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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 4) >> DTC/Circuit Diagnosis >> ICC Brake Switch >> Component Function Check >> Diagnostic Test
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Diagnostic Test

  1. CHECK ICC BRAKE SWITCH FUNCTION

    G-20With CONSULT 

    1. Turn Ignition Switch ON.
    2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT.
    3. Check "BRAKE SW1" indication under the following conditions.
      Monitor Item Condition Indication
      BRAKE SW1 Brake pedal Slightly depressed OFF
      Fully released ON

    G-21Without CONSULT 

    1. Turn Ignition Switch ON.
    2. Check the voltage between ECM harness connector terminals as per the following.
      ECM Condition Voltage (V)
      Connector + -
      Terminal Terminal
      M164 126
      (ICC Brake Switch signal)
      128 Brake pedal Slightly depressed Approx. 0
      Fully released Battery voltage

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Go to DIAGNOSIS PROCEDURE .