Infiniti QX56 (JA60). Manual - part 1004

 

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Infiniti QX56 (JA60). Manual - part 1004

 

 

WCS-14

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)

INFOID:0000000005382325

DATA MONITOR

ACTIVE TEST

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judged by ignition power supply input

KEY ON SW [ON/OFF]

Key switch status

DOOR SW -DR [ON/OFF]

Front door switch (driver side) status judged by BCM

LIGHT SW 1ST [ON/OFF]

Lighting switch status judged by the lighting switch signal read with combination switch reading func-
tion

BUCKLE SW [ON/OFF]

Seat belt buckle switch status

Test Item

Description

LIGHT WARN ALM

The light reminder warning operation can be checked by operating the relevant function (On/Off).

IGN KEY WARN ALM

The key reminder warning operation can be checked by operating the relevant function (On/Off).

SEAT BELT WARN TEST

The seat belt warning operation can be checked by operating the relevant function (On/Off).

DOOR WARNING IND

The door open warning operation can be checked by operating the relevant function (On/Off).

W C S

POWER SUPPLY AND GROUND CIRCUIT

WCS-15

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER
COMBINATION METER : Diagnosis Procedure

INFOID:0000000005382371

Regarding Wiring Diagram information, refer to 

WCS-30, "Wiring Diagram"

.

1.

CHECK FUSES

Check for blown combination meter fuses.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect combination meter connector M24.

2. Check voltage between combination meter harness connector

M24 terminals 21, 37, 40 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Check harness for open between combination meter and fuse.

3.

GROUND CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Disconnect combination meter connector M23.

3. Check continuity between combination meter harness connector

M23 terminal 47, 52 and ground, and connector M24 terminal 20

and ground.

Unit

Power source

Fuse No.

Combination meter

Battery 3

Ignition switch ON or START 

14

Ignition switch ACC or ON

4

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

START

Connector

Terminal

M24

21

Ground

0V

0V

Battery 
voltage

Battery 
voltage

37

0V

Battery 
voltage

Battery

 voltage

0V

40

Battery
voltage

Battery
voltage

Battery
voltage

Battery 
voltage

AWNIA0204ZZ

Terminals

Continuity

(+)

(–)

Connector

Terminal

A: M23

47

Ground

Yes

52

B: M24

20

AWNIA0205ZZ

WCS-16

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check ground harness.

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000005382372

Regarding Wiring Diagram information, refer to 

WCS-59, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

22 (15A)

70

F (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

59 (10A)

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-17

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

 

 

 

 

 

 

 

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