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Home >> Infiniti >> 2001 >> QX4 RWD >> Repair and Diagnosis >> Electrical >> Gauges >> Meters And Gauges - Late - Previous >> Meters And Gauges >> Trouble Diagnoses >> Inspection/Vehicle Speed Signal

Inspection/Vehicle Speed Signal

  1. CHECK ABS CONTROL UNIT OUTPUT SIGNAL 

    With CONSULT-II 

    1. Lift up drive wheels.
    2. Start engine.
    3. Check signal between combination meter harness connector M24 terminal 15 (G/Y) and ground when rotating wheels with engine at idle. (Use "SIMPLE OSCILLOSCOPE" in "SUB MODE" with CONSULT-II.)
    Fig 1: Checking ABS Control Unit Output Signal
    G03145474

    Without CONSULT-II 

    1. Lift up drive wheels.
    2. Start engine.
    3. Check voltage between combination meter harness connector M24 terminal 15 (G/Y) and ground when rotating wheels with engine at idle.
    Fig 2: Checking Voltage Between Terminal 15 (G/Y) And Ground
    G03145475

    OK or NG 

    1. OK: ABS control unit is OK.
    2. NG: Check the following. 

      Harness for open or short between ABS actuator and electric unit and combination meter.

      ABS actuator and electric unit. Refer to WHEEL SENSOR OR ROTOR .