The document outlines various components and features of the body electrical system in Hyundai vehicles, including communication protocols like CAN and LIN, and the functionalities of the body control module (BCM) such as rear wiper control and alarm systems. It emphasizes the control mechanisms for features like automatic door locking, crash unlock control, and the operation of the rear parking assist system. The content is protected by copyright, prohibiting reproduction or distribution without permission from Hyundai Motor Company.

1. Body Electrical
LM SJB
LM SJB
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.

2. 2
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Body electrical communication (CAN)
Cluster Module
SJB
PDM
BCM
SMK
ECU
K-Line
K-Line
Power train CAN
(EMS,VDC..)

3. 3
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Body electrical communication (LIN)
Instrument Panel
BCM
(LIN Master)
RPAS
Digital Sensor
External Buzzer
CAN LIN
Built-in buzzer

4. 4
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Components (BCM)
 Main Features
1. CAN communication with SJB / Built-in RPAS module
2. Built-in RKE receiver (External receiver antenna)
3. Buzzer installed inside BCM
Connector
At the rear of the center fascia panel

5. 5
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Main BCM Control Features - New Features and Changes Only
Rear Intermittent Wiper Control (INT)
1) Detailed Input/Output
Classification Input/Output Type Detail
BCM Input Digital signals
IGN2
Rear wiper int. switch
BCM Output CAN output: BCM  SJB Rear wiper relay (Output from SJB)
T2
T1
Rear wiper
Relay
OFF
ON
Rear wiper
int. switch
(IGN2 ON)
OFF
ON
T1
T1:0.7s T2 : 5.3s

6. 6
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Main BCM Control Features - New Features and Changes Only
Internal Buzzer Control
Classification Input/Output Type Detail
BCM Input
Digital signals IGN1
CAN signal: CLUM → BCM
Tail light ON
Rheostat max/min brightness change signal
BCM Output Digital output Buzzer in BCM in operation for 0.4 s
1) Detailed Input/Output
2) Description of Detailed Features
OFF Buzzer Operation
Interior light OFF/IGN1 OFF
 Internal buzzer output OFF
(Interior light ON/IGN1 ON) & (Rheostat max/min brightness change: OFF  ON)
 Internal buzzer output ON - Operation started at 0.4 s cycle

7. 7
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
1) Detailed Input/Output
2) Others
Classification Input/Output Type Detail
BCM Input
Digital signals
IGN1
Key In switch
CAN signal: SJB → BCM Four door switch state signal
BCM Output Digital output Photosensitive room lamp output for 30 s
① After the battery removal and installation, if IGN1 is on and four door switch is on (open), the room
lamp is switched on.
② After the battery removal and installation, if IGN1 is off and four door switch is on (open), the
maximum operation time of the room lamp is 20 minutes.
Main BCM Control Features - New Features and Changes Only
Decayed Room Lamp Control

8. 8
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Main BCM Control Features - New Features and Changes Only
Crash Unlock Control
1) Detailed Input/Output
Classification Input/Output Type Detail
BCM Input
Digital signals IGN1
PWM signal: From ACU Crash signal
BCM Output Digital output Door unlock relay
2) Description of Detailed Features
① ON/OFF judgment condition for the collision input signal
T2
(Crash Input)
HIGH
LOW
T1
T1: 16±2 msec , T2: 4±2 msec
OFF(Before crash) ON (After crash)
T2
T1

9. 9
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
1) Control Condition
① When the remote unlock, smart key unlock or passive unlock signals are received, the door unlock
state signal is transmitted to the AV system 8 times.
2) Time chart
T2
T1
Not received
Received
Remote or
Passive
Unlock Signal
BCM  AV
T1,T2 : 60ms±ms
Main BCM Control Features - New Features and Changes Only
AV Unlock Signal Control (Door Unlock Signal)

10. 10
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Head lamp LOW switch H LP
TAIL
HI
Tail lamp switch
Head lamp HIGH switch
Multifunction Switch
Head lamp LOW control output
Autolight switch AUTO
PASSING
Front fog lamp switch FRT FOG
Rear fog lamp switch RR FOG
BCM
Main BCM Control Features - New Features and Changes Only
Head Lamp Control

11. 11
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
No. Item Feature Applicable Mode Default Value
1 Automatic door lock
This function locks all doors when a specific
velocity is reached.
DISABLE
15㎞/h ○
2 Automatic door unlock
This function automatically unlocks all doors for
a specific condition.
DISABLE
KEY OFF(OUT) ○
Gear lever shift
3
Automatic door lock
(Gear lever shift)
This function locks all doors when the
transmission lever is shifted from P position to
another position.
DISABLE ○
ENABLE
4
Automatic door unlock
(Driver's seat knob linked)
This function automatically unlocks all doors in
the case of unlock using the driver's seat knob
when all doors are locked.
DISABLE ○
ENABLE
5 Horn answer back
This function operates the burglar horn in the
case of the entry to the remote alarm state.
DISABLE
○
(SMK
Specification)
ENABLE
○
(RKE
Specification)
6
Alarm state
activation/deactivation by
key
Alarm activation/deactivation in the case of lock
or unlock using a mechanical key
DISABLE ○
ENABLE
7 Auto light control
This function automatically switches on the tail
light and head lamp according to the input values
of the illuminance sensor.
DISABLE X
ENABLE ○
BCM User Option Control

12. 12
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Components (smart key ECU)
Smart Key (SMK) ECU
At the right side of the blower motor

13. 13
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Components (PDM)
Power Distribution Module
(PDM)

14. 14
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Bracket (Left)
Bracket (Upper)
Lower Cover
Mini Fuse
Memory Fuse
Upper Housing
PCB Ass’y
Lower Housing
Components (SJB)
LM SJB
LM SJB
SJB Module

15. 16
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Components (Cluster)
 Main Features
1. Control of the warning lamps on the instrument panel
(Direct control & CAN signal input control)
2. Trip computer control
3. Cluster text alarm display control (Applied from Feb. 2010)
4. Gate for the body electronic CAN & power-train CAN
※ Supervision cluster expected to be applied from Feb. 2010

16. 17
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
Components (RPASM : Rear Parking Assist System Module)
Sensor 1
(RL)
Sensor 2
(RCL)
Sensor 3
(RCR)
Sensor 4
(RR)
※ Sensor beam width: 100˚ horizontal and 40˚ vertical
(for a single sensor)
1 6
 Main Features
1.Transmission of the data on the distance to the obstacle upon the distance
measurement request of the BCM (As a slave module)
2. Transmission of fault data to the BCM
3. IGN ON, R gear engagement and distance measurement request of BCM
(master module)  LIN communication started

17. 18
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
ESS (Emergency Stop Signal)
: C-CAN
: B-CAN
: Hard-wire
B+
BLS
ESS Relay (NC)
IGN
BS
ABS
ESC
Hazard
Switch
BCM
Gateway
(Cluster)
• Hazard Switch
-ON
-OFF
“ON/OFF”
signal
Lamp Control
(Blinking)
Relay State Monitoring
• Hazard Switch
-ON
-OFF
STOP Lamp
(include High-Mount-Stop-Lamp)
Direction Ind. Lamp
• ESS function
-Inactive
-Active
-Defective
• ESS function
-Inactive
-Active Lamp Control
(Blinking)
※ Applicable region (Time): Korea (Aug. 2009) / Europe (Feb. 2010)

18. 21
Body Electrical
Copyright ⓒ 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company.
RPAS (Rear Parking Assist System)
40CM
80CM
120CM
RL RCL RCR RR
Horizontal Detection Range Vertical Detection Range