the standard. C1104 FR LH SENSOR-1 Possible cause Circuit of front LH wheel sensor is open. Or when the sensor power voltage is outside the standard. E • Harness or connector • Wheel sensor • ABS actuator and electric unit (control unit) BRC G DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE H 1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1101”, “C1102”, “C1103” or “C1104” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-27, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure I J INFOID:0000000004497257 CAUTION: Never check between wheel sensor harness connector terminals. K 1.CHECK TIRES L Check air pressure, wear and size. Refer to WT-99, "Tire Air Pressure". Is the inspection result normal? YES >> GO TO 2. NO >> Adjust air pressure or replace error-detected parts. M 2.CHECK SENSOR AND SENSOR ROTOR • Check sensor rotor for damage. - Front: refer to BRC-94, "FRONT SENSOR ROTOR : Exploded View". - Rear: refer to BRC-94, "REAR SENSOR ROTOR : Exploded View". • Check wheel sensor for damage, disconnection or looseness. Is the inspection result normal? YES >> GO TO 3. NO >> Repair wheel sensor mount or replace sensor rotor. N O P 3.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect ABS actuator and electric unit (control unit) harness connector. 3. Disconnect wheel sensor harness connector. 4. Check connector and terminal to see if it is deformed, disconnected, looseness, etc. Is the inspection result normal? Revision: 2008 October BRC-27 2009 370Z
  28. 28. C1101, C1102, C1103, C1104 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4.CHECK WHEEL SENSOR HARNESS 1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor harness connector. (Also check continuity when steering wheel is turned right and left and when sensor harness inside the wheel house is moved.) Measurement connector and terminal for power supply circuit ABS actuator and electric unit (control unit) Connector Wheel sensor Connector 9 Terminal 26 E60 (Front LH) 7 B33 (Rear RH) Continuity E27 (Front RH) 6 E41 Terminal B34 (Rear LH) 1 Existed Measurement connector and terminal for signal circuit ABS actuator and electric unit (control unit) Connector Wheel sensor 5 E60 (Front LH) 29 Terminal B33 (Rear RH) Continuity E27 (Front RH) 27 2. Connector 10 E41 Terminal B34 (Rear LH) 2 Existed Check the continuity between ABS actuator and electric unit (control unit) harness connector. ABS actuator and electric unit (control unit) Connector Terminal Connector Terminal E41 1, 4 Continuity 9, 10 E41 26, 5 7, 29 Not existed 6, 27 Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. 5.REPLACE WHEEL SENSOR 1. 2. 3. 4. Replace wheel sensor. Erase ABS actuator and electric unit (control unit) self-diagnosis results. Turn the ignition switch OFF. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1101”, “C1102”, “C1103” or “C1104” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View" NO >> INSPECTION END Special Repair Requirement INFOID:0000000004497259 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" Revision: 2008 October BRC-28 2009 370Z
  29. 29. C1101, C1102, C1103, C1104 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > >> END A B C D E BRC G H I J K L M N O P Revision: 2008 October BRC-29 2009 370Z
  30. 30. C1105, C1106, C1107, C1108 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1105, C1106, C1107, C1108 WHEEL SENSOR Description INFOID:0000000004497260 When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497261 DTC DETECTION LOGIC DTC Display item Malfunction detected condition RR RH SENSOR-2 When the circuit in the rear RH wheel sensor is short-circuited. Or when the distance between the wheel sensor and sensor rotor is too large and the sensor pulse cannot be recognized by the control unit. C1106 RR LH SENSOR-2 When the circuit in the rear LH wheel sensor is short-circuited. Or when the distance between the wheel sensor and sensor rotor is too large and the sensor pulse cannot be recognized by the control unit. C1107 FR RH SENSOR-2 When the circuit in the front RH wheel sensor is short-circuited. Or when the distance between the wheel sensor and sensor rotor is too large and the sensor pulse cannot be recognized by the control unit. FR LH SENSOR-2 Possible cause When the circuit in the front LH wheel sensor is short-circuited. Or when the distance between the wheel sensor and sensor rotor is too large and the sensor pulse cannot be recognized by the control unit. C1105 C1108 • Harness or connector • Wheel sensor • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1105”, “C1106”, “C1107”, or “C1108” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-30, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004513170 CAUTION: Never check between wheel sensor harness connector terminals. 1.CHECK TIRES Check air pressure, wear and size. Refer to WT-99, "Tire Air Pressure". Is the inspection result normal? YES >> GO TO 2. NO >> Adjust air pressure or replace error-detected parts. 2.CHECK SENSOR AND SENSOR ROTOR • Check sensor rotor for damage. - Front: refer to BRC-94, "FRONT SENSOR ROTOR : Exploded View". - Rear: refer to BRC-94, "REAR SENSOR ROTOR : Exploded View". • Check wheel sensor for damage, disconnection or looseness. Is the inspection result normal? YES >> GO TO 3. NO >> Repair wheel sensor mount or replace sensor rotor. 3.CHECK CONNECTOR 1. Turn the ignition switch OFF. Revision: 2008 October BRC-30 2009 370Z
  31. 31. C1105, C1106, C1107, C1108 WHEEL SENSOR < COMPONENT DIAGNOSIS > 2. Disconnect ABS actuator and electric unit (control unit) harness connector. 3. Disconnect wheel sensor harness connector. 4. Check connector and terminal to see if it is deformed, disconnected, looseness, etc. Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. [VDC/TCS/ABS] A B 4.CHECK WHEEL SENSOR HARNESS 1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor harness connector. (Also check continuity when steering wheel is turned right and left and when sensor harness inside the wheel house is moved.) D Measurement connector and terminal for power supply circuit ABS actuator and electric unit (control unit) Connector Wheel sensor Terminal Connector 9 Terminal 26 E60 (Front LH) 7 B33 (Rear RH) Continuity E27 (Front RH) 6 E41 B34 (Rear LH) 1 E Existed Measurement connector and terminal for signal circuit ABS actuator and electric unit (control unit) Connector Connector 5 E60 (Front LH) 29 Terminal B33 (Rear RH) Continuity E27 (Front RH) 27 2. Terminal BRC G Wheel sensor 10 E41 C B34 (Rear LH) H 2 Existed I Check the continuity between ABS actuator and electric unit (control unit) harness connector. J ABS actuator and electric unit (control unit) Connector Terminal Connector Terminal Continuity 9, 10 E41 K 26, 5 E41 7, 29 1, 4 Not existed L 6, 27 Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. M 5.REPLACE WHEEL SENSOR 1. 2. 3. 4. Replace wheel sensor. Erase ABS actuator and electric unit (control unit) self-diagnosis results. Turn the ignition switch OFF. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1105”, “C1106”, “C1107” or “C1108” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View" NO >> INSPECTION END Special Repair Requirement INFOID:0000000004512093 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Revision: 2008 October BRC-31 2009 370Z N O P
  32. 32. C1105, C1106, C1107, C1108 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-32 2009 370Z
  33. 33. C1109 POWER AND GROUND SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1109 POWER AND GROUND SYSTEM A Description INFOID:0000000004497265 Supplies electric power to the ABS actuator and electric unit (control unit). B DTC Logic INFOID:0000000004497266 C DTC DETECTION LOGIC DTC Display item C1109 Malfunction detected condition BATTERY VOLTAGE [ABNORMAL] Possible cause When the ABS actuator and electric unit (control unit) power supply voltage is lower than normal. • Harness or connector • ABS actuator and electric unit (control unit) • IPDM E/R D E DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE BRC 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1109” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-33, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure G INFOID:0000000004497267 H 1.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground. I J ABS actuator and electric unit (control unit) Connector E41 4. Terminal 28 — Condition Voltage Ground Ignition switch: OFF Approx. 0 V K L ABS actuator and electric unit (control unit) 5. Turn the ignition switch ON. CAUTION: Never start the engine. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground. M Connector Terminal E41 28 — Condition Voltage Ground Ignition switch: ON Battery voltage Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT 1. 2. 3. Turn the ignition switch OFF. Disconnect IPDM E/R harness connector. Check continuity between ABS actuator and electric unit (control unit) harness connector and IPDM E/R harness connector. ABS actuator and electric unit (control unit) IPDM E/R Connector Terminal Connector Terminal E41 28 E5 25 Revision: 2008 October BRC-33 Continuity Existed 2009 370Z N O P
  34. 34. C1109 POWER AND GROUND SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-42, "Wiring Diagram IGNITION POWER SUPPLY -". NO >> Repair or replace error-detected parts. 3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector E41 — Continuity Ground Existed Terminal 1 4 Is the inspection result normal? YES >> Replace ABS actuator electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Special Repair Requirement INFOID:0000000004512094 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-34 2009 370Z
  35. 35. C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) DTC Logic A INFOID:0000000004497269 B DTC DETECTION LOGIC DTC Display item Malfunction detected condition C1110 CONTROLLER FAILURE EMERGENCY BRAKE When ABS actuator and electric unit (control unit) is malfunctioning. (Pressure increase is too much or too little) C1170 VARIANT CODING In a case where VARIANT CODING is different. C When there is an internal malfunction in the ABS actuator and electric unit (control unit). C1153 Possible cause ABS actuator and electric unit (control unit) D E DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE BRC 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1110”, “C1153” or “C1170” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-35, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure G INFOID:0000000004497270 H 1.REPLACE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CAUTION: Replace ABS actuator and electric unit (control unit) when self-diagnostic result shows items other than those applicable. I J >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". Special Repair Requirement INFOID:0000000004512095 K 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" L M >> END N O P Revision: 2008 October BRC-35 2009 370Z
  36. 36. C1111 ABS MOTOR, MOTOR RELAY SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1111 ABS MOTOR, MOTOR RELAY SYSTEM Description INFOID:0000000004497272 PUMP The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure. MOTOR The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control unit). MOTOR RELAY Activates or deactivates motor according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497273 DTC DETECTION LOGIC DTC C1111 Display item Malfunction detected condition During the actuator motor operating with ON, when the actuator motor turns OFF, or when the control line for actuator motor relay is open. PUMP MOTOR During the actuator motor operating with OFF, when the actuator motor turns ON, or when the control line for relay is shorted to ground. Possible cause • Harness or connector • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1111” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-36, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004497274 1.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY 1. 2. 3. 4. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check the 50A fuse (H). Check voltage between the ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector Terminal E41 2 — Voltage Ground Battery voltage Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. Revision: 2008 October BRC-36 2009 370Z
  37. 37. C1111 ABS MOTOR, MOTOR RELAY SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > ABS actuator and electric unit (control unit) Connector E41 Terminal 1 4 A — Continuity Ground Existed B Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Special Repair Requirement C INFOID:0000000004512096 D 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" E BRC >> END G H I J K L M N O P Revision: 2008 October BRC-37 2009 370Z
  38. 38. C1114 ACTUATOR RELAY SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1114 ACTUATOR RELAY SYSTEM Description INFOID:0000000004497277 Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497278 DTC DETECTION LOGIC DTC C1114 Display item Malfunction detected condition During the actuator relay operating with OFF, when the actuator relay turns ON, or when the control line for the relay is shorted to the ground. MAIN RELAY During the actuator relay operating with ON, when the actuator relay turns ON, or when the control line for the relay is open. Possible cause • Harness or connector • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1114” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-38, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004497279 1.CHECK ACTUATOR RELAY POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector Terminal E41 3 — Voltage Ground Battery voltage Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2.CHECK ACTUATOR RELAY GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector E41 Terminal 1 4 — Continuity Ground Existed Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Revision: 2008 October BRC-38 2009 370Z
  39. 39. C1114 ACTUATOR RELAY SYSTEM [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Special Repair Requirement INFOID:0000000004512097 A 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" B C >> END D E BRC G H I J K L M N O P Revision: 2008 October BRC-39 2009 370Z
  40. 40. C1115 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1115 WHEEL SENSOR Description INFOID:0000000004497282 When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497283 DTC DETECTION LOGIC DTC C1115 Display item ABS SENSOR [ABNORMAL SIGNAL] Malfunction detected condition When wheel sensor input signal is malfunctioning. Possible cause • Harness or connector • Wheel sensor • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1115” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-40, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004513172 CAUTION: Never check between wheel sensor harness connector terminals. 1.CHECK TIRES Check air pressure, wear and size. Refer to WT-99, "Tire Air Pressure". Is the inspection result normal? YES >> GO TO 2. NO >> Adjust air pressure or replace error-detected parts. 2.CHECK SENSOR AND SENSOR ROTOR • Check sensor rotor for damage. - Front: refer to BRC-94, "FRONT SENSOR ROTOR : Exploded View". - Rear: refer to BRC-94, "REAR SENSOR ROTOR : Exploded View". • Check wheel sensor for damage, disconnection or looseness. Is the inspection result normal? YES >> GO TO 3. NO >> Repair wheel sensor mount or replace sensor rotor. 3.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect ABS actuator and electric unit (control unit) harness connector. 3. Disconnect wheel sensor harness connector. 4. Check connector and terminal to see if it is deformed, disconnected, looseness, etc. Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4.CHECK WHEEL SENSOR HARNESS 1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor harness connector. (Also check continuity when steering wheel is turned right and left and when sensor harness inside the wheel house is moved.) Revision: 2008 October BRC-40 2009 370Z
  41. 41. C1115 WHEEL SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Measurement connector and terminal for power supply circuit ABS actuator and electric unit (control unit) Connector Wheel sensor Connector 9 Terminal 26 E60 (Front LH) 7 B33 (Rear RH) Continuity B34 (Rear LH) A E27 (Front RH) 6 E41 Terminal B 1 Existed C Measurement connector and terminal for signal circuit ABS actuator and electric unit (control unit) Connector Wheel sensor E60 (Front LH) 29 Terminal B33 (Rear RH) Continuity B34 (Rear LH) 2 Existed ABS actuator and electric unit (control unit) Terminal Connector Terminal E41 1, 4 E BRC Check the continuity between ABS actuator and electric unit (control unit) harness connector. Connector D E27 (Front RH) 5 27 2. Connector 10 E41 Terminal Continuity G 9, 10 E41 26, 5 7, 29 Not existed H 6, 27 Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. I 5.REPLACE WHEEL SENSOR J 1. 2. 3. 4. K Replace wheel sensor. Erase ABS actuator and electric unit (control unit) self-diagnosis results. Turn the ignition switch OFF. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1115” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View" NO >> INSPECTION END Special Repair Requirement L M INFOID:0000000004512098 N 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" P >> END Revision: 2008 October O BRC-41 2009 370Z
  42. 42. C1116 STOP LAMP SWITCH [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1116 STOP LAMP SWITCH Description INFOID:0000000004497287 The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497288 DTC DETECTION LOGIC DTC Display item C1116 Malfunction detected condition STOP LAMP SW Possible cause • Harness or connector • Stop lamp switch • ABS actuator and electric unit (control unit) When stop lamp switch circuit is open. DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1116” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-42, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004497289 1.CHECK STOP LAMP SWITCH SIGNAL 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector E41 30 Condition Terminal Voltage Brake pedal is depressed Battery voltage Brake pedal is released Approx. 0 V Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> GO TO 2. 2.CHECK STOP LAMP SWITCH Check stop lamp switch. Refer to BRC-43, "Component Inspection". Is the inspection result normal? YES >> GO TO 3. NO >> Repair stop lamp switch. Refer to BR-18, "Exploded View". 3.CHECK STOP LAMP SWITCH CIRCUIT (1) Check continuity between stop lamp switch harness connector and ABS actuator electric unit (control unit) harness connector. Stop lamp switch ABS actuator electric unit (control unit) Connector Terminal Connector Terminal E110 2 E41 30 Continuity Existed Is the inspection result normal? YES >> GO TO 4. Revision: 2008 October BRC-42 2009 370Z
  43. 43. C1116 STOP LAMP SWITCH [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > NO >> Repair or replace error-detected parts. 4.CHECK STOP LAMP SWITCH CIRCUIT (2) A 1. 2. 3. 4. B Check the 10A fuse (#7). Check continuity between stop lamp switch harness connector and battery positive terminal. Disconnect fuse block connector M1. Check the harness for open between stop lamp switch harness connector and fuse block harness connector. C Stop lamp switch Fuse block Continuity Connector Terminal Connector Terminal E110 1 M1 8F Existed Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-6, "Wiring Diagram - BATTERY POWER SUPPLY -". NO >> Repair or replace error-detected parts. Component Inspection INFOID:0000000004497290 D E BRC 1.CHECK STOP LAMP SWITCH 1. 2. 3. G Turn the ignition switch OFF. Disconnect stop lamp switch harness connector. Check continuity between stop lamp switch harness connector terminals. H Stop lamp switch Terminal 1–2 Condition Continuity Release stop lamp switch (When brake pedal is depressed.) Existed Push stop lamp switch (When brake pedal is released.) I J Not existed Is the inspection result normal? YES >> INSPECTION END NO >> Replace stop lamp switch. Refer to BR-18, "Exploded View". Special Repair Requirement K INFOID:0000000004512099 L 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" M N >> END O P Revision: 2008 October BRC-43 2009 370Z
  44. 44. C1120, C1122, C1124, C1126 IN ABS SOL [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1120, C1122, C1124, C1126 IN ABS SOL Description INFOID:0000000004497292 The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497293 DTC DETECTION LOGIC DTC Display item Malfunction detected condition C1120 FR LH IN ABS SOL When the control unit detects a malfunction in the front LH inlet solenoid circuit. C1122 FR RH IN ABS SOL When the control unit detects a malfunction in the front RH inlet solenoid circuit. C1124 RR LH IN ABS SOL When the control unit detects a malfunction in the rear LH inlet solenoid circuit. C1126 RR RH IN ABS SOL Possible cause When the control unit detects a malfunction in the rear RH inlet solenoid circuit. ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1120”, “C1122”, “C1124” or “C1126” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-44, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004515372 1.CHECK SOLENOID POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector Terminal E41 3 — Voltage Ground Battery voltage Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2.CHECK SOLENOID GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector E41 Terminal 1 4 — Continuity Ground Existed Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Revision: 2008 October BRC-44 2009 370Z
  45. 45. C1120, C1122, C1124, C1126 IN ABS SOL [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Special Repair Requirement INFOID:0000000004535409 A 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" B C >> END D E BRC G H I J K L M N O P Revision: 2008 October BRC-45 2009 370Z
  46. 46. C1121, C1123, C1125, C1127 OUT ABS SOL [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1121, C1123, C1125, C1127 OUT ABS SOL Description INFOID:0000000004497297 The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic INFOID:0000000004497298 DTC DETECTION LOGIC DTC Display item Malfunction detected condition C1121 FR LH OUT ABS SOL When the control unit detects a malfunction in the front LH outlet solenoid circuit. C1123 FR RH OUT ABS SOL When the control unit detects a malfunction in the front RH outlet solenoid circuit. C1125 RR LH OUT ABS SOL When the control unit detects a malfunction in the rear LH outlet solenoid circuit. C1127 RR RH OUT ABS SOL Possible cause When the control unit detects a malfunction in the rear RH outlet solenoid circuit. • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1121”, “C1123”, “C1125 ” or “C1127” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-46, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004535488 1.CHECK SOLENOID POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector Terminal E41 3 — Voltage Ground Battery voltage Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2.CHECK SOLENOID GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector E41 Terminal 1 4 — Continuity Ground Existed Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Revision: 2008 October BRC-46 2009 370Z
  47. 47. C1121, C1123, C1125, C1127 OUT ABS SOL [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Special Repair Requirement INFOID:0000000004512100 A 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" B C >> END D E BRC G H I J K L M N O P Revision: 2008 October BRC-47 2009 370Z
  48. 48. C1130 ENGINE SIGNAL [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1130 ENGINE SIGNAL Description INFOID:0000000004497302 ABS actuator and electric unit (control unit) and ECM exchange the engine signal with CAN communication line. DTC Logic INFOID:0000000004497303 DTC DETECTION LOGIC DTC C1130 Display item ENGINE SIGNAL 1 Malfunction detected condition Major engine components are malfunctioning. Possible cause • Harness or connector • ABS actuator and electric unit (control unit) • ECM • CAN communication line DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1130” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-48, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004497304 1.PERFORM ECM SELF-DIAGNOSIS Perform ECM self-diagnosis. Is any DTC detected? YES >> Check the DTC. NO >> GO TO 2. 2.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS 1. Erase ABS actuator and electric unit (control unit) self-diagnosis results. 2. Turn the ignition switch OFF. 3. Start the engine. Drive the vehicle for a while. 4. Make sure that malfunction indicator lamp (MIL) turns OFF. 5. Stop the engine. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1130” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Check ABS actuator and electric unit (control unit) harness connector terminals for damage or loose connection with harness connector. If any items and damaged, repair or replace errordetected parts. Special Repair Requirement INFOID:0000000004512800 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-48 2009 370Z
  49. 49. C1142 PRESS SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1142 PRESS SENSOR A Description INFOID:0000000004497310 The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator and electric unit (control unit). [The pressure sensor is integrated in the ABS actuator and electric unit (control unit).] B DTC Logic C INFOID:0000000004497311 DTC DETECTION LOGIC D DTC C1142 Display item PRESS SEN CIRCUIT Malfunction detected condition Possible cause Pressure sensor signal line is open or shorted, or pressure sensor is malfunctioning. • Harness or connector • Stop lamp switch • ABS actuator and electric unit (control unit) DTC CONFIRMATION PROCEDURE E BRC 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1142” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-49, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure G H INFOID:0000000004497312 I 1.CHECK STOP LAMP SWITCH Check stop lamp switch. Refer to BRC-43, "Component Inspection". Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. J K 2.CHECK BRAKE SYSTEM 1. 2. 3. 4. 5. 6. Check brake fluid leakage: refer to BR-10, "Inspection". Check brake piping: refer to BR-24, "FRONT : Inspection" (front), BR-28, "REAR : Inspection" (rear). Check brake pedal: refer to BR-7, "Inspection and Adjustment". Check master cylinder: refer to BR-12, "Inspection". Check brake booster: refer to BR-13, "Inspection". Check front disc brake: refer to BR-44, "BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Inspection" (2 piston type), BR-48, "BRAKE CALIPER ASSEMBLY (4 PISTON TYPE) : Inspection" (4 piston type). 7. Check rear disc brake: refer to BR-58, "BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Inspection" (1 piston type), BR-62, "BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Inspection" (2 piston type). Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3.PERFORM SELF-DIAGNOSIS Perform ABS actuator and electric unit (control unit) self-diagnosis. Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Check ABS actuator and electric unit (control unit) harness connector terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace errordetected parts. Revision: 2008 October BRC-49 2009 370Z L M N O P
  50. 50. C1142 PRESS SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Special Repair Requirement INFOID:0000000004512802 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-50 2009 370Z
  51. 51. C1143 STEERING ANGLE SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1143 STEERING ANGLE SENSOR A Description INFOID:0000000004497315 The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication. DTC Logic B INFOID:0000000004497316 C DTC DETECTION LOGIC DTC C1143 Display item Malfunction detected condition ST ANG SEN CIRCUIT Steering angle sensor is malfunctioning. Possible cause • Harness or connector • Steering angle sensor • ABS actuator and electric unit (control unit) D E DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE BRC 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1143” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-51, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure G H INFOID:0000000004497317 1.CHECK STEERING ANGLE SENSOR POWER SUPPLY I 1. 2. 3. J Turn the ignition switch OFF. Disconnect steering angle sensor harness connector. Check the voltage between steering angle sensor harness connector and ground. Steering angle sensor Connector M37 4. 5. Terminal 8 — Condition Voltage Ground Ignition switch: OFF Approx. 0 V K Turn the ignition switch ON. CAUTION: Never start the engine. Check the voltage between steering angle sensor harness connector and ground. Steering angle sensor Connector Terminal M37 8 — Condition Ignition switch: ON M Voltage Ground L Battery voltage N Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. O 2.CHECK STEERING ANGLE SENSOR CIRCUIT 1. 2. 3. Turn the ignition switch OFF. Disconnect IPDM E/R harness connector. Check continuity between steering angle sensor harness connector and IPDM E/R harness connector. Revision: 2008 October BRC-51 2009 370Z P
  52. 52. C1143 STEERING ANGLE SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Steering angle sensor IPDM E/R Connector Terminal Connector Terminal M37 8 E5 25 Continuity Existed Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-42, "Wiring Diagram IGNITION POWER SUPPLY -" NO >> Repair or replace error-detected parts. 3.CHECK STEERING ANGLE SENSOR GROUND Check continuity between steering angle sensor harness connector and ground. Steering angle sensor Connector Terminal M37 7 — Continuity Ground Existed Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4.CHECK DATA LINE Check “STRG BRANCH LINE CIRCUIT”. Refer to LAN-53, "Diagnosis Procedure". Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Refer to BRC-90, "Precautions for Harness Repair". Special Repair Requirement INFOID:0000000004513176 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-52 2009 370Z
  53. 53. C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT DTC Logic A INFOID:0000000004512950 DTC DETECTION LOGIC DTC C1144 B Display item ST ANG SEN SIGNAL Malfunction detected condition Possible cause Neutral position of steering angle sensor is not finished. • Harness or connector • Steering angle sensor • ABS actuator and electric unit (control unit) C D DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE E Turn the ignition switch ON. Select “ST ANG SEN ADJUSTMENT” in “WORK SUPPORT”, and perform adjust the neutral position of steering angle sensor. BRC 3. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1144” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-53, "Diagnosis Procedure". G NO >> INSPECTION END 1. 2. Diagnosis Procedure INFOID:0000000004512951 H 1.CHECK STEERING ANGLE SENSOR Check steering angle sensor. Refer to BRC-51, "Diagnosis Procedure". Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). NO >> Repair or replace error-detected parts. I J Special Repair Requirement INFOID:0000000004513174 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION K Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" L >> END M N O P Revision: 2008 October BRC-53 2009 370Z
  54. 54. C1145, C1146 YAW RATE/SIDE G SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1145, C1146 YAW RATE/SIDE G SENSOR Description INFOID:0000000004497320 The yaw rate/side G sensor detects the yaw rate/side G affecting the vehicle, and transmits the data to the ABS actuator and electric unit (control unit) as an analog voltage signal. DTC Logic INFOID:0000000004497321 DTC DETECTION LOGIC DTC Display item Malfunction detected condition Possible cause • Harness or connector • ABS actuator and electric unit (control unit) • Yaw rate/side G sensor C1145 YAW RATE SENSOR Yaw rate sensor is malfunctioning, or the yaw rate sensor signal line is open or shorted. C1146 SIDE G-SEN CIRCUIT Side G sensor is malfunctioning, or circuit of side G sensor is open or shorted. DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1145” or “C1146” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-54, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure INFOID:0000000004497322 CAUTION: • Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC OFF switch “ON”) may cause yaw rate/side G sensor system to indicate a malfunction. However, this is not a malfunction, if normal operation can be resumed after restarting engine. Then erase memory of self-diagnosis. • If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF indicator lamp may illuminate and CONSULT-III self-diagnosis may indicate yaw rate sensor system malfunction. However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off of turn-table or other moving surface, and start the engine. Results will return to normal. INSPECTION PROCEDURE 1.CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect yaw rate/side G sensor harness connector. Check voltage between yaw rate/side G sensor harness connector and ground. Yaw rate/side G sensor Connector M143 4. 5. Terminal 4 — Condition Voltage Ground Ignition switch: OFF Approx. 0 V Turn the ignition switch ON. CAUTION: Never start the engine. Check voltage between yaw rate/side G sensor harness connector and ground. Yaw rate/side G sensor Connector Terminal M143 4 — Condition Voltage Ground Ignition switch: ON Battery voltage Is the inspection result normal? YES >> GO TO 3. Revision: 2008 October BRC-54 2009 370Z
  55. 55. C1145, C1146 YAW RATE/SIDE G SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > NO >> GO TO 2. 2.CHECK YAW RATE/SIDE G SENSOR CIRCUIT 1. 2. 3. A Turn the ignition switch OFF. Disconnect IPDM E/R harness connector. Check continuity between yaw rate/side G sensor harness connector and IPDM E/R harness connector. Yaw rate/side G sensor IPDM E/R Connector Terminal Connector Terminal M143 4 E5 25 Continuity B C Existed Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-42, "Wiring Diagram IGNITION POWER SUPPLY -". NO >> Repair or replace error-detected parts. 3.CHECK YAW RATE/SIDE G SENSOR GROUND D E Check continuity between yaw rate/side G sensor harness connector and ground. BRC Yaw rate/side G sensor 1 Continuity Existed Terminal M143 — Ground Connector G Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. H 4.CHECK YAW RATE/SIDE G SENSOR CIRCUIT Check continuity between yaw rate/side G sensor harness connector and ABS actuator electric unit (control unit) harness connector. Yaw rate/side G sensor Connector M143 ABS actuator electric unit (control unit) Terminal Connector 2 Terminal E41 3 25 45 J Continuity Existed Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. 1. 2. 3. 4. Replace yaw rate/side G sensor. Refer to BRC-97, "Exploded View". Erase ABS actuator and electric unit (control unit) self-diagnosis results. Turn the ignition switch OFF. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1145” or “C1146” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> INSPECTION END INFOID:0000000004512803 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" Revision: 2008 October BRC-55 K L 5.REPLACE YAW RATE/SIDE G SENSOR Special Repair Requirement I 2009 370Z M N O P
  56. 56. C1145, C1146 YAW RATE/SIDE G SENSOR [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > >> END Revision: 2008 October BRC-56 2009 370Z
  57. 57. C1147, C1148, C1149, C1150 USV/HSV LINE [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1147, C1148, C1149, C1150 USV/HSV LINE A Description INFOID:0000000004497325 USV1, USV2 (CUT VALVE) B The cut valve shuts off the normal brake fluid path from the master cylinder, when VDC/TCS is activated. HSV1, HSV2 (SUCTION VALVE) The suction valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated. DTC Logic C INFOID:0000000004497326 D DTC DETECTION LOGIC DTC Display item Malfunction detected condition USV LINE [FL-RR] VDC switch-over solenoid valve (USV1) on the primary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground. USV LINE [FR-RL] VDC switch-over solenoid valve (USV2) on the primary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground. C1149 HSV LINE [FL-RR] VDC switch-over solenoid valve (HSV1) on the primary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground. C1150 HSV LINE [FR-RL] Possible cause VDC switch-over solenoid valve (HSV2) on the primary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground. C1147 C1148 E BRC • Harness or connector • ABS actuator and electric unit (control unit) G H I DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1147”, “C1148”, “C1149” or “C1150” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-57, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure J K INFOID:0000000004516999 L 1.CHECK ACTUATOR RELAY POWER SUPPLY 1. 2. 3. Turn the ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) harness connector. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground. ABS actuator and electric unit (control unit) Connector Terminal E41 3 N — Voltage Ground Battery voltage O Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. P 2.CHECK ACTUATOR RELAY GROUND Check continuity between ABS actuator and electric unit (control unit) harness connector and ground. Revision: 2008 October M BRC-57 2009 370Z
  58. 58. C1147, C1148, C1149, C1150 USV/HSV LINE [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > ABS actuator and electric unit (control unit) Connector E41 Terminal 1 4 — Continuity Ground Existed Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-95, "Exploded View". NO >> Repair or replace error-detected parts. Special Repair Requirement INFOID:0000000004512805 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-58 2009 370Z
  59. 59. C1155 BRAKE FLUID LEVEL SWITCH [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > C1155 BRAKE FLUID LEVEL SWITCH A Description INFOID:0000000004497330 The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actuator and electric unit (control unit). DTC Logic B INFOID:0000000004497331 C DTC DETECTION LOGIC DTC Display item C1155 Malfunction detected condition Brake fluid level is low or communication line between the ABS actuator and electric unit (control unit) and brake fluid level switch is open or shorted. BR FLUID LEVEL LOW Possible cause • Harness or connector • Brake fluid level switch • Combination meter D E DTC CONFIRMATION PROCEDURE 1.DTC REPRODUCTION PROCEDURE BRC 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1155” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-59, "Diagnosis Procedure". NO >> INSPECTION END Diagnosis Procedure G INFOID:0000000004497332 H 1.PERFORM COMBINATION METER SELF-DIAGNOSIS Perform combination meter self-diagnosis. Refer to MWI-33, "CONSULT-III Function (METER/M&A)". Is any DTC detected? YES >> Check the DTC. NO >> GO TO 2. I J 2.CHECK THE BRAKE FLUID LEVEL K Check the brake fluid level. Refer to BR-10, "Inspection". Is the inspection result normal? YES >> GO TO 3. NO >> Refill the brake fluid. Refer to BR-10, "Refilling". L 3.CHECK BRAKE FLUID LEVEL SWITCH CIRCUIT Check continuity between brake fluid level switch harness connector and combination meter harness connector. Combination meter Brake fluid level switch Connector Terminal Connector Terminal M53 27 E47 1 M N Continuity Existed O Brake fluid level switch Connector Terminal E47 1 Brake fluid level switch Connector Terminal E47 2 Revision: 2008 October — Continuity Ground Not existed — Continuity Ground Existed P BRC-59 2009 370Z
  60. 60. C1155 BRAKE FLUID LEVEL SWITCH [VDC/TCS/ABS] < COMPONENT DIAGNOSIS > Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4.CHECK BRAKE FLUID LEVEL SWITCH Check brake fluid level switch. Refer to BRC-60, "Component Inspection". Is the inspection result normal? YES >> Check combination meter. Refer to MWI-32, "Diagnosis Description". NO >> Replace reservoir tank. Refer to BR-29, "Exploded View". Component Inspection INFOID:0000000004497333 1.CHECK BRAKE FLUID LEVEL SWITCH 1. 2. 3. Turn the ignition switch OFF. Disconnect brake fluid level switch harness connector. Check continuity between brake fluid level switch harness connector. Brake fluid level switch Condition Terminal 1−2 Continuity When brake fluid is full in the reservoir tank. When brake fluid is empty in the reservoir tank. Not existed Existed Is the inspection result normal? YES >> INSPECTION END NO >> Replace reservoir tank. Refer to BR-29, "Exploded View". Special Repair Requirement INFOID:0000000004512806 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement" >> END Revision: 2008 October BRC-60 2009 370Z

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