Exterior Lighting System (Circuit Diagnosis)

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PARKING LAMP FUSES

Turn the ignition switch OFF.
Check that the following fuses are not blown.

Unit	Location	Fuse No.	Capacity
Parking lamps	IPDM E/R	51	10 A
Parking lamps	IPDM E/R	52	10 A

Is the fuse blown?

YES

Replace the blown fuse after repairing the affected circuit.

GO TO 2.

CHECK TAIL LAMP RELAY OUTPUT (VOLTAGE)

Disconnect the front combination lamp connectors, rear combination lamp (body and back door side) connectors and license plate lamp connectors.
Turn the ignition switch ON.
Turn the parking lamps ON.

With the parking lamps ON, check voltage between the front combination lamp connector and ground.

Front parking lamp and front side marker lamp

(+)			(-)	Voltage (Approx.)
Connector		Terminal
LH	E233	8	Ground	Battery voltage
RH	E238

With the parking lamps ON, check voltage between the rear combination lamp (body side) connector and ground.

Tail lamp

(+)			(-)	Voltage (Approx.)
Connector		Terminal
LH	B406	2	Ground	Battery voltage
RH	B407

With the parking lamps ON, check voltage between the rear combination lamp (back door side) connector and ground.

Rear side marker lamp

(+)			(-)	Voltage (Approx.)
Connector		Terminal
LH	D566	7	Ground	Battery voltage
RH	D565

With the parking lamps ON, check voltage between the license plate lamp connector and ground

(+)			(-)	Voltage (Approx.)
Connector		Terminal
LH	D561	2	Ground	Battery voltage
RH	D562

Are the inspection results normal?

YES

GO TO 4.

GO TO 3.

CHECK PARKING LAMP CIRCUIT (OPEN)

Turn the ignition switch OFF.
Disconnect IPDM E/R connectors E218 and E121.

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

Front parking lamp and front side marker lamp

IPDM E/R		Front combination lamp			Continuity
Connector	Terminal	Connector		Terminal
E218	90	LH	E233	8	Yes
		RH	E238

Check continuity between the IPDM E/R harness connector and the rear combination lamp (body side) harness connector.

Tail lamp

IPDM E/R			Rear combination lamp (body side)		Continuity
Connector		Terminal	Connector	Terminal
LH	E121	10	B406	2	Yes
RH		9	B407

Check continuity between the IPDM E/R harness connector and the rear combination lamp (back door side) harness connector.

Rear side marker lamp

IPDM E/R			Rear combination lamp (back door side)		Continuity
Connector		Terminal	Connector	Terminal
LH	E121	10	D566	7	Yes
RH		9	D565

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

IPDM E/R			License plate lamp		Continuity
Connector		Terminal	Connector	Terminal
LH	E121	10	D561	2	Yes
RH			D562

Are the inspection results normal?

YES

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

Repair or replace the harness or connector.

CHECK PARKING LAMP GROUND CIRCUITS

Disconnect the front combination lamps, rear combination lamps, side marker lamps and license plate lamps harness connectors.

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

Front parking and side marker lamp

(+)			(-)	Continuity
Connector		Terminal
LH	E233	3	Ground	Yes
RH	E238

Check continuity between the rear combination lamp (body side) harness connector and ground.

Tail lamp

(+)			(-)	Continuity
Connector		Terminal
LH	B406	3	Ground	Yes
RH	B407

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

Rear side marker lamp

(+)			(-)	Continuity
Connector		Terminal
LH	D566	6	Ground	Yes
RH	D565

Check continuity between the license plate lamp harness connector and ground.

(+)			(-)	Continuity
Connector		Terminal
LH	D561	1	Ground	Yes
RH	D562

Are the inspection results normal?

YES

Check corresponding lamp socket and harness.

Repair or replace the harness or connector.