Rear Lifting Sensor Circuit Inspection

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REAR LIFTING SENSOR INPUT/OUTPUT SIGNAL

With CONSULT-III

Check operation with "LIFT RR PULSE" on the DATA MONITOR to make sure pulse changes.

LIFT RR PULSE MONITOR ITEM CHART

Monitor item [OPERATION or UNIT]		Contents
LIFT RR PULSE	-	The rear lifting position (pulse) judged from the rear lifting sensor is displayed.

Without CONSULT-III

Turn ignition switch OFF.

Check signal between driver seat control unit connector and ground, with oscilloscope.

DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND

Connector	Terminals		Condition	Signal
Connector	(+)	(-)	Condition	Signal
B401	10	Ground	Rear lifting motor operation	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 1: Checking Signal Between Driver Seat Control Unit Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Rear lifting sensor circuit is OK.

NG: GO TO 2.

CHECK REAR LIFTING SENSOR HARNESS CONTINUITY 1
1. Disconnect driver seat control unit and rear lifting motor.
2. Check continuity between driver seat control unit connector B401 (A) terminals 16, 31 and rear lifting motor connector B407 (B) terminals 3, 6.
  16 - 6: Continuity should exist.
  
  31 - 3: Continuity should exist.
3. Check continuity between driver seat control unit connector B401 (A) terminals 16, 31 and ground.
  16 - Ground: Continuity should not exist.
  
  31 - Ground: Continuity should not exist.
Fig 2: Checking Rear Lifting Sensor Harness Continuity 1
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Repair or replace harness.
CHECK REAR LIFTING SENSOR HARNESS CONTINUITY 2
1. Check continuity between driver seat control unit connector B401 (A) terminal 10 and rear lifting motor connector B407 (B) terminal 5.
  10 - 5: Continuity should exist.
2. Check continuity between driver seat control unit connector B401 (A) terminal 10 and ground.
  10 - Ground: Continuity should not exist.
Fig 3: Checking Rear Lifting Sensor Harness Continuity 2
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace rear lifting motor. Refer to "FRONT SEAT ".

NG: Repair or replace harness.