LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 998 (Automatic Drive Positioner) >> Component Diagnosis >> Reclining Sensor >> 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 RECLINING SENSOR SIGNAL
    1. Turn ignition switch ON.
    2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
    VOLTAGE REFERENCE CHART

    Terminals Condition Voltage signal
    (+) (-)
    Driver seat control unit Terminal
    B203 4 Ground Seat reclining Operate
    G05223234Courtesy of NISSAN MOTOR CO., U.S.A.
    Other than above 0 or 5
    Fig 1: Checking Voltage Signal Between Driver Seat Control Unit Harness Connector And Ground
    G05877548Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

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

    NO: GO TO 2

  2. CHECK RECLINING SENSOR CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit and reclining motor.
    3. Check continuity between driver seat control unit harness connector and reclining motor harness connector.
      CONTINUITY REFERENCE CHART

      Driver seat control unit Reclining motor Continuity
      Connector Terminal Connector Terminal
      B203 (A) 4 B222 (B) 3 Yes
    4. Check continuity between driver seat control unit harness connector and ground.
    Fig 2: Checking Continuity Between Driver Seat Control Unit Harness Connector And Ground
    G05877549Courtesy of NISSAN MOTOR CO., U.S.A.
    CONTINUITY REFERENCE CHART

    Driver seat control unit Ground Continuity
    Connector Terminal
    B203 (A) 4 No

    Is the inspection result normal? 

    YES: GO TO 3

    NO: Repair or replace harness.

  3. CHECK RECLINING SENSOR POWER SUPPLY
    1. Connect driver seat control unit.
    2. Turn ignition switch ON.
    3. Check voltage between reclining motor harness connector and ground.
    VOLTAGE REFERENCE CHART

    (+) (-) Voltage (V) (Approx.)
    Reclining motor
    Connector Terminals
    B222 4 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5

    NO: GO TO 4

    Fig 3: Checking Voltage Between Reclining Motor Harness Connector And Ground
    G05877550Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK RECLINING SENSOR POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit.
    3. Check continuity between driver seat control unit harness connector and reclining motor harness connector.
      CONTINUITY REFERENCE CHART

      Driver seat control unit Reclining motor Continuity
      Connector Terminal Connector Terminal
      B203 (A) 12 B222 (B) 4 Yes
    4. Check continuity between driver seat control unit harness connector and ground.
    Fig 4: Checking Continuity Between Driver Seat Control Unit Harness Connector And Ground
    G05877551Courtesy of NISSAN MOTOR CO., U.S.A.
    CONTINUITY REFERENCE CHART

    Driver seat control unit Ground Continuity
    Connector Terminal
    B203 (A) 12 No

    Is the inspection result normal? 

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

    NO: Repair or replace harness.

  5. CHECK RECLINING SENSOR GROUND
    1. Turn ignition switch OFF.
    2. Check continuity between reclining motor harness connector and ground.
    CONTINUITY REFERENCE CHART

    Reclining motor Ground Continuity
    Connector Terminal
    B222 2 Yes

    Is the inspection result normal? 

    YES: Replace reclining motor. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace harness.

    Fig 5: Checking Continuity Between Reclining Motor Harness Connector And Ground
    G05877552Courtesy of NISSAN MOTOR CO., U.S.A.
scientia non olet · About LEMON Manuals