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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 183 (Defogger) >> Symptom Diagnosis >> Rear Window Defogger Does Not Operate >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REAR WINDOW DEFOGGER SWITCH 

    Check rear window defogger switch. Refer to Component Function Check .

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Repair or replace the malfunctioning parts.

  2. CHECK REAR WINDOW DEFOGGER RELAY 

    Check rear window defogger relay.

    Refer to Component Function Check .

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace the malfunctioning parts.

  3. CHECK REAR WINDOW DEFOGGER 

    Check rear window defogger.

    Refer to Component Function Check .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace the malfunctioning parts.

  4. CHECK INTERMITTENT INCIDENT 

    Check intermittent incident.

    Refer to Intermittent Incident .

    Is the inspection result normal?

    YES

    Check the following.

    • Battery power supply circuit
    • Fuse block (J/B)
    • IPDM E/R

    NO

    Repair or replace the malfunctioning parts.