Nissan Frontier D40. Manual - part 1131

WCS-16

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000005548401

Regarding Wiring Diagram information, refer to 

MWI-41, "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 3, 16 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.

Check continuity between combination meter harness connector
M24 terminals 13, 23 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check ground harness.

BCM (BODY CONTROL MODULE)

Unit

Power source

Fuse No.

Combination meter

Battery 19

Ignition switch ON or START 

14

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

M24

3

Ground

Battery 
voltage

Battery 
voltage

Battery

 voltage

16

0V

0V

Battery
voltage

WKIA3279E

Terminals

Continuity

(+)

(–)

Connector

Terminal

M24

13

Ground

Yes

23

WKIA3280E

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

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000005548402

Regarding Wiring Diagram information, refer to 

BCS-46, "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

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

18 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (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

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

WCS-18

< COMPONENT DIAGNOSIS >

METER BUZZER CIRCUIT

METER BUZZER CIRCUIT

Description

INFOID:0000000005274826

• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units.

Component Function Check

INFOID:0000000005274827

1.

 CHECK OPERATION OF METER BUZZER

1.

Select “BUZZER” of “BCM” on CONSULT-III.

2.

Perform “LIGHT WARN ALM” of “ACTIVE TEST”.

Does meter buzzer activate?

YES

>> Inspection End.

NO

>> Replace combination meter. Refer to 

MWI-95, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000005274828

1.

 CHECK POWER SUPPLY OF COMBINATION METER

Check power supply of combination meter. Refer to 

MWI-29, "COMBINATION METER : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness.

WCS

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

WCS-19

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000005274829

Transmits a seat belt buckle switch signal to the combination meter.

Component Function Check

INFOID:0000000005274830

1.

 CHECK COMBINATION METER INPUT SIGNAL

Select “DATA MONITOR” for “METER/M&A” and check the “SEAT BELT W/L” monitor value.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005274831

Regarding Wiring Diagram information, refer to 

WCS-23, "Wiring Diagram"

.

1.

 CHECK COMBINATION METER INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between combination meter harness connector
M24 terminal 24 and ground.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-95, "Removal

and Installation"

.

NO

>> GO TO 2

2.

 CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter and seat belt buckle switch LH.

3.

Check continuity between combination meter harness connector
M24 terminal 24 and seat belt buckle switch LH harness con-
nector B12 terminal 1.

4.

Check continuity between combination meter harness connector
M24 terminal 24 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

SEAT BELT W/L

When seat belt is fastened

: OFF

When seat belt is unfastened

: ON

24 - Ground

When driver seat belt is fastened

: Approx. 12V

When driver seat belt is unfastened

: Approx. 0V

WKIA3294E

24 - 1

: Continuity should exist.

24 - Ground

: Continuity should not exist.

WKIA3295E