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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Diagnostic Trouble Codes (DTCS), Symptom Tests And R & I) >> DTC/Circuit Diagnosis >> Automatic Back Door Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK AUTOMATIC BACK DOOR SWITCH INPUT SIGNAL

    1. Turn ignition switch OFF.
    2. Disconnect automatic back door switch connector.
    3. Check voltage between automatic back door switch harness connector and ground.
      (+) (-) Voltage
      (Approx.)
      Automatic back door switch
      Connector Terminal
      M127 3 Ground Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 2  .

  2. CHECK AUTOMATIC BACK DOOR SWITCH CIRCUIT

    1. Disconnect automatic back door control module connector.
    2. Check continuity between automatic back door control module harness connector and automatic back door switch harness connector.
      Automatic back door control module Automatic back door switch Continuity
      Connector Terminal Connector Terminal
      B26 2 M126 3 Existed
    3. Check continuity between automatic back door control module harness connector and ground.
      Automatic back door control module Ground Continuity
      Connector Terminal
      B26 2 Not existed

    Is the inspection result normal?

    YES 

    Replace automatic back door control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  3. CHECK AUTOMATIC BACK DOOR SWITCH GROUND CIRCUIT

    Check continuity between automatic back door switch harness connector and ground.

    Automatic back door switch Ground Continuity
    Connector Terminal
    M126 4 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  4. CHECK AUTOMATIC BACK DOOR SWITCH

    Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Replace automatic back door switch.

  5. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END