Nissan Pathfinder (2011 year). Manual - part 624

WCS

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

WCS-21

< DTC/CIRCUIT DIAGNOSIS >

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SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000006247542

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

Component Function Check

INFOID:0000000006247543

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:0000000006247544

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-88, "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.

2011 Pathfinder

WCS-22

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000006247545

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.

2011 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:0000000006247546

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000006247547

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:0000000006247548

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

2011 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:0000000006247549

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

2011 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:0000000006247550

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000006247551

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:0000000006247552

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

2011 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:0000000006247553

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

2011 Pathfinder

WCS

COMBINATION METER

WCS-27

< ECU DIAGNOSIS INFORMATION >

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ECU DIAGNOSIS INFORMATION

COMBINATION METER

Reference Value

INFOID:0000000006706251

TERMINAL LAYOUT

PHYSICAL VALUES

LKIA0698E

Termi-

nal

Wire 

color

Item

Condition

Reference value (V)

(Approx.)

Ignition 

switch

Operation or condition

2

P

Generator

ON

Generator voltage low

0

Generator voltage normal

Battery voltage

3

R/Y

Battery power supply

—

—

Battery voltage

4

B/Y

Fuel level sensor ground

ON

—

0

5

W

Vehicle speed signal out-
put

ON

Speedometer operated
[When vehicle speed is ap-
prox. 40 km/h (25 MPH)]

6

LG

Vehicle speed signal out-
put (8-pulse)

ON

Speedometer operated
[When vehicle speed is ap-
prox. 40 km/h (25 MPH)]

NOTE:

Maximum voltage may be 12V due to spec-
ifications (connected units).

9

BR

Fuel level sensor signal

—

—

Refer to 

MWI-12, "FUEL GAUGE : System 

Description"

.

11

P

CAN-L

—

—

—

12

L

CAN-H

—

—

—

13

GR

Ground

—

—

0

16

W/G

Ignition switch ON or 
START

—

—

Battery voltage

18

L

A/T 1st position switch 
signal

—

A/T shift selector in 1st po-
sition

0

A/T shift selector in other 
than 1st position

Battery voltage

ELF1080D

PKIC0643E

2011 Pathfinder

WCS-28

< ECU DIAGNOSIS INFORMATION >

COMBINATION METER

Fail Safe

INFOID:0000000006706253

The combination meter performs a fail-safe operation for the functions listed below when communication is

lost.

20

Y

Overdrive control switch 
signal

—

Overdrive control switch 
pressed

0

Overdrive control switch 
released

Battery voltage

22

BR

Illumination control 
switch

—

—

Refer to 

INL-9, "System Description"

.

23

B

Ground

—

—

0

24

V

Seat belt buckle switch 
LH

ON

Unfastened (ON)

0

Fastened (OFF)

Battery voltage

31

G

Parking brake switch

ON

Parking brake depressed

0

Parking brake released

Battery voltage

32

SB

Brake fluid level switch

ON

Brake fluid level low

0

Brake fluid level normal

Battery voltage

33

LG

Stop lamp switch

—

Brake pedal depressed

Battery voltage

Brake pedal released

0

34

L

Washer fluid level switch

ON

Washer fluid level low

0

Washer fluid level normal

Battery voltage

37

SB

Air bag warning lamp in-
put

ON

Air bag warning lamp ON

4

Air bag warning lamp OFF

0

39

G

Security indicator input

OFF

Security indicator ON

0

Security indicator OFF

Battery voltage

40

LG

Seat belt buckle switch 
RH

ON

Unfastened (ON)

0

Fastened (OFF)

Battery voltage

Termi-

nal

Wire 

color

Item

Condition

Reference value (V)

(Approx.)

Ignition 

switch

Operation or condition

Function

Specifications

Speedometer

Zero indication.

Tachometer

Fuel gauge

Engine coolant temperature gauge

Engine oil pressure gauge

Voltage gauge

Illumination control

Meter illumination

Change to nighttime mode when communication is lost.

Segment LCD

Odometer

Freeze current indication.

A/T position

Display turns off.

Buzzer

Buzzer turns off.

2011 Pathfinder