Lifting Sensor (Rear) Circuit Inspection

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REAR END LIFTING SENSOR INPUT/OUTPUT SIGNAL
With CONSULT-II

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

Fig 1: Monitor Item Contents Chart - Lift RR Pulse
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: CONSULT-II Display - DATA MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II
1. Turn ignition switch OFF.
2. Check signal between driver seat control unit connector and ground, with oscilloscope.
  
  Fig 3: Driver Seat Control Unit Connector P2 Terminal Signal Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Signal Between Driver Seat Control Unit Connector Terminal 10 & 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 CIRCUIT HARNESS CONTINUITY
1. Disconnect driver seat control unit and lifting motor (rear).
2. Check continuity between driver seat control unit connector P2 terminals 10, 16, 31 and lifting motor (rear) connector P7 terminals 1, 2, 3.
  10 (L/Y) - 2 (L/Y) : Continuity should exist.
  
  16 (L) - 3 (L) : Continuity should exist.
  
  31 (Y) - 1 (Y) : Continuity should exist.
3. Check continuity between driver seat control unit connector P2 terminals 10, 16, 31 and ground.
  10 (L/Y) - Ground : Continuity should not exist.
  
  16 (L) - Ground : Continuity should not exist.
  
  31 (Y) - Ground : Continuity should not exist.
OK or NG
- OK : Replace lifting motor (rear). Refer to FRONT SEAT .
- NG : Repair or replace harness.