Diagnosis Procedure: Defogger

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 DOOR MIRROR DEFOGGER FUSE

Check if the following fuse in fuse block (J/B) is blown.

COMPONENT PARTS	AMPERE	FUSE NO.
Fuse block (J/B)	10 A	22

Is the inspection result normal?

YES

GO TO 2.

Replace the blown fuse after repairing the affected circuit.

CHECK DOOR MIRROR DEFOGGER CIRCUIT

Turn ignition switch OFF.
Disconnect the following harness connectors.
- Fuse block (J/B) connector M4
- Door mirror LH D4 (without around view monitor), D6 (with around view monitor)
- Door mirror RH D107 (without around view monitor), D116 (with around view monitor)

Check continuity between fuse block (J/B) harness connector and door mirror defogger harness connectors.

Fuse block (J/B) Connector	Terminal	Door mirror Connectors	Terminal	Continuity
M4	5P	D4 (LH without around view monitor)	1	Yes
		D107 (RH without around view monitor)
		D6 (LH with around view monitor)	7
		D116 (RH with around view monitor)

Check continuity between fuse block (J/B) harness connector M4 terminal 5P and ground.

Fuse block (J/B)

connector

Terminal

Ground

Continuity

Is the inspection result normal?

YES

GO TO 3.

Repair or replace harness.

CHECK DOOR MIRROR DEFOGGER
Check door mirror LH.

Refer to Component Function Check (without around view monitor) or Component Function Check (with around view monitor).

Check door mirror RH.

Refer to Component Function Check (without around view monitor) or Component Function Check (with around view monitor).

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

Repair or replace the malfunctioning parts.