Infiniti G37 Coupe. Manual — part 221

BCS-2

AIR PRESSURE MONITOR . . . . . . . . . ..

29

AIR PRESSURE MONITOR : Diagnosis Descrip-
tion . . . . . . . . . . . . . . . . . . ..

30

AIR PRESSURE MONITOR : CONSULT-III Func-
tion (BCM - AIR PRESSURE MONITOR) . . . ...

31

COMPONENT DIAGNOSIS . . . . . .

33

U1000 CAN COMM CIRCUIT . . . . . . .

33

Description . . . . . . . . . . . . . . . ..

33

DTC Logic . . . . . . . . . . . . . . . ...

33

Diagnosis Procedure . . . . . . . . . . . ..

33

U1010 CONTROL UNIT (CAN) . . . . . . .

34

DTC Logic . . . . . . . . . . . . . . . ...

34

Diagnosis Procedure . . . . . . . . . . . ..

34

Special Repair Requirement . . . . . . . . ...

34

U0415 VEHICLE SPEED SIG . . . . . . .

35

Description . . . . . . . . . . . . . . . ..

35

DTC Logic . . . . . . . . . . . . . . . ...

35

Diagnosis Procedure . . . . . . . . . . . ..

35

B2562 LOW VOLTAGE . . . . . . . . . .

36

DTC Logic . . . . . . . . . . . . . . . ...

36

Diagnosis Procedure . . . . . . . . . . . ..

36

Special Repair Requirement . . . . . . . . ...

36

B2563 HI VOLTAGE . . . . . . . . . . ..

37

DTC Logic . . . . . . . . . . . . . . . ...

37

Diagnosis Procedure . . . . . . . . . . . ..

37

Special Repair Requirement . . . . . . . . ...

37

POWER SUPPLY AND GROUND CIRCUIT . .

38

Diagnosis Procedure . . . . . . . . . . . ..

38

COMBINATION SWITCH INPUT CIRCUIT . ...

39

Diagnosis Procedure . . . . . . . . . . . ..

39

Special Repair Requirement . . . . . . . . ...

40

COMBINATION SWITCH OUTPUT CIRCUIT ...

41

Diagnosis Procedure . . . . . . . . . . . ...

41

Special Repair Requirement . . . . . . . . ...

42

ECU DIAGNOSIS . . . . . . . . . ...

43

BCM (BODY CONTROL MODULE) . . . . ..

43

Reference Value . . . . . . . . . . . . . .

43

Wiring Diagram - BCM - . . . . . . . . . . ..

66

Fail Safe . . . . . . . . . . . . . . . . .

71

DTC Inspection Priority Chart . . . . . . . ...

73

DTC Index . . . . . . . . . . . . . . . ..

75

SYMPTOM DIAGNOSIS . . . . . . .

77

COMBINATION SWITCH SYSTEM SYMP-
TOMS . . . . . . . . . . . . . . . . .

77

Symptom Table . . . . . . . . . . . . . ...

77

PRECAUTION . . . . . . . . . . .

78

PRECAUTIONS . . . . . . . . . . . . .

78

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . . .

78

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect . . . . . . . . ...

78

Precaution for Battery Service . . . . . . . .

78

ON-VEHICLE REPAIR . . . . . . . ...

79

BCM (BODY CONTROL MODULE) . . . . ..

79

Exploded View . . . . . . . . . . . . . .

79

Removal and Installation . . . . . . . . . . .

79

COMBINATION SWITCH . . . . . . . . ..

80

Exploded View . . . . . . . . . . . . . .

80

Removal and Installation . . . . . . . . . . .

80

BCS

BODY CONTROL SYSTEM

BCS-3

< FUNCTION DIAGNOSIS >

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FUNCTION DIAGNOSIS

BODY CONTROL SYSTEM

System Description

INFOID:0000000001612370

OUTLINE

• BCM (Body Control Module) controls the various electrical components. It inputs the information required to

the control from CAN communication and the signal received from each switch and sensor.

• BCM has combination switch reading function for reading the operation status of combination switches (light,

turn signal, wiper and washer) in addition to a function for controlling the operation of various electrical com-
ponents. It also has the signal transmission function as the passed point of signal and the power saving con-
trol function that reduces the power consumption with the ignition switch OFF.

• BCM is equipped with the diagnosis function that performs the diagnosis with CONSULT-III and various set-

tings.

BCM control function list

System

Refer to

Combination switch reading system

BCS-5, "System Diagram"

Signal buffer system

BCS-9, "System Diagram"

Power consumption control system

BCS-10, "System Diagram"

Auto light system

EXL-12, "System Diagram"

Turn signal and hazard warning lamp system

EXL-24, "System Diagram"

Headlamp system

EXL-8, "System Diagram"

Parking, license plate and tail lamps system

EXL-26, "System Diagram"

Front fog lamp system

EXL-22, "System Diagram"

Exterior lamp battery saver system

EXL-28, "System Diagram"

Daytime running light system

EXL-15, "System Diagram"

Interior room lamp control system

INL-5, "System Diagram"

Step lamp system

Trunk room lamp system

Interior room lamp battery saver system

INL-9, "System Diagram"

Front wiper and washer system

WW-5, "System Diagram"

Warning chime system

WCS-5, "WARNING CHIME SYSTEM : System Diagram"

Door lock system

DLK-12, "DOOR LOCK AND UNLOCK SWITCH : System Dia-
gram"

Trunk open system

DLK-26, "TRUNK LID OPENER SWITCH : System Diagram"

Infiniti Vehicle Immobilizer System (IVIS) - NATS

SEC-17, "System Diagram"

Vehicle security system

SEC-23, "System Diagram"

Panic alarm

Automatic drive positioner system

ADP-13, "AUTOMATIC DRIVE POSITIONER SYSTEM : System
Diagram"

Rear window defogger system

DEF-4, "System Diagram"

BCS-4

< FUNCTION DIAGNOSIS >

BODY CONTROL SYSTEM

Component Parts Location

INFOID:0000000001612371

Intelligent Key system/engine start system

Door lock function

•

DLK-15, "DOOR REQUEST SWITCH : System Diagram"

(door

request switch)

•

DLK-20, "INTELLIGENT KEY : System Diagram"

(Intelligent

Key)

Trunk open function

•

DLK-29, "TRUNK REQUEST SWITCH : System Diagram"

(trunk request switch)

•

DLK-34, "INTELLIGENT KEY : System Diagram"

(Intelligent

Key)

Warning function

DLK-39, "System Description"

Key reminder function

DLK-46, "System Description"

Engine start function

SEC-9, "System Diagram"

Power window system

PWC-6, "System Diagram"

(front and rear window anti-pinch)

Retained accessory power (RAP) system

PWC-6, "System Description"

Tire pressure monitor system (TPMS) - AIR PRESSURE MONI-
TOR

WT-7, "System Diagram"

System

Refer to

1.

BCM

A.

Dash side lower (passenger side)

JPMIA0506ZZ

BCS

COMBINATION SWITCH READING SYSTEM

BCS-5

< FUNCTION DIAGNOSIS >

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COMBINATION SWITCH READING SYSTEM

System Diagram

INFOID:0000000001612372

System Description

INFOID:0000000001612373

OUTLINE

• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the

status of each switch.

• BCM is a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5). It reads a

maximum of 20 switch status.

COMBINATION SWITCH MATRIX

Combination switch circuit

Combination switch INPUT-OUTPUT system list

JPMIA0083GB

System

OUTPUT 1

OUTPUT 2

OUTPUT 3

OUTPUT 4

OUTPUT 5

INPUT 1

—

FR WASHER

FR WIPER LOW

TURN LH

TURN RH

INPUT 2

FR WIPER HI

—

FR WIPER INT

PASSING

HEADLAMP 1

INPUT 3

INT VOLUME 1

—

—

HEADLAMP 2

HI BEAM

JPMIA0066GB