Ec

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Ec

  1. 1. ENGINE CONTROL SYSTEM B ENGINE SECTION EC ENGINE CONTROL SYSTEM A EC C D CONTENTS APPLICATION NOTICE ........................................... 18 . How to Check Vehicle Type .................................. 18 . QG (WITH EURO-OBD) INDEX FOR DTC ..................................................... 19 . Alphabetical Index ................................................. 19 . DTC No. Index ...................................................... 21 . PRECAUTIONS ....................................................... 24 . Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” ............................................................... 24 . On Board Diagnostic (OBD) System of Engine and A/T ......................................................................... 24 . Precaution ............................................................. 24 . Wiring Diagrams and Trouble Diagnosis ............... 27 . PREPARATION ........................................................ 28 . Special Service Tools ............................................ 28 . Commercial Service Tools ..................................... 28 . ENGINE CONTROL SYSTEM ................................. 30 . System Diagram .................................................... 30 . Vacuum Hose Drawing .......................................... 31 . System Chart ........................................................ 32 . Multiport Fuel Injection (MFI) System ................... 32 . Electronic Ignition (EI) System .............................. 35 . Air Conditioning Cut Control .................................. 35 . Fuel Cut Control (at No Load and High Engine Speed) ................................................................... 36 . CAN Communication ............................................. 36 . BASIC SERVICE PROCEDURE ............................. 44 . Idle Speed and Ignition Timing Check ................... 44 . Accelerator Pedal Released Position Learning ..... 45 . Throttle Valve Closed Position Learning ............... 45 . Idle Air Volume Learning ....................................... 45 . Fuel Pressure Check ............................................. 48 . ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 50 . Introduction ........................................................... 50 . Two Trip Detection Logic ....................................... 50 . Emission-related Diagnostic Information ............... 51 . NATS (Nissan Anti-theft System) .......................... 63 . Malfunction Indicator (MI) ...................................... 63 . OBD System Operation Chart ............................... 66 . TROUBLE DIAGNOSIS ........................................... 72 . Trouble Diagnosis Introduction .............................. 72 . DTC Inspection Priority Chart ................................ 76 . Fail-safe Chart ....................................................... 77 . Basic Inspection .................................................... 79 . Symptom Matrix Chart ........................................... 84 . Engine Control Component Parts Location ........... 88 . Circuit Diagram ...................................................... 92 . ECM Harness Connector Terminal Layout ............ 94 . ECM Terminals and Reference Value .................... 94 . CONSULT-II Function .......................................... 101 . Generic Scan Tool (GST) Function .......................111 . CONSULT-IIReferenceValueinDataMonitorMode . 113 Major Sensor Reference Graph in Data Monitor Mode .................................................................... 116 . TROUBLE DIAGNOSIS - SPECIFICATION VALUE 118 . Description ........................................................... 118 . Testing Condition ................................................. 118 . Inspection Procedure ........................................... 118 . Diagnostic Procedure .......................................... 119 . TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ...................................................................... 122 . Description ........................................................... 122 . Diagnostic Procedure .......................................... 122 . POWER SUPPLY CIRCUIT FOR ECM .................. 123 . Wiring Diagram .................................................... 123 . Diagnostic Procedure .......................................... 124 . Component Inspection ......................................... 128 . DTC U1000, U1001 CAN COMMUNICATION LINE. 129 Description ........................................................... 129 . On Board Diagnosis Logic ................................... 129 . DTC Confirmation Procedure .............................. 129 . Wiring Diagram .................................................... 130 . Diagnostic Procedure .......................................... 131 . DTC P0011 IVT CONTROL .................................... 132 . Description ........................................................... 132 . CONSULT-IIReferenceValueinDataMonitorMode EC-1 E F G H I J K L M
  2. 2. . 132 On Board Diagnosis Logic ................................... 133 . DTC Confirmation Procedure .............................. 133 . Diagnostic Procedure .......................................... 134 . DTC P0031, P0032 HO2S1 HEATER .................... 135 . Description ........................................................... 135 . CONSULT-IIReferenceValueinDataMonitorMode . 135 On Board Diagnosis Logic ................................... 135 . DTC Confirmation Procedure .............................. 135 . Wiring Diagram .................................................... 137 . Diagnostic Procedure .......................................... 138 . Component Inspection ......................................... 140 . Removal and Installation ..................................... 140 . DTC P0037, P0038 HO2S2 HEATER .................... 141 . Description ........................................................... 141 . CONSULT-IIReferenceValueinDataMonitorMode . 141 On Board Diagnosis Logic ................................... 141 . DTC Confirmation Procedure .............................. 141 . Wiring Diagram .................................................... 143 . Diagnostic Procedure .......................................... 144 . Component Inspection ......................................... 146 . Removal and Installation ..................................... 146 . DTC P0102, P0103 MAF SENSOR ........................ 147 . Component Description ....................................... 147 . CONSULT-IIReferenceValueinDataMonitorMode . 147 On Board Diagnosis Logic ................................... 147 . DTC Confirmation Procedure .............................. 148 . Wiring Diagram .................................................... 149 . Diagnostic Procedure .......................................... 150 . Component Inspection ......................................... 152 . Removal and Installation ..................................... 152 . DTC P0112, P0113 IAT SENSOR .......................... 153 . Component Description ....................................... 153 . On Board Diagnosis Logic ................................... 153 . DTC Confirmation Procedure .............................. 153 . Wiring Diagram .................................................... 154 . Diagnostic Procedure .......................................... 155 . Component Inspection ......................................... 156 . Removal and Installation ..................................... 156 . DTC P0117, P0118 ECT SENSOR ......................... 157 . Component Description ....................................... 157 . On Board Diagnosis Logic ................................... 157 . DTC Confirmation Procedure .............................. 158 . Wiring Diagram .................................................... 159 . Diagnostic Procedure .......................................... 160 . Component Inspection ......................................... 161 . Removal and Installation ..................................... 161 . DTC P0132 HO2S1 ................................................ 162 . Component Description ....................................... 162 . CONSULT-IIReferenceValueinDataMonitorMode . 162 On Board Diagnosis Logic ................................... 162 . DTC Confirmation Procedure .............................. 163 . Wiring Diagram .................................................... 164 . Diagnostic Procedure .......................................... 165 . Component Inspection .........................................166 . Removal and Installation ...................................... 167 . DTC P0133 HO2S1 ................................................ 168 . Component Description ....................................... 168 . CONSULT-IIReferenceValueinDataMonitorMode .168 On Board Diagnosis Logic ................................... 168 . DTC Confirmation Procedure ............................... 169 . Overall Function Check ........................................ 170 . Wiring Diagram .................................................... 171 . Diagnostic Procedure ........................................... 172 . Component Inspection .........................................175 . Removal and Installation ...................................... 177 . DTC P0134 HO2S1 ................................................ 178 . Component Description ....................................... 178 . CONSULT-IIReferenceValueinDataMonitorMode .178 On Board Diagnosis Logic ................................... 178 . DTC Confirmation Procedure ............................... 179 . Overall Function Check ........................................ 179 . Wiring Diagram .................................................... 181 . Diagnostic Procedure ........................................... 182 . Component Inspection .........................................183 . Removal and Installation ...................................... 184 . DTC P0138 HO2S2 ................................................ 185 . Component Description ....................................... 185 . CONSULT-IIReferenceValueinDataMonitorMode .185 On Board Diagnosis Logic ................................... 185 . DTC Confirmation Procedure ............................... 186 . Wiring Diagram .................................................... 187 . Diagnostic Procedure ..................