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 HARNESS BETWEEN INVERTER UNIT AND AC 120V OUTLETS

Turn ignition switch OFF.
Disconnect inverter unit connector B2, AC 120V outlet (console) connector M138 and rear AC 120V outlet (bed) connector C55.

Check continuity between inverter unit connector B2 and AC 120V outlet (console) connector M138.

Inverter unit		AC 120V outlet (console)		Continuity
Connector	Terminal	Connector	Terminal
B2	1	M138	1	Yes
	7		4

Check continuity between inverter unit connector B2 and rear AC 120V outlet (bed) connector C55.

Inverter unit		Rear AC 120V outlet (bed)		Continuity
Connector	Terminal	Connector	Terminal
B2	1	C55	1	Yes
	7		2

Check continuity between inverter unit connector B2 and ground.

Inverter unit		Ground	Continuity
Connector	Terminal
B2	1	-	No
	7

Check continuity between inverter unit connector B2 terminals 1 and 7.

Inverter unit			Continuity
Connector	Terminal
B2	1	7	No

Is the inspection result normal?

YES

GO TO 2.

Repair or replace the harness or connectors.

CHECK INVERTER UNIT OUTPUT SIGNAL

Connect inverter unit connector B2, AC 120V outlet (console) connector M138 and rear AC 120V outlet (bed) connector C55.
Turn ignition switch ON.
Turn the AC 120V outlet main switch ON (AC 120V outlet main switch 150W indicator ON).

Check voltage between inverter unit connector B2 terminals 1 and 7.

CAUTION:

To measure AC 120V output signal, always use the circuit tester AC range.
Never allow the probes to contact each other.

(+)	(-)	Condition	Voltage (Approx.)
Inverter unit connector B2		AC 120V outlet main switch
Terminal
1	7	All indicators OFF	0V
		150W indicator ON	AC 120V

Is the inspection result normal?

YES

GO TO 3 .

Replace inverter unit. Refer to Removal and Installation .

CHECK AC 120V OUTLET (CONSOLE) VOLTAGE

AC 120V outlet main switch ON (AC 120V outlet main switch 150W indicator ON).

Check voltage between AC 120V outlet front M138 terminals 1 and 4.

CAUTION:

To measure AC 120V output signal, always use the circuit tester AC range.
Never allow the probes to contact each other.

(+)	(-)	Condition	Voltage (Approx.)
AC 120V outlet (console) connector M138		AC 120V outlet main switch
Terminal
1	4	OFF	0V
		ON	AC 120V

Is the inspection result normal?

YES

GO TO 4 .

Replace AC 120V outlet front. Refer to Removal and Installation - Front .

CHECK AC 120V OUTLET (CONSOLE) GROUND CIRCUIT

AC 120V outlet main switch OFF.
Turn ignition switch OFF.
Disconnect AC 120V outlet front connector.

Check continuity between AC 120V outlet front connector M138 terminal 3 and ground.

AC 120V outlet (console)		Ground	Continuity
Connector	Terminal
M138	3	-	Yes

Is the inspection result normal?

YES

GO TO 5 .

Repair AC 120V outlet (console) ground circuit.

CHECK REAR AC 120V OUTLET (BED) VOLTAGE

Turn ignition switch ON.
AC 120V outlet main switch ON (AC 120V outlet main switch 150W indicator ON).

Check voltage between rear AC 120V outlet (bed) C55 terminals 1 and 2.

CAUTION:

To measure AC 120V output signal, always use the circuit tester AC range.
Never allow the probes to contact each other.

(+)	(-)	Condition	Voltage (Approx.)
Rear AC 120V outlet (bed) connector C55		AC 120V outlet main switch
Terminal
1	2	OFF	0V
		ON	AC 120V

Is the inspection result normal?

YES

GO TO 6 .

Replace rear AC 120V outlet (bed). Refer to Removal and Installation - Rear .

CHECK REAR AC 120V OUTLET (BED) GROUND CIRCUIT

Turn the AC 120V outlet main switch OFF.
Turn ignition switch OFF.
Disconnect rear AC 120V outlet (bed) connector C55.

Check continuity between rear AC 120V outlet (bed) connector C55 and ground.

Rear AC 120V outlet (bed)		Ground	Continuity
Connector	Terminal
C55	3	-	Yes

Is the inspection result normal?

YES

Inspection End.

Repair rear AC 120V outlet (bed) ground circuit.