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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 628 (Door & Lock (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC B242B: Motion Activated Back Door Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK SELF DIAGNOSTIC RESULT 
    1. Turn ignition switch ON.
    2. Select "Self Diagnostic Result" mode of "AUTO BACK DOOR" using CONSULT.

    What is the display history of DTC "B242B"?

    "CRNT"

    GO TO 2.

    "PAST"

    GO TO 3.

  2. CHECK INTERMITTENT INCIDENT 
    1. Check intermittent incident. Refer to Intermittent Incident .
    2. Select "Self Diagnostic Result" mode of "AUTO BACK DOOR" using CONSULT.

    Is DTC "B242B" detected?

    YES

    GO TO 4.

    NO

    Inspection End.

  3. ERASE DTC 
    1. Turn ignition switch ON.
    2. Select "Self Diagnostic Result" mode of "AUTO BACK DOOR" using CONSULT.
    3. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Logic .

    Is DTC "B242B" detected?

    YES

    GO TO 4.

    NO

    Inspection End.

  4. REPLACE MOTION ACTIVATED BACK DOOR CONTROL UNIT 
    1. Turn ignition switch OFF.
    2. Replace motion activated back door control unit. Refer to Removal and Installation .
    3. Turn ignition switch ON.
    4. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Logic .

    Is DTC "B242B" detected?

    YES

    Replace BCM. Refer to Removal and Installation .

    NO

    Inspection End.

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