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Rear Lifting Sensor Circuit Check

  1. CHECK REAR END LIFTING SENSOR INPUT/OUTPUT SIGNAL 

    With CONSULT-II 

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

    DIAGNOSIS PROCEDURE

    Monitor item [OPERATION or UNIT Contents
    LIFT RR PULSE The rear lifting position (pulse) judged from the rear lifting sensor is displayed.
    Fig 1: Data Monitor Display
    G02364339Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Check signal between driver seat control unit connector ground, with oscilloscope.
      Fig 2: Signal Table
      G02364340Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Signal Between Terminal 30 And Ground
      G02364341Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : Rear lifting sensor circuit is OK.
    2. NG : GO TO 2.
  2. CHECK REAR LIFTING SENSOR HARNESS CONTINUITY 
    1. Disconnect driver seat control unit connector and rear lifting motor connector.
    2. Check continuity between driver seat control unit connector B152 terminals 28C, 30 and rear lifting motor connector B162 terminals 28B, 30.
      1. 28C (B/W) - 28B (B/W) : Continuity should exist. 
      2. 30 (G/W) - 30 (G/W) : Continuity should exist. 
    3. Check continuity between driver seat control unit connector B152 terminals 28C, 30 and ground.
      1. 28C (B/W) - Ground : Continuity should not exist. 
      2. 30 (G/W) - Ground : Continuity should not exist. 

    OK or NG 

    1. OK : Replace rear lifting motor.
    2. NG : Repair or replace harness between driver seat control unit and rear lifting motor.
    Fig 4: Checking Continuity Between Terminals 28C, 30 And Ground
    G02364342Courtesy of NISSAN MOTOR CO., U.S.A.