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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Electrical >> Gauges >> Meter, Warning Lamp And Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> U102B-87 M-Can Communication System >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK SELF DIAGNOSTIC RESULT 
    1. Check if any DTC other than "U102B-87" is detected in "Self Diagnostic Result" mode of "MULTI AV".

    Is any DTC detected?

    YES>>

    Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC Index .

    NO>>

    Replace AV control unit. Refer to Removal and Installation .