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 SLIDING SENSOR SIGNAL

Turn ignition switch ON.

Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.

(+)		(-)	Condition		Voltage signal
Driver's seat control unit
Connector	Terminal
B222	31	Ground	Seat sliding	Operate	Courtesy of NISSAN NORTH AMERICA, INC.
				Other than above	0 or 5V

Is the inspection result normal?

YES

Replace driver seat control unit. Refer to Removal and Installation .

GO TO 2.

CHECK SLIDING SENSOR CIRCUIT

Turn ignition switch OFF.
Disconnect driver seat control unit and sliding motor LH.

Check continuity between driver seat control unit harness connector and sliding motor LH harness connector.

Driver seat control unit		Sliding motor LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B222	31	B226	3	Yes

Check continuity between driver seat control unit harness connector and ground.

Driver seat control unit		Ground	Continuity
Connector	Terminal
B222	31		No

Is the inspection result normal?

YES

GO TO 3

Repair or replace harness.

CHECK SLIDING SENSOR POWER SUPPLY

Connect driver seat control unit.
Turn ignition switch ON.

Check voltage between sliding motor LH harness connector and ground.

(+)		(-)	Voltage (V) (Approx.)
Sliding motor LH
Connector	Terminal
B226	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 5

GO TO 4

CHECK SLIDING SENSOR POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect driver seat control unit.

Check continuity between driver seat control unit harness connector and sliding motor LH harness connector.

Driver seat control unit		Sliding motor LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B222	5	B226	1	Yes

Check continuity between driver seat control unit harness connector and ground.

Driver seat control unit		Ground	Continuity
Connector	Terminal
B222	5		No

Is the inspection result normal?

YES

Replace driver seat control unit. Refer to Removal and Installation .

Repair or replace harness.

CHECK SLIDING SENSOR GROUND

Turn ignition switch OFF.

Check continuity between sliding motor LH harness connector and ground.

Sliding motor LH		Ground	Continuity
Connector	Terminal
B226	2		Yes

Is the inspection result normal?

YES

Replace sliding motor LH. Refer to Removal and Installation .

Repair or replace harness.