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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Driver Assistance System (DTC/Circuit Diagnosis) (LDW & LDP) (Except Hybrid)) >> DTC/Circuit Diagnosis >> Warning Systems Switch Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT

    1. Turn the ignition switch ON.
    2. Check voltage between ADAS control unit harness connector and ground.
    Terminals Condition Voltage
    (Approx.)
    (+) (-)
    ADAS control unit Ground Warning systems switch
    Connector Terminal
    B104 18 Pressed 0 V
    Released 12 V

    Is the inspection result normal?

    YES 

    Replace the ADAS control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 2  .

  2. CHECK WARNING SYSTEMS SWITCH

    1. Turn ignition switch OFF.
    2. Remove warning systems switch.
    3. Check warning systems switch. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Replace the warning systems switch. Refer to REMOVAL AND INSTALLATION .

  3. CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT

    Check continuity between warning systems switch harness connector terminal and the ground.

    Warning systems switch Ground Continuity
    Connector Terminal
    M126 8 Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair harness or connector.

  4. CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR OPEN

    1. Disconnect the ADAS control unit connector.
    2. Check continuity between the ADAS control unit harness connector and warning systems switch harness connector.
      ADAS control unit Warning systems switch Continuity
      Connector Terminal Connector Terminal
      B104 18 M126 6 Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Repair the harnesses or connectors.

  5. CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR SHORT

    Check continuity between the ADAS control unit harness connector and ground.

    ADAS control unit Ground Continuity
    Connector Terminal
    B104 18 No

    Is the inspection result normal?

    YES 

    Replace the ADAS control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair the harnesses or connectors.

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