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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> External Pages >> Different car >> Section 778 (Engine Control System - Component Testing) >> ASCD Brake Switch >> Component Function Check
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Component Function Check

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  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 connectors.
      VOLTAGE SPECIFICATION

      ECM Condition Voltage
      Connector + -
      Terminal Terminal
      E10 110 (ASCD brake switch signal) 112 Brake pedal Slightly depressed Approx. 0 V
      Fully released Battery voltage
      Fig 1: Checking Voltage Between ECM Harness Connectors
      G05869965Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".

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