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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Brake Control System (VDC - Diagnostic Trouble Codes (DTCS) Symptom Tests And Component R&R) (Exc Hybrid) >> DTC/Circuit Diagnosis >> VDC Off Indicator Lamp >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT

    Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair / replace harness, connector, fuse, or fusible link.

  2. CHECK VDC OFF INDICATOR LAMP SIGNAL (1)

    With CONSULT

    1. Select "ABS", "DATA MONITOR" and "OFF LAMP" according to this order.
    2. Turn the ignition switch OFF.
    3. Check that data monitor displays "On" for 1 second after ignition switch is turned ON, and then changes to "Off".
      CAUTION:

      Never start the engine.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Replace the ABS actuator and electric unit (control unit). Refer to REMOVAL AND INSTALLATION .

  3. CHECK VDC OFF INDICATOR LAMP SIGNAL (2)

    With CONSULT

    1. Select "ABS", "DATA MONITOR" and "OFF LAMP" according to this order.
    2. Check that data monitor displays "On" or "Off" each time when VDC OFF switch is operated.

    Is the inspection result normal?

    YES 

    Replace the combination meter. Refer to REMOVAL AND INSTALLATION .

    NO 

    Check the VDC OFF switch system. Refer to DIAGNOSIS PROCEDURE .