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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Door & Lock (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC B2419: Open Switch >> Diagnosis Procedure

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY 

    Check for entry of foreign materials in back door lock assembly.

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Remove foreign materials.

  2. CHECK BACK DOOR OPEN/CLOSE OPERATION 

    Manually check open and close operation of back door.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace the malfunctioning parts.

  3. CHECK OPEN SWITCH SIGNAL 
    1. Select AUTOMATIC BACK DOOR CONTROL MODULE using CONSULT.
    2. Select OPEN SW in DATA MONITOR mode.
    3. Check that the function operates normally according to the following conditions.
      Monitor item Condition Status
      OPEN SW Back door Fully closed/Half latch OFF
      Open ON

      Is the inspection result normal? 

      YES: GO TO  8.

      NO: GO TO 4.

  4. CHECK OPEN SWITCH INPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect back door lock assembly connector.
    3. Check voltage between back door lock assembly harness connector and ground.
      (+) (-) Voltage (Approx.)
      Back door lock assembly
      Connector Terminal
      D557 4 Ground 16 - 8 V

      Is the inspection result normal? 

      YES: GO TO  6.

      NO: GO TO 5.

  5. CHECK OPEN SWITCH CIRCUIT 
    1. Disconnect automatic back door control module connector.
    2. Check continuity between automatic back door control module harness connector and back door lock assembly harness connector.
      Automatic back door control module Back door lock assembly Continuity
      Connector Terminal Connector Terminal
      B55 11 D557 4 Yes
    3. Check continuity between automatic back door control module harness connector and ground.
      Automatic back door control module Ground Continuity
      Connector Terminal
      B55 11 No

      Is the inspection result normal? 

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

      NO: Repair or replace harness.

  6. CHECK OPEN SWITCH GROUND CIRCUIT 

    Check continuity between back door lock assembly harness connector and ground.

    Back door lock assembly Ground Continuity
    Connector Terminal
    D557 8 Yes

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Repair or replace harness.

  7. CHECK OPEN SWITCH 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Replace back door lock assembly. Refer to "DOOR LOCK: REMOVAL AND INSTALLATION ".

  8. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : Inspection End.