Infiniti QX56 (JA60). Manual - part 1001

WCS-2

Wiring Diagram  .......................................................

23

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

28

COMBINATION METER  ....................................

28

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

28

Wiring Diagram  .......................................................

30

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

47

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

48

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

50

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

50

Terminal Layout ......................................................

53

Physical Values  ......................................................

53

Wiring Diagram  .......................................................

59

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

63

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

64

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

64

SYMPTOM DIAGNOSIS  .............................

66

THE LIGHT REMINDER WARNING DOES 
NOT SOUND ......................................................

66

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

66

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

66

THE SEAT BELT WARNING CONTINUES 
SOUNDING, OR DOES NOT SOUND ...............

67

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

67

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

67

THE KEY WARNING DOES NOT SOUND  .......

68

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

68

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

68

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

69

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

69

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

69

Necessary for Steering Wheel Rotation After Bat-
tery Disconnect  .......................................................

69

WCS

DIAGNOSIS AND REPAIR WORKFLOW

WCS-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

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DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under

which the malfunction occurred.

>> GO TO 2

2.

CHECK SYMPTOM

• Check the symptom based on the information obtained from the customer.

• Check to see if any other malfunctions are present.

>> GO TO 3

3.

CHECK CONSULT-III SELF-DIAGNOSIS RESULTS

Connect CONSULT-III and perform “SELF-DIAGNOSIS”. Refer to 

MWI-23, "CONSULT-III Function (METER/

M&A)"

.

Are self-diagnosis results normal?

YES

>> GO TO 4

NO

>> Repair or replace the malfunctioning parts, GO TO 5

4.

NARROW DOWN MALFUNCTIONING PARTS THROUGH SYMPTOM DIAGNOSIS

Perform symptom diagnosis and repair or replace the identified malfunctioning parts.

>> GO TO 5

5.

FINAL CHECK

Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?

YES

>> Inspection End.

NO

>> GO TO 1

WCS-4

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

FUNCTION DIAGNOSIS

WARNING CHIME SYSTEM

WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System Diagram

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WARNING CHIME SYSTEM : System Description

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COMBINATION METER

• The buzzer for warning chime system is installed in the combination meter.

• The buzzer sounds when the combination meter receives a buzzer output signal from each unit.

BCM

BCM receives signals from various units and transmits a buzzer output signal to the combination meter with

CAN communication line if it judges that the warning buzzer should be activated.

BCM warning function list

AWNIA0210GB

Warning functions

Signal name

Light reminder warning chime

• Lighting switch position signal
• Door switch signal

Seat belt warning chime

Seat belt buckle switch signal

Key warning chime

• Key switch signal
• Door switch signal

WCS

WARNING CHIME SYSTEM

WCS-5

< FUNCTION DIAGNOSIS >

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WARNING CHIME SYSTEM : Component Parts Location

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WARNING CHIME SYSTEM : Component Description

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AWNIA0211ZZ

1.

Combination meter M23, M24

2.

Combination switch (lighting switch) 
M28

3.

BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)

4.

Front door switch LH B8

5.

Key switch and ignition knob switch 
M12

6.

Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74

Unit

Description

Combination meter

• Receives the seat belt buckle switch signal from the seat belt buckle pre-tensioner assembly 

LH (seat belt buckle switch) and transmits it to BCM with CAN communication line.

• Receives a buzzer output signal from BCM with CAN communication line.

BCM

Transmits signals provided by various units to the combination meter with CAN communication 
line.

Key switch and ignition knob 
switch

Transmits key switch signal to BCM.