Nissan Pathfinder (2012 year). Manual — part 614

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-19

< DTC/CIRCUIT DIAGNOSIS >

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BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000007829992

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

21 (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

August 2012

2012 Pathfinder

WCS-20

< DTC/CIRCUIT DIAGNOSIS >

METER BUZZER CIRCUIT

METER BUZZER CIRCUIT

Description

INFOID:0000000007347541

• 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:0000000007347542

1.

CHECK OPERATION OF METER BUZZER

1. Select “BUZZER” of “BCM” on CONSULT.

2. Perform “LIGHT WARN ALM” of “ACTIVE TEST”.
Does meter buzzer activate?

YES

>> Inspection End.

NO

>> Refer to

WCS-20, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007347543

1.

CHECK POWER SUPPLY OF COMBINATION METER

Check power supply of combination meter. Refer to

MWI-31, "COMBINATION METER : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to

MWI-89, "Removal and Installation"

.

NO

>> Repair power supply circuit of combination meter.

August 2012

2012 Pathfinder

WCS

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

WCS-21

< DTC/CIRCUIT DIAGNOSIS >

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SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000007347544

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

Component Function Check

INFOID:0000000007347545

1.

CHECK COMBINATION METER INPUT SIGNAL

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

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to

WCS-21, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007347546

Regarding Wiring Diagram information, refer to

WCS-41, "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-89, "Removal and Installation"

.

NO

>> GO TO 2

2.

CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect combination meter connector and seat belt buckle switch LH connector.

3. Check continuity between combination meter harness connector M24 terminal 24 and seat belt buckle

switch LH harness connector 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 harness or connector.

3.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check continuity between seat belt buckle switch LH harness connector B12 terminal 2 and ground.

Is the inspection result normal?

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

24 - 1

: Continuity should exist.

24 - Ground

: Continuity should not exist.

2 - Ground

: Continuity should exist.

August 2012

2012 Pathfinder

WCS-22

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007347547

1.

CHECK SEAT BELT BUCKLE SWITCH

1. Turn ignition switch OFF.

2. Disconnect the seat belt buckle switch LH connector.

3. Check continuity between the seat belt buckle switch LH terminals 1 and 2.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the seat belt buckle switch LH.

1– 2
When seat belt is
fastened

: Continuity should not exist.

When seat belt is
unfastened

: Continuity should exist.

August 2012

2012 Pathfinder

WCS

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

WCS-23

< DTC/CIRCUIT DIAGNOSIS >

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KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

Description

INFOID:0000000007347548

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000007347549

1.

CHECK BCM INPUT SIGNAL

Select “DATA MONITOR” for “BCM” and check the “KEY ON SW” monitor value.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to

WCS-23, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007347550

Regarding Wiring Diagram information, refer to

WCS-41, "Wiring Diagram"

.

1.

CHECK FUSE

Check if the key switch and ignition knob switch 10A fuse (No. 31, located in the fuse and fusible link box) is

blown.
Is the fuse blown?

YES

>> Be sure to repair the cause of malfunction before installing new fuse.

NO

>> GO TO 2

2.

CHECK BCM INPUT SIGNAL

Check voltage between BCM harness connector M18 terminal 37

and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

3.

CHECK KEY SWITCH CIRCUIT

KEY ON SW
When key is inserted into key cylinder

: ON

When key is removed from key cylinder : OFF

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

BCM

connector

Terminal

M18

37

Ground

Key is inserted

Battery voltage

Key is removed

0

PKIC0721E

August 2012

2012 Pathfinder

WCS-24

< DTC/CIRCUIT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

1. Disconnect BCM connector M18 and key switch and ignition

knob switch connector.

2. Check continuity between BCM harness connector M18 (A) ter-

minal 37 and key switch and ignition knob switch harness con-

nector M66 (B) terminal 4.

3. Check continuity between BCM harness connector M18 (A) ter-

minal 37 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

Check voltage between key switch and ignition knob switch harness

connector M66 terminal 3 and ground.

Is the inspection result normal?

YES

>> Replace key switch and ignition knob switch.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007347551

1.

CHECK KEY SWITCH

1. Turn ignition switch OFF.

2. Disconnect key switch and ignition knob switch connector.

3. Check continuity between key switch and ignition knob switch

terminals 3 and 4.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace key switch and ignition knob switch.

BCM

Key switch and

ignition knob switch

Continuity

Connector

Terminal

Connector

Terminal

M18 (A)

37

M66 (B)

4

Yes

BCM

Ground

Continuity

Connector

Terminal

M18 (A)

37

No

AWNIA0239ZZ

Terminals

Voltage

(Approx.)

(+)

(

−

)

Key switch and ignition

knob switch connector

Terminal

M66

3

Ground

Battery voltage

AWNIA0240ZZ

3 – 4
When key is inserted
into key cylinder

: Continuity should exist.

When key is removed
from key cylinder

: Continuity should not exist.

AWNIA0241ZZ

August 2012

2012 Pathfinder

WCS

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

WCS-25

< DTC/CIRCUIT DIAGNOSIS >

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KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

Description

INFOID:0000000007347552

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000007347553

1.

CHECK BCM INPUT SIGNAL

Select “DATA MONITOR” for “BCM” and check the “KEY ON SW” monitor value.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to

WCS-25, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007347554

Regarding Wiring Diagram information, refer to

WCS-41, "Wiring Diagram"

.

1.

CHECK FUSE

Check if the key switch 10A fuse (No. 25, located in the fuse and fusible link box) is blown.
Is the fuse blown?

YES

>> Be sure to repair the cause of malfunction before installing new fuse.

NO

>> GO TO 2

2.

CHECK BCM INPUT SIGNAL

Check voltage between BCM harness connector M18 terminal 37

and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

3.

CHECK KEY SWITCH CIRCUIT

KEY ON SW
When key is inserted into key cylinder

: ON

When key is removed from key cylinder : OFF

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

BCM

connector

Terminal

M18

37

Ground

Key is inserted

Battery voltage

Key is removed

0

PKIC0721E

August 2012

2012 Pathfinder

WCS-26

< DTC/CIRCUIT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

1. Disconnect BCM connector M18 and key switch connector.

2. Check continuity between BCM harness connector M18 (A) ter-

minal 37 and key switch harness connector M27 (B) terminal 1.

3. Check continuity between BCM harness connector M18 (A) ter-

minal 37 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

Check voltage between key switch harness connector M27 terminal

2 and ground.

Is the inspection result normal?

YES

>> Replace key switch.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007347555

1.

CHECK KEY SWITCH

1. Turn ignition switch OFF.

2. Disconnect key switch connector.

3. Check continuity between key switch terminals 1 and 2.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace key switch.

BCM

Key switch

Continuity

Connector

Terminal

Connector

Terminal

M18 (A)

37

M27 (B)

1

Yes

BCM

Ground

Continuity

Connector

Terminal

M18 (A)

37

No

WKIA4102E

Terminals

Voltage

(Approx.)

(+)

(

−

)

Key switch

Terminal

M27

2

Ground

Battery voltage

WKIA4103E

1 – 2
When key is inserted
into key cylinder

: Continuity should exist.

When key is removed
from key cylinder

: Continuity should not exist.

WKIA4101E

August 2012

2012 Pathfinder