Diagnosis Procedure

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 FUSES

Check for blown fuses.

Power source	Fuse No.	Capacity
Battery	15	15 A
ACC	65	10 A

Are the fuses blown?

YES

Replace the blown fuse after repairing the affected circuit.

GO TO 2.

CHECK VIDEO DISTRIBUTOR POWER SUPPLY CIRCUIT

Check voltage between video distributor connector and ground.

Probe			Reference value (Approx.)
+		-
Video distributor
Connector	Terminal
M156	1	Ground	Battery voltage
	21

Is the inspection result normal?

YES

GO TO 3.

Repair video distributor power supply circuit.

CHECK VIDEO DISTRIBUTOR ACC POWER SUPPLY CIRCUIT

Turn ignition switch ACC.
Check voltage between video distributor connector and ground.

Probe			Reference value (Approx.)
+		-
Video distributor
Connector	Terminal
M156	22	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

Repair video distributor ACC power supply circuit.

CHECK VIDEO DISTRIBUTOR GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect video distributor connector M156.

Check the continuity between video distributor connector and ground.

Video distributor		Ground	Continuity
Connector	Terminal
M156	3		Yes
	23

	28

Is the inspection result normal?

YES

Inspection End.

Repair video distributor ground circuit.