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Home >> Infiniti >> 2010 >> M35 Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - System And Component Testing >> ASCD Brake Switch >> Component Function Check
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Component Function Check

  1. CHECK ASCD BRAKE SWITCH FUNCTION

    With CONSULT-III 

    1. Turn ignition switch ON.
    2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-III.
    3. Check "BRAKE SW1" indication under the following conditions.
      MONITOR ITEM CONDITION CHART

      Monitor item Condition Indication
      BRAKE SW1 Brake pedal Slightly depressed OFF
      Fully released ON

    Without CONSULT-III 

    1. Turn ignition switch ON.
    2. Check the voltage between ECM harness connector terminals as per the following.
      Fig 1: Checking Voltage Between ECM Harness Connector Terminals
      G06306755Courtesy of NISSAN MOTOR CO., U.S.A.
      CONNECTOR TERMINAL VOLTAGE CHART

      ECM Condition Voltage (V)
      Connector + -
      Terminal Terminal
      M9 126 (ASCD 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 ".