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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LAN Communication System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0162: Lost Communication With Audio Visual Navigation Display Module

DTC U0162: Lost Communication With Audio Visual Navigation Display Module

DTC detecting condition: 

No data is received from audio or navigation unit.

Trouble symptom: 

The audio or navigation unit does not operate normally.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to LAN SYSTEM (DIAGNOSTICS)>General Description>CAUTION .
  1. CHECK CAN COMMUNICATION HARNESS  .

    Perform the basic diagnostic procedure to check for fault in CAN communication harness. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

    Was the basic diagnostic procedure performed up to step 7?

    Yes  : Go to  2.

    No  : Perform the basic diagnostic procedure. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

  2. CHECK DTC (OTHER THAN U-CODE)  .

    Check the displayed DTC.

    Is DTC other than U*** displayed? (Current malfunction)

    Yes  : Perform the diagnosis for DTCs other than the displayed U-code.

    No  : Go to  3.

  3. CHECK DTC  .

    Check the displayed DTC.

    Is DTC U0162 displayed? (Current malfunction)

    Yes  : Go to  4.

    No  : Go to  6.

  4. CHECK DTC  .
    1. Check CAN communication circuit. Ref. to LAN SYSTEM (DIAGNOSTICS)>CAN COMMUNICATION CIRCUIT CHECK .
    2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>OPERATION .

    Is DTC U0162 displayed? (Current malfunction)

    Yes  : Go to  5.

    No  : Go to  6.

  5. CHECK DTC  .

    Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>OPERATION .

    Is DTC U0162 detected in several modules? (Current malfunction)

    Yes  : Replace the audio or navigation unit. Ref. to ENTERTAINMENT & MONITORING>AUDIO . Ref. to ENTERTAINMENT & MONITORING>NAVIGATION BODY .

    No  : Replace the module that the DTC has been detected.

  6. CHECK HARNESS  .
    1. Shake the harness, and check for poor contact.
    2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>OPERATION .

    Is DTC U0162 displayed? (Current malfunction)

    Yes  : Repair the poor contact of harness, or replace the harness.

    No  : Go to  7.

  7. CHECK CONNECTOR  .

    Check the connector used for high speed CAN for poor contact.

    Is there poor contact of connector?

    Yes  : Repair the connector that has poor contact, or replace harness.

    No  : It is possible that temporary poor communication occurs. Delete the DTC.

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