Nissan Pathfinder (2008 year). Manual - part 629

WCS-22

< COMPONENT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

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 and ground.

Is the inspection result normal?

YES

>> Replace key switch and ignition knob switch.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000001712854

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.

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

WCS

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

WCS-23

< COMPONENT DIAGNOSIS >

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KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

Description

INFOID:0000000001712855

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000001712856

1.

CHECK BCM INPUT SIGNAL

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

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001712857

1.

CHECK FUSE

Check if the key switch 10A fuse [No. 25, located in the fuse block (J/B)] 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 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

3.

CHECK KEY SWITCH CIRCUIT 

1.

Disconnect BCM and key switch connectors.

2.

Check continuity between BCM harness connector M18 (A) and
key switch harness connector M27 (B).

3.

Check continuity between BCM harness connector M18 (A) and
ground.

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

A

B

Continuity

Connector

Terminal

Connector

Terminal

M18

37

M27

1

Yes

A

Ground

Continuity

Connector

Terminal

M18

37

No

WKIA4102E

WCS-24

< COMPONENT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

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 and ground.

Is the inspection result normal?

YES

>> Replace key switch.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000001712858

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.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Key switch

Terminal

M27

3

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

WCS

WARNING CHIME SYSTEM

WCS-25

< COMPONENT DIAGNOSIS >

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WARNING CHIME SYSTEM

Wiring Diagram

INFOID:0000000001712859

ALNWA0042GB

WCS-26

< COMPONENT DIAGNOSIS >

WARNING CHIME SYSTEM

ALNIA0184GB

WCS

WARNING CHIME SYSTEM

WCS-27

< COMPONENT DIAGNOSIS >

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ALNIA0185GB

WCS-28

< COMPONENT DIAGNOSIS >

WARNING CHIME SYSTEM

ALNIA0186GB

WCS

WARNING CHIME SYSTEM

WCS-29

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ALNIA0565GB