Nissan Pathfinder: Power Outlet - Dtc/circuit Diagnosis

• Power Supply and Ground Circuit
• Ac 120 V Power Output Circuit

Power Supply and Ground Circuit Nissan Pathfinder 2022

Diagnosis Procedure

CHECK FUSES

Check that the following fuses are not blown:

Signal name	Fuse No.	Capacity
Battery power supply	89	20 A
Ignition power supply	4	10 A

Is the fuse blown?

YES>>

Replace the blown fuse after repairing the affected circuit.

NO>>

GO TO 2.

CHECK INVERTER UNIT POWER SUPPLY CIRCUIT

1. Disconnect inverter unit connector.

2. Check voltage between inverter unit harness connector and ground.

   (+)		(-)	Voltage (Approx.)
   Inverter unit
   Connector	Terminal
   B121	4	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace the inverter unit power supply circuit.

CHECK INVERTER UNIT GROUND CIRCUIT

Check continuity between inverter unit harness connector and ground.

Inverter unit		—	Continuity
Connector	Terminal
B121	8	Ground	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Repair or replace the inverter unit ground circuit.

Ac 120 V Power Output Circuit Nissan Pathfinder 2025

Diagnosis Procedure

CHECK HARNESS BETWEEN INVERTER UNIT AND AC 120 V OUTLET

1. Ignition switch OFF.

2. Disconnect inverter unit and AC 120 V outlet connectors.

3. Check continuity between inverter unit harness connector and AC 120 V outlet harness connector.

   Inverter unit		AC 120 V outlet		Continuity
   Connector	Terminal	Connector	Terminal
   B121	5	M88	1	Yes
   	1		4

4. Check continuity between inverter unit harness connector and ground.

   Inverter unit		—	Continuity
   Connector	Terminal
   B121	5	Ground	No
   	1

5. Check continuity between inverter unit harness connector.

   Inverter unit			Continuity
   Connector	Terminals
   B121	5	1	No

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace the harness or connectors.

CHECK INVERTER UNIT OUTPUT SIGNAL

1. Connect inverter unit and AC 120 V outlet connector.

2. Ignition switch ON.

3. Check voltage between inverter unit harness connector.

   CAUTION:

   • To measure AC 120 V output signal, always use the circuit tester AC range.

   • Never allow the probes to contact each other.

   Inverter unit		Condition	Voltage (Approx.)
   Terminals
   (+)	(-)	Ignition ON.
   5	1	OFF	0 V
   		ON	AC 120 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace inverter unit.

CHECK AC 120V OUTLET VOLTAGE

Check voltage between AC 120 V outlet.

CAUTION:

• To measure AC 120 V output signal, always use the circuit tester AC range.

• Never allow the probes to contact each other.

AC 120 V outlet		Condition	Voltage (Approx.)
Terminals
(+)	(-)	Ignition ON.
1	4	OFF	0 V
		ON	AC 120 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Replace AC 120 V outlet.

CHECK AC 120V OUTLET GROUND CIRCUIT

1. Ignition switch OFF.

2. Disconnect AC 120 V outlet connector.

3. Check continuity between AC 120 V outlet harness connector and ground.

   AC 120V outlet		—	Continuity
   Connector	Terminal
   M88	3	Ground	Yes

Is the inspection result normal?

YES>>

Replace AC 120 V outlet.

NO>>

Repair AC 120 V outlet ground circuit.