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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Multi Av System (NAVI Without BOSE)) >> Multi Av (NAVI Without BOSE) >> DTC/Circuit Diagnosis >> U121F Av Control Unit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTION STATUS OF AV CONTROL UNIT CONNECTOR 

    Check the AV control unit connectors for proper connection, damage and disconnected or loose terminals.

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Repair or replace harness or connectors.

  2. CHECK FOR SD CARD POOR CONNECTION 

    SYMBOL With CONSULT

    1. Turn the ignition switch OFF and wait 30 seconds or more.
    2. Remove and re-insert the SD card.
    3. Turn the ignition switch ON and wait for 30 seconds or more.
    4. Check self-diagnosis results of "MULTI AV" using CONSULT.

    Is DTC U121F detected?

    YES

    Replace AV control unit. Refer to Removal and Installation .

    NO

    Inspection End.

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