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 CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY

Turn ignition switch ON.

Check voltage between climate controlled seat blower motor assembly harness connector and ground.

(+)			(-)	Condition		Voltage (Approx.)
Climate controlled seat blower motor assembly
Connector		Terminal
LH	B206	8	Ground	Climate controlled seat switch	HEAT mode	Battery voltage
					COOL mode
					Other than above	0
RH	B317			Climate controlled seat switch	HEAT mode	Battery voltage
					COOL mode
					Other than above	0

Is the inspection result normal?

YES

GO TO 3.

GO TO 2.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect climate controlled seat blower motor assembly connector and climate controlled seat control unit connector.

Check continuity between climate controlled seat blower motor assembly harness connector and climate controlled seat control unit harness connector.

Climate controlled seat blower motor assembly			Climate controlled seat control unit		Continuity
Connector		Terminal	Connector	Terminal
LH	B206	8	B216	12	Yes
RH	B317		B312

Check continuity between climate controlled seat blower motor assembly harness connector and ground.

climate controlled seat blower motor assembly			Ground	Continuity
Connector		Terminal
LH	B206	8		No
RH	B317

Is the inspection result normal?

YES

Replace climate controlled seat control unit. Refer to Climate Controlled Seat Control Unit .

Repair or replace harness.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL

Check voltage between climate controlled seat blower motor assembly harness connector and ground.

(+)			(-)	Condition			Voltage (Approx.)
Climate controlled seat blower motor assembly
Connector		Terminal
LH	B206	7	Ground	Climate controlled seat switch	HEAT		8.5 - 9
					COOL	HI	Battery voltage
						MID	9.0
						LO	8.0
					Other than above		0
RH	B317			Climate controlled seat switch	HEAT		8.5 - 9
					COOL	HI	Battery voltage
						MID	9.0
						LO	8.0
					Other than above		0

Is the inspection result normal?

YES

GO TO 5.

GO TO 4.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect climate controlled seat blower motor assembly connector and climate controlled seat control unit connector.

Check continuity between climate controlled seat blower motor assembly harness connector and climate controlled seat control unit harness connector.

Climate controlled seat blower motor assembly			Climate controlled seat control unit		Continuity
Connector		Terminal	Connector	Terminal
LH	B206	7	B216	4	Yes
RH	B317		B312

Check continuity between climate controlled seatback blower motor harness connector and ground.

Climate controlled seat blower motor assembly			Ground	Continuity
Connector		Terminal
LH	B206	7		No
RH	B317

Is the inspection result normal?

YES

Replace climate controlled seat control unit. Refer to Climate Controlled Seat Control Unit .

Repair or replace harness.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect climate controlled seat blower motor assembly and climate controlled seat control unit connector.

Check continuity between climate controlled seat blower motor assembly harness connector and climate controlled seat control unit harness connector.

Climate controlled seat blower motor assembly			Climate controlled seat control unit		Continuity
Connector		Terminal	Connector	Terminal
LH	B206	6	B216	20	Yes
RH	B317		B312

Check continuity between climate controlled seatback blower motor harness connector and ground.

climate controlled seat blower motor assembly			Ground	Continuity
Connector		Terminal
LH	B206	6		No
RH	B317

Is the inspection result normal?

YES

Replace climate controlled seat blower motor assembly. Refer to Climate Controlled Seat Blower Assembly .

Repair or replace harness.