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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) & Symptom Tests (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC U1259: Integral Switch Conn >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK INTEGRAL SWITCH POWER SUPPLY AND GROUND CIRCUIT

    Check integral switch power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace malfunctioning parts.

  2. CHECK AV COMMUNICATION CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect display control unit harness connector and integral switch harness connector.
    3. Check the continuity between display control unit harness connector and integral switch harness connector.
      Display control unit Integral switch Continuity
      Connector Terminal Connector Terminal
      M100 16 M1 3 Existed
      28 4

    Is the inspection result normal?

    YES 

    Replace integral switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace malfunctioning parts.

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