Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PARKING LAMP OPERATION
Check that the parking lamp is turned ON.

Is the inspection result normal?

YES

GO TO 2 .

NO

Check parking lamp circuit. Refer to Component Function Check .

CHECK TAIL LAMP FUSE

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

Unit	Location	Fuse No.	Capacity
Tail lamp RH	IPDM E/R	43	10A
Tail lamp LH

Is the inspection result normal?

YES

GO TO 3 .

Replace the blown fuse after repairing the affected circuit.

CHECK TAIL LAMP OUTPUT VOLTAGE

CONSULT

Disconnect rear combination lamp RH or LH connector.
Turn ignition switch ON.
Select "EXTERNAL LAMPS" in "Active Test" mode of "IPDM E/R".
While operating the test items, check voltage between applicable rear combination lamp harness connector and ground.

(+)			(-)	Test item		Voltage (Approx.)
Rear combination lamp
Connector		Terminal
RH	C14	6	Ground	EXTERNAL LAMPS	TAIL	Battery voltage
					Off	0 V
LH	C13				TAIL	Battery voltage
					Off	0 V

Is the inspection result normal?

YES

GO TO 6 .

GO TO 4 .

CHECK TAIL LAMP POWER SUPPLY CIRCUIT (SHORT)

Disconnect IPDM E/R connector E121 and rear combination lamp RH or LH connector C14 or C15.

Check continuity between IPDM E/R harness connector E121 and ground.

(+)		(-)	Continuity
IPDM E/R
Connector	Terminal
	28	Ground	No

Is the inspection result normal?

YES

GO TO 5.

Repair or replace the harness or connector.

CHECK TAIL LAMP POWER SUPPLY CIRCUIT (OPEN)

Turn ignition switch OFF.
Disconnect IPDM E/R connector E121 and rear combination lamp connector C13 and C14.

Check continuity between IPDM E/R harness connector E121 and rear combination lamp harness connector C13 and C14.

Rear combination lamp		IPDM E/R		Continuity
Connector	Terminal	Connector	Terminal
RH	6		28	Yes
LH

Is the inspection result normal?

YES

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

Repair or replace the harness or connector.

CHECK TAIL LAMP GROUND CIRCUIT

Check continuity between rear combination lamp harness connector C13, C14, and ground.

Rear combination lamp		Ground	Continuity
Connector	Terminal
RH	5		Yes
LH

Is the inspection result normal?

YES

Replace tail lamp bulb. Refer to Bulb Replacement .

Repair or replace the harness or connector.