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 FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 53, located in IPDM E/R).
  NOTE: Refer to appropriate wiring information .
Is the inspection result normal?

YES

GO TO 2.

NO

Replace the blown fuse after repairing the affected circuit.

CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT

Disconnect compressor connector and IPDM E/R connector.

Check continuity between compressor harness connector and IPDM E/R harness connector.

Compressor		IPDM E/R		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F3	1	F19	56	Yes

Is the inspection result normal?

YES

GO TO 3.

Repair harness or connector.

CHECK MAGNET CLUTCH GROUND CIRCUIT

Check continuity between compressor harness connector and ground.

Compressor		Continuity
Connector	Terminal	Continuity
F3	2	Ground	Yes

Is the inspection result normal?

YES

GO TO 4.

Repair harness or connector.

CHECK MAGNET CLUTCH
Directly apply battery voltage to the magnet clutch. Check operation visually and by sound.

Does it operate normally?

YES

Replace IPDM E/R. Refer to Removal and Installation .

NO

Replace magnet clutch. Refer to Removal and Installation of Compressor Clutch .