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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 522 (Defogger) >> Symptom Diagnosis >> Rear Window Defogger Switch Does Not Light, But Rear Window Defogger Operates >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT AIR CONTROL 
    1. Turn ignition switch ON.
    2. Check that the rear DEF LED illuminates when pressed.

    Is the inspection result normal?

    YES

    Inspection End.

    NO

    Replace front air control. Refer to Removal and Installation - Front Air Control (manual A/C) or Removal and Installation - Front Air Control (automatic A/C).

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