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Home >> Infiniti >> 2017 >> Q50 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) B1F10-U1725 And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> DTC U12BA: MULTIFUNCTION Switch Conn >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. PERFORM SELF-DIAGNOSIS OF INTEGRAL SWITCH

    1. Turn ignition switch ON.
    2. After ignition switch ON, press "RADIO" switch and "MENU" switch at the same time more than 3 seconds within 10 seconds.
    3. A beep sounds, and all the air-conditioner switch indicators turn on, and a self-diagnostic mode is started.
    4. Press each multifunction switch and check the beep sound.
    NOTE:

    Self-diagnostic mode is ended when the ignition switch turns OFF.

    Does the beep sound by all the switch operations?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 2  .

  2. CHECK MULTIFUNCTION SWITCH

    Check the multifunction switch. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    Repair or replace harness between integral switch and multifunction switch which does not operate.

    NO 

    Replace multifunction switch. Refer to REMOVAL AND INSTALLATION .

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