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

Check if any of the following fuses are blown.

Signal name	Fuse No.
Battery power supply	68 (15A)

Is the fuse blown?

YES

Replace the blown fuse after repairing the affected circuit.

GO TO 2.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (LH) POWER SUPPLY

Turn the ignition switch OFF.
Disconnect climate controlled seat control unit (LH) connector.
Turn the ignition switch ON.

Check voltage between climate controlled seat control unit (LH) harness connector and ground.

(+)		(-)	Voltage (V) (Approx.)
Climate controlled seat control unit (LH)
Connector	Terminal
B201	1	Ground	Battery voltage
	14

Is the inspection result normal?

YES

GO TO 7.

GO TO 3.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (LH) POWER SUPPLY CIRCUIT

Turn the ignition switch OFF.
Disconnect climate controlled seat relay.

Check continuity between climate controlled seat control unit (LH) harness connector and climate controlled seat relay harness connector.

Climate controlled seat control unit (LH)		Climate controlled seat relay		Continuity
Connector	Terminal	Connector	Terminal
B201	1	M58	6	Yes
	14

Check continuity between climate controlled seat control unit (LH) harness connector and ground.

Climate controlled seat control unit (LH)		Ground	Continuity
Connector	Terminal
B201	1		No
	14

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness or connector.

CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT

Turn the ignition switch ON.

Check voltage between climate controlled seat relay harness connector and ground.

(+)		(-)	Voltage (V) (Approx.)
Climate controlled seat relay
Connector	Terminal
M58	2	Ground	Battery voltage
	7

Is the inspection result normal?

YES

GO TO 5.

Repair or replace harness or connector.

CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT

Turn the ignition switch OFF.

Check continuity between climate controlled seat relay harness connector and ground.

Climate controlled seat relay		Ground	Continuity
Connector	Terminal
M58	1		Yes

Is the inspection result normal?

YES

GO TO 6.

Repair or replace harness.

CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 7.

NO

Replace climate controlled seat relay.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (LH) GROUND CIRCUIT

Turn the ignition switch OFF.

Check continuity between climate control unit (LH) harness connector and ground.

Climate controlled seat control unit (LH)		Ground	Continuity
Connector	Terminal
B201	13		Yes
	26

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

Repair or replace harness or connector.