Nissan Pathfinder: Exterior Lighting System - Dtc/circuit Diagnosis

Nissan Pathfinder (R53) 2022-2025 Service Manual / Driver Controls :: Exterior Lighting System / Led Headlamp / Dtc/circuit Diagnosis

B121a-11 Fr Fog Lamp Lh Pwr Sply Circ
B20a4-87 Headlamp (lh) Lin Communication
B20d4-11 Tail Lamp Lh Pwr Sply Circ
B20e3-96 Led Headlamp Lh
Front Side Marker Lamp Circuit
Tail Lamp Circuit
License Plate Lamp Circuit
Rear Side Marker Lamp Circuit
Stop Lamp Circuit
Back-Up Lamp Circuit
Front Fog Lamp Circuit
Turn Signal Lamp Circuit
Hazard Switch Circuit

B121a-11 Fr Fog Lamp Lh Pwr Sply Circ Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)		DTC detection condition
B121A–11	FR FOG LAMP LH PWR SPLY CIRC (Front fog lamp left hand power supply circuit)	[CIRCUIT SHORT TO GROUND]	Diagnosis condition	When front fog lamp ON conditions are satisfied (Smart FET inside IPDM E/R is ON)
			Signal (terminal)	Front fog lamp LH power supply circuit
			Threshold	Overcurrent is detected
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Harness or connector
Front fog lamp LH
- LED
IPDM E/R

FAIL-SAFE

Shuts off the power supply to the front fog lamp LH power supply circuit until the front fog lamp ON conditions are no longer satisfied.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

CONSULT

Ignition switch ON.
Select “Fr fog lamp (LH) circ malfunctn” in “Data Monitor” mode of “IPDM E/R”.
Check the monitor status.

Monitor item Monitor status

Fr fog lamp (LH) circ malfunctn 0

1

Monitor item	Monitor status
Fr fog lamp (LH) circ malfunctn	0
1

What is the monitor status?

“0”>>

GO TO 2.

“1”>>

A short circuit is detected multiple times in the front fog lamp LH power supply circuit, and damage accumulates at the Smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn ON the Smart FET. Because the DTC cannot be reproduced in this state, perform DTC Diagnosis Procedure and replace IPDM E/R after the malfunctioning part is repaired. Refer to Removal and Installation.

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

Ignition switch OFF.
Ignition switch ON.
Turn lighting switch 2ND, and front fog lamp switch ON.
Select “Self Diagnostic Result” mode of “IPDM E/R”.
Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK FRONT FOG LAMP LH POWER SUPPLY CIRCUIT (SHORT)

Ignition switch OFF.
Turn lighting switch OFF or AUTO, and front fog lamp switch OFF.
Disconnect IPDM E/R connector and front fog lamp LH connector.
Check continuity between IPDM E/R harness connector and ground.

IPDM E/R — Continuity

Connector Terminal

E217 51 Ground No

IPDM E/R	—	Continuity
E217	51	Ground	No

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

CHECK FRONT FOG LAMP LH POWER SUPPLY

Connect IPDM E/R connector.
Ignition switch ON
Turn lighting switch 2ND.
With operating the front fog lamp switch, check voltage between front fog lamp LH harness connector and ground.

+ - Condition
Voltage
(Approx.)

Front fog lamp LH

Connector Terminal

E305 2 Ground Front fog lamp switch ON Battery voltage

OFF 0 V

+	-	Condition	Voltage (Approx.)
E305	2	Ground	Front fog lamp switch	ON	Battery voltage
OFF	0 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace IPDM E/R. Refer to Removal and Installation.

CHECK FRONT FOG LAMP LH

Check the front fog lamp LH. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace front fog lamp LH. Refer to Removal and Installation.

Component Inspection

CHECK FRONT FOG LAMP LH

Ignition switch OFF.
Disconnect front fog lamp LH connector.
Check continuity between front fog lamp LH terminals.

Front fog lamp LH Continuity

Terminal

+ –

2 1 Yes

Front fog lamp LH	Continuity
2	1	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace front fog lamp LH. Refer to Removal and Installation.

B20a4-87 Headlamp (lh) Lin Communication Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)		DTC detection condition
B20A4–87	Headlamp (LH) LIN communication [Headlamp (left hand) local interconnect network communication]	[MISSING MESSAGE]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Headlamp LH LIN communication
			Threshold	Detected headlamp LH LIN communication error
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Harness or connector
Front combination lamp LH
- LED headlamp control module
- Harness
IPDM E/R

FAIL-SAFE

Transmits the headlamp warning signal to the combination meter via CAN communication (when the ignition switch is placed ON, the headlamp warning is displayed on the information display of the combination meter).
Transmits the request signal to the both side LED headlamp control modules via LIN communication, and turns ON the headlamp (LO) and parking lamp.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

Ignition switch ON.
Select “Self Diagnostic Result” mode of “IPDM E/R”.
Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK SELF-DIAGNOSIS RESULT

CONSULT

Ignition switch ON.
Select “Self Diagnostic Result” mode of “IPDM E/R”.
Check if DTC "B20A4–87" is displayed with DTC "B20A2–87".

Is applicable DTC detected?

YES>>

GO TO 2.

NO>>

GO TO 3.

CHECK HEADLAMP LH LIN COMMUNICATION CIRCUIT 1

Ignition switch OFF.
Disconnect the following connectors:
- Front combination lamp RH
- Front combination lamp LH
- IPDM E/R
Check continuity between front combination lamp LH harness connector and IPDM E/R harness connector.

Front combination lamp LH IPDM E/R Continuity

Connector Terminal Connector Terminal

E249 2 E119 38 Yes
Check continuity between IPDM E/R harness connector and ground.

IPDM E/R (-) Continuity

Connector Terminal

E119 38 Ground No

Front combination lamp LH	IPDM E/R	Continuity
E249	2	E119	38	Yes

IPDM E/R	(-)	Continuity
E119	38	Ground	No

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK HEADLAMP LH FUSE

Ignition switch OFF.
Check that the following fuse is not blown (open):

Unit Fuse No. Capacity

Front combination lamp LH 88 15 A

Unit	Fuse No.	Capacity
Front combination lamp LH	88	15 A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 4.

CHECK HEADLAMP LH POWER SUPPLY

Disconnect front combination lamp LH connector.
Check voltage between front combination lamp LH harness connector and ground.

(+) (-)
Voltage
(Approx.)

Front combination lamp LH

Connector Terminal

E249 1 Ground Battery voltage

(+)	(-)	Voltage (Approx.)
E249	1	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace harness.

CHECK HEADLAMP LH GROUND CIRCUIT

Check continuity between front combination lamp LH harness connector and ground.

Front combination lamp LH		(-)	Continuity
Connector	Terminal	(-)	Continuity
E249	6	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness.

CHECK HEADLAMP LH CONTROL SIGNAL

Ignition switch ON.
Check voltage between front combination lamp LH harness connector and ground.

(+) (-)
Voltage
(Approx.)

Front combination lamp LH

Connector Terminal

E249 3 Ground Battery voltage

(+)	(-)	Voltage (Approx.)
E249	3	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

GO TO 7.

CHECK HEADLAMP LH CONTROL SIGNAL CIRCUIT

Ignition switch OFF.
Disconnect IPDM E/R connector.
Check continuity between front combination lamp LH harness connector and IPDM E/R harness connector.

Front combination lamp LH IPDM E/R Continuity

Connector Terminal Connector Terminal

E249 3 E217 50 Yes

Front combination lamp LH	IPDM E/R	Continuity
E249	3	E217	50	Yes

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK HEADLAMP LH LIN COMMUNICATION CIRCUIT 2

Ignition switch OFF.
Disconnect IPDM E/R connector.
Check continuity between front combination lamp LH harness connector and IPDM E/R harness connector.

Front combination lamp LH IPDM E/R Continuity

Connector Terminal Connector Terminal

E249 2 E119 38 Yes

Front combination lamp LH	IPDM E/R	Continuity
E249	2	E119	38	Yes

Is the inspection result normal?

YES>>

Replace front combination lamp LH. Refer to Removal and Installation.

NO>>

Repair or replace harness.

B20d4-11 Tail Lamp Lh Pwr Sply Circ Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)		DTC detection condition
B20D4–11	TAIL LAMP LH PWR SPLY CIRC (Tail lamp left hand power supply circuit)	[CIRCUIT SHORT TO GROUND]	Diagnosis condition	When the license plate lamp, side marker lamp and tail lamp ON conditions are satisfied (Smart FET inside IPDM E/R is ON)
			Signal (terminal)	The following power supply circuit: Side marker lamp Tail lamp License plate lamp
			Threshold	Overcurrent is detected
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Harness or connector
Front combination lamp LH
Front combination lamp RH
Rear combination lamp (body side) LH
- LED (tail lamp)
- Harness
Rear combination lamp (body side) RH
- LED (tail lamp)
- Harness
Rear combination lamp (back door side) LH
- LED (tail lamp)
Rear combination lamp (back door side) RH
- LED (tail lamp)
Rear side marker lamp LH bulb
Rear side marker lamp LH bulb socket or harness
Rear side marker lamp RH bulb
Rear side marker lamp RH bulb socket or harness
License plate lamp LH
License plate lamp RH
IPDM E/R

FAIL-SAFE

Shuts off the power supply to the following power supply circuits until the license plate lamp, side marker lamp and tail lamp ON conditions are no longer satisfied:

Tail lamp LH
Tail lamp RH
License plate lamp LH
License plate lamp RH
Front side marker lamp LH
Front side marker lamp RH
Rear side marker lamp LH
Rear side marker lamp RH

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

CONSULT

Ignition switch ON.
Select “T LAMP LH CIRC MALFUNCTN” and “T LAMP RH CIRC MALFUNCTN” in “Data Monitor” mode of “IPDM E/R”.
Check the monitor status.

Monitor item Monitor status

T LAMP LH CIRC MALFUNCTN 0

1

T LAMP RH CIRC MALFUNCTN 0

1

Monitor item	Monitor status
T LAMP LH CIRC MALFUNCTN	0
1
T LAMP RH CIRC MALFUNCTN	0
1

What is the monitor status?

“0”>>

GO TO 2.

“1”>>

A short circuit is detected multiple times in the side marker lamp, tail lamp or license plate lamp power supply circuit, and damage accumulates at the Smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn ON the Smart FET. Because the DTC cannot be reproduced in this state, perform DTC Diagnosis Procedure and replace IPDM E/R after the malfunctioning part is repaired. Refer to Removal and Installation.

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

Ignition switch OFF.
Ignition switch ON.
Turn lighting switch 1ST.
Select “Self Diagnostic Result” mode of “IPDM E/R”.
Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK TAIL LAMP POWER SUPPLY CIRCUIT (SHORT)

Ignition switch OFF.
Disconnect the following connectors:
- IPDM E/R
- Front combination lamp LH
- Front combination lamp RH
- Rear combination lamp LH (body side)
- Rear combination lamp RH (body side)
- Rear combination lamp LH (back door side)
- Rear combination lamp RH (back door side)
- License plate lamp LH
- License plate lamp RH
Check continuity between IPDM E/R harness connector and ground.

IPDM E/R (-) Continuity

Connector Terminal

E120 4 Ground No

17

IPDM E/R	(-)	Continuity
E120	4	Ground	No
17

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

CHECK TAIL LAMP POWER SUPPLY

Connect IPDM E/R connector.
Ignition switch ON.

With operating the lighting switch, check voltage between rear combination lamp (body side) harness connector and ground.

(+)			(-)	Condition		Voltage (Approx.)
Rear combination lamp (body side)
Connector		Terminal
RH	B413	2	Ground	Lighting switch	1ST	Battery voltage
RH	B413				OFF or AUTO*	0 V
LH	B412				1ST	Battery voltage
LH	B412				OFF or AUTO*	0 V

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace IPDM E/R. Refer to Removal and Installation.

CHECK TAIL LAMP

Check the tail lamp. Refer to Component Inspection (Tail Lamp).

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace the malfunctioning part.

CHECK LICENSE PLATE LAMP

Check the license plate lamp. Refer to Component Inspection (License Plate Lamp).

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace the malfunctioning part.

CHECK FRONT SIDE MARKER LAMP

Check the front side marker lamp. Refer to Component Inspection (Front Side Marker Lamp).

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace the malfunctioning part.

CHECK REAR SIDE MARKER LAMP

Check the rear side marker lamp. Refer to Component Inspection (Rear Side Marker Lamp).

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Repair or replace the malfunctioning part.

Component Inspection (Tail Lamp)

CHECK TAIL LAMP

Ignition switch OFF.
Disconnect rear combination lamp connector.
Check continuity between rear combination lamp terminals.

Body side
Rear combination lamp (body side) Continuity

Terminal

+ –

2 1 Yes

Back door side
Rear combination lamp (back door side) Continuity

Terminal

+ –

2 1 Yes

Body side
Rear combination lamp (body side)	Continuity
2	1	Yes

Back door side
Rear combination lamp (back door side)	Continuity
2	1	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Body side: Replace corresponding rear combination lamp (body side). Refer to Removal and Installation.

NO>>

Back door side: Replace corresponding rear combination lamp (back door side). Refer to Removal and Installation.

Component Inspection (License Plate Lamp)

CHECK LICENSE PLATE LAMP

Ignition switch OFF.
Disconnect license plate lamp connector.
Check continuity between license plate lamp terminals.

License plate lamp Continuity

Terminal

+ –

2 1 Yes

License plate lamp	Continuity
2	1	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace corresponding license plate lamp. Refer to Removal and Installation.

Component Inspection (Front Side Marker Lamp)

CHECK FRONT SIDE MARKER LAMP

Ignition switch OFF.
Disconnect front combination lamp connector.
Check continuity between front combination lamp terminals.

Front combination lamp Continuity

Terminal

+ –

10 9 Yes

Front combination lamp	Continuity
10	9	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace corresponding front combination lamp. Refer to Removal and Installation.

Component Inspection (Rear Side Marker Lamp)

CHECK REAR SIDE MARKER LAMP

Ignition switch OFF.
Disconnect rear combination lamp (body side) connector.
Check continuity between rear combination lamp (body side) terminals.

Rear combination lamp (body side) Continuity

Terminal

+ –

2 1 Yes

Rear combination lamp (body side)	Continuity
2	1	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace corresponding rear side marker lamp bulb. Refer to Bulb Replacement.

B20e3-96 Led Headlamp Lh Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)		DTC detection condition
B20E3–96	LED HEADLAMP LH (Light emitting diode headlamp left hand)	[CMPNENT INTERNAL MLFNCTN]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Headlamp warning signal (via LIN communication)
			Threshold	Detected a malfunction of headlamp LH (LO) circuit
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Front combination lamp LH
- LED [Headlamp (LO)]
- LED headlamp control module

FAIL-SAFE

Transmits the headlamp warning signal to the combination meter via CAN communication (when the ignition switch is placed ON, the headlamp warning is displayed on the information display of the combination meter).
Transmits the request signal to both side LED headlamp control modules via LIN communication, and turns ON the headlamp (LO) and parking lamp.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

Ignition switch ON.
Select “Self Diagnostic Result” mode of “IPDM E/R”.
Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

REPLACE HEADLAMP LH

Replace the front combination lamp LH. Refer to Removal and Installation.

Inspection End.

Front Side Marker Lamp Circuit Nissan Pathfinder 2022

Component Function Check

CHECK TAIL LAMP OPERATION

Check tail lamp is turned ON when lighting switch is turned 1ST.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Check tail lamp circuit. Refer to Component Function Check.

CHECK FRONT SIDE MARKER LAMP OPERATION

Ignition switch ON.
With operating the lighting switch, check that the front side marker lamp is turned ON.

Lighting switch 1ST : Front side marker lamp ON

Lighting switch OFF or AUTO* : Front side marker lamp OFF

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

Front side marker lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK FRONT SIDE MARKER LAMP POWER SUPPLY CIRCUIT

Disconnect IPDM E/R connector and front combination lamp connector.
Check continuity between IPDM E/R harness connector and front combination lamp harness connector.

IPDM E/R Front combination lamp Continuity

Connector Terminal Connector Terminal

RH E120 17 E241 10 Yes

LH 4 E239

IPDM E/R	Front combination lamp	Continuity
RH	E120	17	E241	10	Yes
LH	4	E239

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

CHECK FRONT SIDE MARKER LAMP GROUND CIRCUIT

Check continuity between front combination lamp harness connector and ground.

Front combination lamp			—	Continuity
Connector		Terminal	—	Continuity
RH	E241	9	Ground	Yes
LH	E239	9	Ground	Yes

Is the inspection result normal?

YES>>

Replace corresponding front combination lamp. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Tail Lamp Circuit Nissan Pathfinder Fifth generation

Component Function Check

CHECK TAIL LAMP OPERATION

Ignition switch ON.
With operating the lighting switch, check that the tail lamp is turned ON.

Lighting switch 1ST : Tail Lamp ON

Lighting switch OFF or AUTO* : Tail lamp OFF

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

Tail lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK TAIL LAMP OUTPUT VOLTAGE

Ignition switch ON.

With operating the lighting switch, check voltage between IPDM E/R harness connector and ground.

+			-	Condition		Voltage (Approx.)
IPDM E/R
Connector		Terminal
RH	E120	17	Ground	Lighting switch	1ST	Battery voltage
RH		17			OFF or AUTO*	0 V
LH		4			1ST	Battery voltage
LH		4			OFF or AUTO*	0 V

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK TAIL LAMP OUTPUT CIRCUIT (SHORT)

Disconnect the following connectors:
- Front combination lamp LH
- Front combination lamp RH
- Rear combination lamp LH (body side)
- Rear combination lamp RH (body side)
- Rear combination lamp LH (back door side)
- Rear combination lamp RH (back door side)
- License plate lamp LH
- License plate lamp RH
- IPDM E/R
Check continuity between IPDM E/R harness connector and ground.


IPDM E/R			—	Continuity
Connector		Terminal	—	Continuity
RH	E120	17	Ground	No
LH	E120	4	Ground	No

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK TAIL LAMP POWER SUPPLY CIRCUIT

Ignition switch OFF.
Turn lighting switch OFF or AUTO.
Disconnect IPDM E/R connector and rear combination lamp connector.
Check continuity between IPDM E/R harness connector and rear combination lamp harness connector.

Body side
IPDM E/R Rear combination lamp (body side) Continuity

Connector Terminal Connector Terminal

RH E120 17 B413 2 Yes

LH 4 B412

Back door side
IPDM E/R Rear combination lamp (back door side) Continuity

Connector Terminal Connector Terminal

RH E120 17 D562 2 Yes

LH 4 D511

Body side
IPDM E/R	Rear combination lamp (body side)	Continuity
RH	E120	17	B413	2	Yes
LH	4	B412

Back door side
IPDM E/R	Rear combination lamp (back door side)	Continuity
RH	E120	17	D562	2	Yes
LH	4	D511

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK TAIL LAMP GROUND CIRCUIT

Check continuity between rear combination lamp harness connector and ground.

Body side
Rear combination lamp (body side)			—	Continuity
Connector		Terminal	—	Continuity
RH	B413	1	Ground	Yes
LH	B412	1	Ground	Yes

Back door side
Rear combination lamp (back door side)			—	Continuity
Connector	Terminal	Terminal	—	Continuity
RH	D562	1	Ground	Yes
LH	D511	1	Ground	Yes

Is the inspection result normal?

YES>>

Body side: Replace corresponding rear combination lamp (body side). Refer to Removal and Installation.

YES>>

Back door side: Replace corresponding rear combination lamp (back door side). Refer to Removal and Installation.

NO>>

Repair or replace harness.

License Plate Lamp Circuit Nissan Pathfinder 2022

Component Function Check

CHECK TAIL LAMP LH OPERATION

Check that tail lamp LH is turned ON when lighting switch is turned 1ST.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Check tail lamp circuit. Refer to Component Function Check.

CHECK LICENSE PLATE LAMP OPERATION

Ignition switch ON.
With operating the lighting switch, check that the license plate lamp is turned ON.

Lighting switch 1ST : License plate lamp ON

Lighting switch OFF or AUTO* : License plate lamp OFF

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

License plate lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK LICENSE PLATE LAMP POWER SUPPLY CIRCUIT

Disconnect IPDM E/R connector and license plate lamp connector.
Check continuity between IPDM E/R harness connector and license plate lamp harness connector.

IPDM E/R License plate lamp Continuity

Connector Terminal Connector Terminal

RH E120 4 B461 2 Yes

LH B460

IPDM E/R	License plate lamp	Continuity
RH	E120	4	B461	2	Yes
LH	B460

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

CHECK LICENSE PLATE LAMP GROUND CIRCUIT

Check continuity between license plate lamp harness connector and ground.

License plate lamp			—	Continuity
Connector		Terminal	—	Continuity
RH	B461	1	Ground	Yes
LH	B460	1	Ground	Yes

Is the inspection result normal?

YES>>

Replace corresponding license plate lamp. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Rear Side Marker Lamp Circuit Nissan Pathfinder 5th Gen

Component Function Check

CHECK TAIL LAMP OPERATION

Check that tail lamp is turned ON when lighting switch is turned 1ST.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Check tail lamp circuit. Refer to Component Function Check.

CHECK REAR SIDE MARKER LAMP OPERATION

Ignition switch ON.
With operating the lighting switch, check that the rear side marker lamp is turned ON.

Lighting switch 1ST : Rear side marker lamp ON

Lighting switch OFF or AUTO* : Rear side marker lamp OFF

*: Only when the illumination judgement by intelligent auto light system is OFF.

Is the inspection result normal?

YES>>

Rear side marker lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK REAR SIDE MARKER LAMP BULB

Ignition switch OFF.
Check the rear side marker lamp bulb.

Is the inspection result normal?

YES>>

Check corresponding rear side marker lamp bulb socket. Repair or replace if necessary.

NO>>

Replace corresponding rear side marker lamp bulb. Refer to Bulb Replacement.

Stop Lamp Circuit Nissan Pathfinder Fifth generation

Component Function Check

CHECK STOP LAMP OPERATION

Ignition switch ON.
With operating the brake pedal, check that the stop lamp and high-mounted stop lamp is turned ON.

Depressed : Stop lamp and high-mounted stop lamp ON

Fully released : Stop lamp and high-mounted stop lamp OFF

Is the inspection result normal?

YES>>

Stop lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SYMPTOM

Check symptom (A or B)

Symptom
A	All of stop lamp and high-mounted stop lamp are not turned ON
B	Any of stop lamp and high-mounted stop lamp are not turned ON

Which symptom is detected?

A>>

GO TO 2.

B>>

GO TO 10.

CHECK FUSE

Ignition switch OFF.
Check that any of the following fuse is not blown (open):
Unit Location Fuse No. Capacity
Battery power supply (stop lamp)

Battery power supply (stop lamp switch)
Fuse block (J/B)

21

10 A

Unit	Location	Fuse No.	Capacity
Battery power supply (stop lamp) Battery power supply (stop lamp switch)	Fuse block (J/B)	21	10 A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 3.

CHECK BATTERY POWER SUPPLY (STOP LAMP)

Disconnect BCM connector.
Check voltage between BCM harness connector and ground.
+ -
Voltage
(Approx.)

BCM

Connector Terminal

M81 139 Ground Battery voltage

+	-	Voltage (Approx.)
M81	139	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

CHECK BATTERY POWER SUPPLY CIRCUIT (STOP LAMP)

Disconnect fuse block (J/B) connector
Check voltage between BCM harness connector and fuse block (J/B) harness connector.

BCM Fuse block (J/B) Continuity

Connector Terminal Connector Terminal

M81 139 E28 2R Yes

Is the inspection result normal?

YES>>

Replace fuse block (J/B).

NO>>

Repair or replace harness.

CHECK STOP LAMP SWITCH POWER SUPPLY

Disconnect stop lamp switch connector.
Check voltage between stop lamp switch harness connector and ground.

+ -
Voltage
(Approx.)

Stop lamp switch

Connector Terminal

E38 1 Ground Battery voltage

+	-	Voltage (Approx.)
E38	1	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

Disconnect fuse block (J/B) connector.
Check continuity between stop lamp switch harness connector and fuse block (J/B) harness connector.

Stop lamp switch Fuse block (J/B) Continuity

Connector Terminal Connector Terminal

E38 1 E28 2R Yes

Is the inspection result normal?

YES>>

Replace fuse block (J/B).

NO>>

Repair or replace harness.

CHECK STOP LAMP SWITCH SIGNAL

Connect stop lamp switch connector.

With operating the brake pedal, check voltage between BCM harness connector and ground.

+		-	Condition			Voltage (Approx.)
BCM
Connector	Terminal
M80	110	Ground	Ignition switch	ON	Brake pedal is released	0 V
				OFF	Brake pedal is released	0 V
				ON	Brake pedal is depressed	Battery voltage
				OFF	Brake pedal is depressed	Battery voltage

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

GO TO 8.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

Replace stop lamp switch. Refer to Exploded View.

CHECK STOP LAMP SWITCH SIGNAL CIRCUIT (OPEN)

Disconnect stop lamp switch connector.
Check continuity between BCM harness connector and stop lamp switch harness connector.

BCM Stop lamp switch Continuity

Connector Terminal Connector Terminal

M80 110 E38 2 Yes

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Repair or replace harness.

CHECK STOP LAMP / HIGH-MOUNTED STOP LAMP OUTPUT VOLTAGE

CONSULT

Ignition switch ON.
Select “STOP LAMP 1” or “STOP LAMP 2” in “Active Test” mode of "BCM(HEAD LAMP)".
With operating the test items, check voltage between BCM harness connector and ground.

Stop lamp RH
+ - Test item
Voltage
(Approx.)

BCM

Connector Terminal

B45 157 Ground STOP LAMP 1 On Battery voltage

Off 0 V

Stop lamp LH and high-mounted stop lamp
+ - Test item
Voltage
(Approx.)

BCM

Connector Terminal

B45 160 Ground STOP LAMP 2 On Battery voltage

Off 0 V

Stop lamp RH
+	-	Test item	Voltage (Approx.)
B45	157	Ground	STOP LAMP 1	On	Battery voltage
Off	0 V

Stop lamp LH and high-mounted stop lamp
+	-	Test item	Voltage (Approx.)
B45	160	Ground	STOP LAMP 2	On	Battery voltage
Off	0 V

Is the inspection result normal?

YES>>

GO TO 12.

NO>>

GO TO 11.

CHECK STOP LAMP / HIGH-MOUNTED STOP LAMP POWER SUPPLY CIRCUIT (SHORT)

Ignition switch OFF.
Disconnect the following connectors:
- BCM
- Rear combination lamp LH (body side)
- Rear combination lamp RH (body side)
- High-mounted stop lamp
Check continuity between BCM harness connector and ground.

BCM — Continuity

Connector Terminal

B45 160 Ground No

157

BCM	—	Continuity
B45	160	Ground	No
157

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK STOP LAMP / HIGH-MOUNTED STOP LAMP POWER SUPPLY CIRCUIT (OPEN)

Ignition switch OFF.
Disconnect the following connectors:
- BCM
- Rear combination lamp LH (body side)
- Rear combination lamp RH (body side)
- High-mounted stop lamp
Check continuity between BCM harness connector, rear combination lamp LH (body side) harness connector, rear combination lamp RH (body side) harness connector and high-mounted stop lamp harness connector.

Stop lamp
BCM Rear combination lamp (body side) Continuity

Connector Terminal Connector Terminal

RH B45 157 B413 4 Yes

LH 160 B412

High-mounted stop lamp
BCM High-mounted stop lamp Continuity

Connector Terminal Connector Terminal

B45 160 D517 2 Yes

Is the inspection result normal?

YES>>

GO TO 13.

NO>>

Repair or replace harness.

CHECK STOP LAMP / HIGH-MOUNTED STOP LAMP GROUND CIRCUIT

Check continuity between rear combination lamp LH (body side) harness connector, rear combination lamp RH (body side) harness connector, high-mounted stop lamp harness connector and ground.

Stop lamp
Rear combination lamp (body side)			—	Continuity
Connector		Terminal	—	Continuity
RH	B413	1	Ground	Yes
LH	B412	1	Ground	Yes

High-mounted stop lamp
High-mounted stop lamp		—	Continuity
Connector	Terminal	—	Continuity
D517	1	Ground	Yes

Is the inspection result normal?

YES>>

Stop lamp: Replace corresponding rear combination lamp (body side). Refer to Removal and Installation.

YES>>

High-mounted stop lamp: Replace high-mounted stop lamp. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Component Inspection

CHECK STOP LAMP SWITCH-1

Ignition switch OFF.
Disconnect stop lamp switch connector.
Check continuity between stop lamp switch terminals.

Stop lamp switch Condition Continuity

Terminal

+ –

1 2 Brake pedal Depressed Yes

Fully released No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

GO TO 2.

CHECK STOP LAMP SWITCH-2

Adjust stop lamp switch installation. Refer to Inspection.
Check continuity between stop lamp switch terminals.

Stop lamp switch Condition Continuity

Terminal

+ –

1 2 Brake pedal Depressed Yes

Fully released No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace stop lamp switch. Refer to Exploded View.

Back-Up Lamp Circuit Nissan Pathfinder SUV

Component Function Check

CHECK BACK-UP LAMP OPERATION

Start the engine.
With operating the shift selector, check that the back-up lamp is turned ON.

Shift selector position: R range : Back-up lamp ON

Shift selector position: Other than above : Back-up lamp OFF

Is the inspection result normal?

YES>>

Back-up lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK BACK-UP LAMP BULB

Ignition switch OFF.
Check the back-up lamp bulb.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace corresponding back-up lamp bulb. Refer to Bulb Specifications.

CHECK BACK-UP LAMP RELAY FUSE

Check that the following fuse is not blown (open):

Unit	Location	Fuse No.	Capacity
Back-up lamp relay	IPDM E/R	71	10 A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 3.

CHECK BACK-UP LAMP RELAY POWER SUPPLY

Ignition switch ON.
Check voltage between IPDM E/R harness connector and ground.

(+) (-)
Voltage
(Approx.)

IPDM E/R

Connector Terminal

F24 71 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Replace IPDM E/R. Refer to Removal and Installation.

CHECK BACK-UP LAMP RELAY POWER SUPPLY CIRCUIT

Ignition switch OFF.
Disconnect IPDM E/R connector and back-up lamp relay connector.
Check continuity between IPDM E/R harness connector and back-up lamp relay harness connector.

Without heated steering wheel
IPDM E/R Back-up lamp relay Continuity

Connector Terminal Connector Terminal

F24 71 M93 1 Yes

3

With heated steering wheel
IPDM E/R Heated steering wheel relay and back-up lamp relay Continuity

Connector Terminal Connector Terminal

F24 71 M90 6 Yes

8

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace harness.

CHECK BACK-UP LAMP RELAY

Check back-up lamp relay. Refer to Component Inspection (Without Heated Steering Wheel) or Component Inspection (With Heated Steering Wheel).

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Replace back-up lamp relay.

CHECK BACK-UP LAMP RELAY CONTROL SIGNAL

Connect IPDM E/R connector and back-up lamp relay connector.
Start the engine.
With operating the shift selector, check voltage between BCM harness connector and ground.

(+) (-) Condition
Voltage
(Approx.)

BCM

Connector Terminal

M80 119 Ground Shift selector position R range 0 V

Except R range Battery voltage

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Fixed at 0 V: GO TO 7.

NO>>

Fixed at battery voltage: Replace BCM. Refer to Removal and Installation.

CHECK BACK-UP LAMP RELAY CONTROL SIGNAL CIRCUIT

Ignition switch OFF.
Disconnect BCM connector and back-up lamp relay connector.
Check continuity between BCM harness connector and back-up lamp relay harness connector.

Without heated steering wheel
BCM Back-up lamp relay Continuity

Connector Terminal Connector Terminal

M80 119 M93 4 Yes

With heated steering wheel
BCM Heated steering wheel relay and back-up lamp relay Continuity

Connector Terminal Connector Terminal

M80 119 M90 9 Yes
Check continuity between BCM connector and ground.

BCM (-) Continuity

Connector Terminal

M80 119 Ground No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK BACK-UP LAMP POWER SUPPLY CIRCUIT 1

Ignition switch OFF.
Disconnect back-up lamp relay connector and rear combination lamp (back door side) connector.

Check continuity between back-up lamp relay harness connector and rear combination lamp (back door side) harness connector.

Without heated steering wheel
Back-up lamp relay			Rear combination lamp (back door side)		Continuity
Connector		Terminal	Connector	Terminal	Continuity
RH	M93	2	D564	2	Yes
LH	M93	2	D506	2	Yes

With heated steering wheel
Heated steering wheel relay and back-up lamp relay			Rear combination lamp (back door side)		Continuity
Connector		Terminal	Connector	Terminal	Continuity
RH	M90	7	D564	2	Yes
LH	M90	7	D506	2	Yes

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

Repair or replace harness.

CHECK BACK-UP LAMP GROUND CIRCUIT

Check continuity between rear combination lamp (back door side) harness connector and ground.

Rear combination lamp (back door side)			(-)	Continuity
Connector		Terminal	(-)	Continuity
RH	D564	1	Ground	Yes
LH	D506	1	Ground	Yes

Is the inspection result normal?

YES>>

Check corresponding back-up lamp bulb socket. Repair or replace if necessary.

NO>>

Repair or replace harness.

Component Inspection (Without Heated Steering Wheel)

CHECK BACK-UP LAMP RELAY

Ignition switch OFF.
Disconnect back-up lamp relay connector.
Apply battery voltage to back-up lamp relay between terminals 3 and 4.
Check continuity between back-up lamp relay terminals.

Back-up lamp relay Condition Continuity

Terminal

+ –

1 2 Battery voltage Applied Yes

Not applied No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace back-up lamp relay.

Component Inspection (With Heated Steering Wheel)

CHECK BACK-UP LAMP RELAY

Ignition switch OFF.
Disconnect back-up lamp relay connector.
Apply battery voltage to back-up lamp relay between terminals 8 and 9.
Check continuity between back-up lamp relay terminals.

Heated steering wheel relay and back-up lamp relay Condition Continuity

Terminal

+ –

6 7 Battery voltage Applied Yes

Not applied No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace back-up lamp relay.

Front Fog Lamp Circuit Nissan Pathfinder R53

Component Function Check

CHECK FRONT FOG LAMP OPERATION

Ignition switch ON.
Turn lighting switch 2ND.
With operating the front fog lamp switch, check that the front fog lamp is turned ON.

Front fog lamp switch ON : Front fog lamp ON

Front fog lamp switch OFF : Front fog lamp OFF

Is the inspection result normal?

YES>>

Front fog lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK FRONT FOG LAMP OUTPUT VOLTAGE

Ignition switch ON.
Turn lighting switch 2ND.

With operating the front fog lamp switch, check voltage between IPDM E/R harness connector and ground.

+			-	Condition		Voltage (Approx.)
IPDM E/R
Connector		Terminal
RH	E218	57	Ground	Front fog lamp switch	ON	Battery voltage
RH	E218	57			OFF	0 V
LH	E217	51			ON	Battery voltage
LH	E217	51			OFF	0 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK FRONT FOG LAMP OUTPUT CIRCUIT (SHORT)

Disconnect IPDM E/R connector, front fog lamp LH connector and front fog lamp RH connector
Check continuity between IPDM E/R harness connector and ground.

IPDM E/R			—	Continuity
Connector		Terminal	—	Continuity
RH	E218	57	Ground	No
LH	E217	51	Ground	No

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK FRONT FOG LAMP POWER SUPPLY CIRCUIT

Ignition switch OFF.
Turn lighting switch OFF or AUTO.
Disconnect IPDM E/R connector and front fog lamp connector.
Check continuity between IPDM E/R harness connector and front fog lamp harness connector.

IPDM E/R Front fog lamp Continuity

Connector Terminal Connector Terminal

RH E218 57 E306 2 Yes

LH E217 51 E305

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK FRONT FOG LAMP GROUND CIRCUIT

Check continuity between front fog lamp harness connector and ground.

Front fog lamp			—	Continuity
Connector		Terminal	—	Continuity
RH	E306	1	Ground	Yes
LH	E305	1	Ground	Yes

Is the inspection result normal?

YES>>

Replace corresponding front fog lamp. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Turn Signal Lamp Circuit Nissan Pathfinder 2025

Component Function Check

CHECK TURN SIGNAL LAMP OPERATION

CONSULT

Ignition switch ON.
Select “FLASHER” in “Active Test” mode of "BCM(FLASHER)".
With operating the test items, check that the turn signal lamp blinks.

RH : Turn signal lamps RH blink

LH : Turn signal lamps LH blink

LH/RH : Turn signal lamps RH and LH blinks

Is the inspection result normal?

YES>>

Turn signal lamp circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SYMPTOM

Check symptom (A or B)

Symptom
A	All turn signal lamps do not blink
B	Applicable side performs high flasher activation

Which symptom is detected?

A>>

GO TO 2.

B>>

GO TO 4.

CHECK FUSE

Ignition switch OFF.
Check that the following fuse is not blown (open):

Unit Location Fuse No. Capacity

BCM Fuse block (J/B) 53 10 A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 3.

CHECK BCM POWER SUPPLY (TURN SIGNAL LAMP)

Disconnect BCM connector.
Check voltage between BCM harness connector and ground.

+ -
Voltage
(Approx)

BCM

Connector Terminal

M81 136 Ground Battery voltage

Is the inspection result normal?

YES>>

Replace BCM. Refer to Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK TURN SIGNAL LAMP BULB

Ignition switch OFF.
Check each turn signal lamp bulb.

NOTE:

Except side turn signal lamp and front turn signal lamp (LED type).

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Front turn signal lamp: Replace corresponding front turn signal lamp bulb. Refer to Bulb Replacement.

NO>>

Rear turn signal lamp: Replace corresponding rear turn signal lamp bulb. Refer to Bulb Replacement.

CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE

Ignition switch ON.

With operating the turn signal switch, check voltage between BCM harness connector and ground.

Front turn signal lamp
+			-	Condition		Voltage (Approx.)
BCM
Connector		Terminal
RH	M80	116	Ground	Turn signal switch	Right	Blinking : 0 V <–> Battery voltage
RH		116			Center	0 V
LH		128			Left	Blinking : 0 V <–> Battery voltage
LH		128			Center	0 V

Side turn signal lamp
+			-	Condition		Voltage (Approx.)
BCM
Connector		Terminal
RH	M18	1	Ground	Turn signal switch	Right	Blinking : 0 V <–> Battery voltage
RH		1			Center	0 V
LH		21			Left	Blinking : 0 V <–> Battery voltage
LH		21			Center	0 V

Rear turn signal lamp
+			-	Condition		Voltage (Approx.)
BCM
Connector		Terminal
RH	B45	159	Ground	Turn signal switch	Right	Blinking : 0 V <–> Battery voltage
RH		159			Center	0 V
LH		151			Left	Blinking : 0 V <–> Battery voltage
LH		151			Center	0 V

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK TURN SIGNAL LAMP POWER SUPPLY CIRCUIT (SHORT)

Ignition switch OFF.
Disconnect BCM connector.
Check continuity between BCM harness connector and ground.

Front turn signal lamp
BCM — Continuity

Connector Terminal

RH M80 116 Ground No

LH 128

Side turn signal lamp
BCM — Continuity

Connector Terminal

RH M18 1 Ground No

LH 21

Rear turn signal lamp
BCM — Continuity

Connector Terminal

RH B45 159 Ground No

LH 151

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK TURN SIGNAL LAMP POWER SUPPLY CIRCUIT (OPEN)

Ignition switch OFF.
Disconnect the following connectors:
- Front combination lamp LH
- Front combination lamp RH
- Rear combination lamp LH (body side) connector
- Rear combination lamp RH (body side) connector
- Door mirror LH
- Door mirror RH
- BCM
Check continuity between BCM harness connector, front combination lamp LH harness connector, front combination lamp RH harness connector, rear combination lamp LH (body side) harness connector, rear combination lamp RH (body side) harness connector, door mirror LH harness connector and door mirror RH harness connector.

Front turn signal lamp
BCM Front combination lamp Continuity

Connector Terminal Connector Terminal

RH M80 116 E250 7 Yes

LH 128 E249

Side turn signal lamp
BCM Door mirror Continuity

Connector Terminal Connector Terminal

RH M18 1 D128 5 Yes

LH 21 D28

Rear turn signal lamp
BCM Rear combination lamp (body side) Continuity

Connector Terminal Connector Terminal

RH B45 159 B413 3 Yes

LH 151 B412

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Repair or replace harness.

CHECK TURN SIGNAL LAMP GROUND CIRCUIT

Check continuity between front combination lamp LH harness connector, front combination lamp RH harness connector, rear combination lamp LH (body side) harness connector, rear combination lamp RH (body side) harness connector, door mirror LH harness connector, door mirror RH harness connector and ground.

Front turn signal lamp
Front combination lamp			—	Continuity
Connector		Terminal	—	Continuity
RH	E250	8	Ground	Yes
LH	E249	8	Ground	Yes

Side turn signal lamp
Door mirror			—	Continuity
Connector		Terminal	—	Continuity
RH	D128	4	Ground	Yes
LH	D28	4	Ground	Yes

Rear turn signal lamp
Rear combination lamp (body side)			—	Continuity
Connector		Terminal	—	Continuity
RH	B413	1	Ground	Yes
LH	B412	1	Ground	Yes

Is the inspection result normal?

YES>>

Front turn signal lamp bulb: Replace corresponding front turn signal lamp bulb. Refer to Bulb Replacement.

YES>>

Side turn signal lamp: Replace corresponding door mirror. Refer to Removal and Installation.

YES>>

Rear turn signal lamp: Replace corresponding rear turn signal lamp bulb. Refer to Bulb Replacement.

NO>>

Repair or replace harness.

Hazard Switch Circuit Nissan Pathfinder R53

Component Function Check

CHECK HAZARD SWITCH SIGNAL

CONSULT

Ignition switch ON.
Select “HAZARD SW” in “Data Monitor” mode of "BCM(FLASHER)".
With operating the hazard switch, check the monitor status.

Monitor item Condition Monitor status

HAZARD SW Hazard switch ON On

OFF Off

Is the inspection result normal?

YES>>

Hazard switch circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK HAZARD SWITCH SIGNAL

Ignition switch OFF.
Disconnect hazard switch connector.
Check voltage between hazard switch harness connector and ground.

+ -
Voltage
(Approx.)

Hazard switch

Connector Terminal

M26 2 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK HAZARD SWITCH SIGNAL CIRCUIT (OPEN)

Disconnect BCM connector.
Check continuity between hazard switch harness connector and BCM harness connector.

Hazard switch BCM Continuity

Connector Terminal Connector Terminal

M26 2 M18 13 Yes

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK HAZARD SWITCH SIGNAL CIRCUIT (SHORT)

Check continuity between hazard switch harness connector and ground.

Hazard switch		—	Continuity
Connector	Terminal	—	Continuity
M26	2	Ground	No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK HAZARD SWITCH GROUND CIRCUIT

Check continuity between hazard switch harness connector and ground.

Hazard switch		—	Continuity
Connector	Terminal	—	Continuity
M26	3	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace harness.

CHECK HAZARD SWITCH

Check hazard switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace hazard switch. Refer to Removal and Installation.

Component Inspection

CHECK HAZARD SWITCH

Ignition switch OFF.
Disconnect hazard switch connector.
Check continuity between hazard switch terminals.

Hazard switch Condition Continuity

Terminal

+ –

2 3 Hazard switch ON Yes

OFF No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace hazard switch. Refer to Removal and Installation.

Squeak and Rattle Trouble Diagnoses ++Power Outlet

Nissan Pathfinder (R53) 2022-2025 Service Manual

Contact Us

Nissan Pathfinder Info Center

Email: info@nipathfinder.com

Phone: +1 (800) 123-4567

Address: 123 Pathfinder Blvd, Nashville, TN 37214, USA

Working Hours: Mon–Fri, 9:00 AM – 5:00 PM (EST)

Lighting switch 1ST	: Front side marker lamp ON
Lighting switch OFF or AUTO*	: Front side marker lamp OFF

Lighting switch 1ST	: Tail Lamp ON
Lighting switch OFF or AUTO*	: Tail lamp OFF

Lighting switch 1ST	: License plate lamp ON
Lighting switch OFF or AUTO*	: License plate lamp OFF

Lighting switch 1ST	: Rear side marker lamp ON
Lighting switch OFF or AUTO*	: Rear side marker lamp OFF

Depressed	: Stop lamp and high-mounted stop lamp ON
Fully released	: Stop lamp and high-mounted stop lamp OFF

Stop lamp switch		Fuse block (J/B)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E38	1	E28	2R	Yes

Stop lamp switch		Condition		Continuity
Terminal
+	–
1	2	Brake pedal	Depressed	Yes
1	2	Brake pedal	Fully released	No

Shift selector position: R range	: Back-up lamp ON
Shift selector position: Other than above	: Back-up lamp OFF

Back-up lamp relay		Condition		Continuity
Terminal
+	–
1	2	Battery voltage	Applied	Yes
1	2	Battery voltage	Not applied	No

Front fog lamp switch ON	: Front fog lamp ON
Front fog lamp switch OFF	: Front fog lamp OFF

RH	: Turn signal lamps RH blink
LH	: Turn signal lamps LH blink
LH/RH	: Turn signal lamps RH and LH blinks

Nissan Pathfinder: Exterior Lighting System - Dtc/circuit Diagnosis

B121a-11 Fr Fog Lamp Lh Pwr Sply Circ Nissan Pathfinder Fifth generation

DTC Description

DTC Diagnosis Procedure

Component Inspection

B20a4-87 Headlamp (lh) Lin Communication Nissan Pathfinder 5th Gen

DTC Description

DTC Diagnosis Procedure

B20d4-11 Tail Lamp Lh Pwr Sply Circ Nissan Pathfinder

DTC Description

DTC Diagnosis Procedure

Component Inspection (Tail Lamp)

Component Inspection (License Plate Lamp)

Component Inspection (Front Side Marker Lamp)

Component Inspection (Rear Side Marker Lamp)

B20e3-96 Led Headlamp Lh Nissan Pathfinder Fifth generation

DTC Description

DTC Diagnosis Procedure

Front Side Marker Lamp Circuit Nissan Pathfinder 2022

Component Function Check

Diagnosis Procedure

Tail Lamp Circuit Nissan Pathfinder Fifth generation

Component Function Check

Diagnosis Procedure

License Plate Lamp Circuit Nissan Pathfinder 2022

Component Function Check

Diagnosis Procedure

Rear Side Marker Lamp Circuit Nissan Pathfinder 5th Gen

Component Function Check

Diagnosis Procedure

Stop Lamp Circuit Nissan Pathfinder Fifth generation

Component Function Check

Diagnosis Procedure

Component Inspection

Back-Up Lamp Circuit Nissan Pathfinder SUV

Component Function Check

Diagnosis Procedure

Component Inspection (Without Heated Steering Wheel)

Component Inspection (With Heated Steering Wheel)

Front Fog Lamp Circuit Nissan Pathfinder R53

Component Function Check

Diagnosis Procedure

Turn Signal Lamp Circuit Nissan Pathfinder 2025

Component Function Check

Diagnosis Procedure

Hazard Switch Circuit Nissan Pathfinder R53

Component Function Check

Diagnosis Procedure

Component Inspection

Nissan Pathfinder (R53) 2022-2025 Service Manual

Dtc/circuit Diagnosis

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