Lifting Sensor (Front) Circuit Inspection

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUNCTION

With CONSULT-II

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

CHECK FUNCTION

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

Without CONSULT-II

Fig 1: Display DATA MONITOR

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

Turn ignition switch OFF.
Check signal between driver seat control unit connector and ground, with oscilloscope.

Fig 2: Checking Signal Between Driver Seat Control Unit Connector & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Front lifting sensor is OK.
NG: GO TO 2.

CHECK FRONT LIFTING SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect driver seat control unit and lifting motor (front).
2. Check continuity between driver seat control unit connector P2 terminals 16 (L)5 25 (R/L), 31 (Y) and lifting motor (front) connector P6 terminals 1 (Y), 2 (R/L), 3 (L).
  1. 16 (L) - 3 (L): Continuity should exist.
  2. 25 (R/L) - 2 (R/L): Continuity should exist.
  3. 31 (Y) -1 (Y): Continuity should exist.
  Fig 3: Checking Continuity Between Driver Seat Control Unit Connector & Lifting Motor (Front) Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between driver seat control unit connector P2 terminals 25 (Y/B), 31 (R/W) and ground.
  1. 25 (R/L) - Ground: Continuity should not exist.
  Fig 4: Checking Continuity Between Driver Seat Control Unit Connector & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  1. OK: Replace lifting motor (front).
  2. NG: Repair or replace harness.