Diagnosis Procedure: LH

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 FUSE

Check if any of the following fuses are blown.

Signal name	Fuse No.
Battery power supply	61 (15A)
IGN power supply	30 (10A)

Are the fuses blown?

YES

Replace the blown fuse after repairing the affected circuit.

GO TO 2.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT LH POWER SUPPLY

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

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

(+)		(-)	Voltage (Approx.)
Climate controlled seat control unit LH
Connector	Terminal
B217	26	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 7.

GO TO 3.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT LH POWER SUPPLY CIRCUIT

Turn 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	Continuity
B217	26	M58	3	Yes

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

Climate controlled seat control unit LH		Ground	Continuity
Connector	Terminal
B217	26		No

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness or connector.

CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT

Turn ignition switch ON.

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

(+)		(-)	Voltage (Approx.)
Climate controlled seat relay
Connector	Terminal
M58	2	Ground	Battery voltage
	5

Is the inspection result normal?

YES

GO TO 5.

Repair or replace harness or connector.

CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT

Turn 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 ignition switch OFF.

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

Climate controlled seat control unit LH		Ground	Continuity
Connector	Terminal
B217	28		Yes

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

Repair or replace harness or connector.