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Home >> Lexus >> 2006 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Brakes - Abs With EBD & BD & TRAC & VSC (Diagnostics)) >> Diagnosis System

Diagnosis System

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. DIAGNOSIS 
    1. If the skid control ECU detects a malfunction, the ABS, brake, VSC TRAC warning lights and the VSC OFF, slip, DAC indicator lights will come on to warn the driver. The table below indicates which lights will come on when there is a malfunction in a particular function.
      Fig 1: Identifying ABS Warning Light, Brake Warning Light, VSC TRAC Warning Light & VSC OFF Indicator Light
      G04335939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    LIGHTS BLINKING REFERENCE

    Item/Trouble Area ABS EBD BA VSC TRAC A-TRAC (4WD) AUTO LSD DAC (4WD) HAC
    ABS warning light O O O - - - - - -
    Brake warning light - O - - - - - - -
    VSC TRAC warning light O O O O O O O O O
    VSC OFF indicator light (4WD) O O O O O O O O O
    Slip indicator light O O O O O O O O O
    AUTO LSD indicator light - - - - - - - - -
    DAC indicator light (4WD) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON) X (DAC switch ON)
    O : Light ON

    X : Light ON (Blinking)

    - : Light OFF
    • The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting the SST between terminals TC and CG of the DLC3 and observing the blinking of the ABS and VSC TRAC warning lights, or by connecting the hand-held tester.
    • This system has a signal check function (test mode).

      The DTC can be read by connecting the hand-held tester and observing the blinking of the ABS and VSC TRAC warning lights.

  2. WARNING LIGHT AND INDICATOR LIGHT BULB CHECK 
    1. Release the parking brake lever.
      NOTE: When releasing the parking brake, set the chocks to hold the vehicle for safety.

      HINT:

      When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.

    2. When the ignition switch is turned to the ON position, check that the ABS, brake, and VSC TRAC warning lights and the VSC OFF, slip, AUTO LSD, and DAC indicator lights come on for approximately 3 seconds.

      HINT:

      If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS, brake, and VSC TRAC warning light circuits, and the VSC OFF, slip, AUTO LSD, and DAC indicator light circuits.

      If the indicator remains on, proceed to troubleshooting for the light circuit below.

      Fig 2: Identifying ABS Warning Light, Brake Warning Light, VSC TRAC Warning Light & VSC OFF Indicator Light
      G04335940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TROUBLE AREA REFERENCE

      Trouble Area Reference
      ABS warning light circuit ABS WARNING LIGHT CIRCUIT 
      Brake warning light circuit BRAKE WARNING LIGHT CIRCUIT 
      VSC TRAC warning light circuit VSC TRAC warning light circuit 
      VSC off indicator light circuit VSC OFF indicator light circuit 
      Slip indicator light circuit SLIP INDICATOR LIGHT CIRCUIT 
      Auto LSD indicator light circuit AUTO LSD indicator light circuit 
      DAC indicator light circuit DAC INDICATOR LIGHT CIRCUIT 
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