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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 998 (Automatic Drive Positioner) >> Component Diagnosis >> Lifting Motor (Front) >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK LIFTING MOTOR (FRONT) POWER SUPPLY
    1. Turn the ignition switch to ACC.
    2. Perform "Active test" ("SEAT LIFTER FR") with CONSULT-III.
    3. Check voltage between driver seat control unit harness connector and ground.
    Fig 1: Checking Voltage Between Driver Seat Control Unit Harness Connector And Ground
    G05877587Courtesy of NISSAN MOTOR CO., U.S.A.
    VOLTAGE REFERENCE CHART

    Terminal Test Item Voltage (V) (Approx.)
    (+) (-)
    Driver seat control unit connector Terminal
    B211 40 Ground SEAT LIFTER FR OFF 0
    UP 0
    DWN (down) Battery voltage
    36 OFF 0
    UP Battery voltage
    DWN (down) 0

    Is the inspection result normal? 

    YES: Replace front power seat LH [lifting motor (front)]. Refer to "REMOVAL AND INSTALLATION ".

    NO: GO TO 2

  2. CHECK LIFTING MOTOR (FRONT) CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit and front power seat LH [lifting motor (front)].
    3. Check continuity between driver seat control unit harness connector and front power seat LH [lifting motor (front)] harness connector.
      Fig 2: Checking Continuity Between Driver Seat Control Unit Connector And Front Power Seat LH [Lifting Motor (Front)] Connector
      G05877588Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY REFERENCE CHART

      Driver seat control unit connector Terminal Front power seat LH [lifting motor (front)] connector Terminal Continuity
      B211 (A) 36 B205 (B) 5 Yes
      40 4
    4. Check continuity between driver seat control unit harness connector and ground.
    CONTINUITY REFERENCE CHART

    Driver seat control unit connector Terminal Ground Continuity
    B211 (A) 36 No
    40

    Is the inspection result normal? 

    YES: GO TO 3

    NO: Repair or replace harness.

  3. CHECK INTERMITTENT INCIDENT

Refer to "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace driver seat control unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair or replace the malfunctioning part.