Diagnosis Procedure

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

CHECK A/C SWITCH ASSEMBLY POWER SUPPLY

Disconnect the A/C switch assembly connector.
Turn ignition switch ON.

Check voltage between A/C switch assembly harness connector and ground.

(+)		(-)	Voltage
A/C switch assembly		-	Ignition switch position
Connector	Terminal		OFF	ACC	ON
M104	12	Ground	Approx. 0V	Approx. 0V	Battery voltage

Is the inspection result normal?

YES

GO TO 3 .

GO TO 2

CHECK FUSE
Check 10A fuse [No. 30, located in the fuse block (J/B)].

NOTE: Refer to the appropriate Wiring Diagram [Fuse Block - Junction Box (J/B)].

Is the inspection result normal?

YES

Check harness for open circuit. Repair or replace if necessary.

NO

Check harness for short circuit. Repair or replace if necessary.

CHECK A/C SWITCH ASSEMBLY GROUND CIRCUIT

Turn ignition switch OFF.

Check continuity between A/C switch assembly harness connector and ground.

A/C switch assembly		-	Continuity
Connector	Terminal
M104	1	Ground	Yes

Is the inspection result normal?

YES

Replace the A/C switch assembly. Refer to Removal and Installation .

Repair the harnesses or connectors.