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Power Liftgate Switch System Inspection: Notes

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. POWER LIFTGATE SWITCH FUNCTION INSPECTION 

    Check power liftgate switch using switch operation.

    OK or NG

    1. OK: Power liftgate switch is OK.
    2. NG: GO TO 2.
  2. POWER LIFTGATE SWITCH POWER SUPPLY CIRCUIT INSPECTION 
    1. Turn ignition switch OFF.
    2. Check voltage between power liftgate switch connector M92 terminal 1 and ground.
      1. 1 (L/W) - Ground: Approx. battery voltage 

    OK or NG

    1. OK: GO TO 3.
    2. NG: Repair or replace harness.
    Fig 1: Checking Voltage Between Power Liftgate Switch Connector M92 Terminal 1 And Ground
    G02385268Courtesy of NISSAN MOTOR CO., U.S.A.
  3. POWER LIFTGATE SWITCH SIGNAL INSPECTION 
    1. Turn ignition switch OFF.
    2. While operating the power liftgate switch, check voltage between back door control unit connector B55 terminal 23 and ground.
      Fig 2: Back Door Control Unit Terminal 23 And Ground Voltage Specification Chart
      G02385269Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Voltage Between Back Door Control Unit Connector B55 Terminal 23 And Ground
      G02385270Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Switch is OK.
    2. NG: GO TO 4.
  4. POWER LIFTGATE SWITCH CIRCUIT INSPECTION 
    1. Disconnect power liftgate switch and back door control unit connector.
    2. Check continuity between power liftgate switch connector M92 terminal 1 and back door control unit connector B55 terminal 23.
      1. 1 (L/W) - 23 (L/W): Continuity should exist. 

    OK or NG

    1. OK: GO TO 5.
    2. NG: Repair or replace harness.
    Fig 4: Checking Continuity Between Power Liftgate Switch Connector M92 Terminal 1 And Back Door Control Unit Connector B55 Terminal 23
    G02385271Courtesy of NISSAN MOTOR CO., U.S.A.
  5. POWER LIFTGATE SWITCH GROUND INSPECTION 

    Check continuity between power liftgate switch connector terminal 2 and ground.

    1. 2 (B) - Ground: Continuity should exist. 

    OK or NG

    1. OK: Replace the power liftgate switch.
    2. NG: Repair or replace harness.
    Fig 5: Checking Continuity Between Power Liftgate Switch Connector Terminal 2 And Ground
    G02385272Courtesy of NISSAN MOTOR CO., U.S.A.
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