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Diagnosis System

  1. DIAGNOSIS 
    1. If the skid control ECU detects a malfunction, it will warn the driver by turning on the ABS warning light, brake warning light / red (malfunction) and brake warning light / yellow (minor malfunction) and slip and brake hold standby indicator light. It also warns the driver with the indication on the multi-information display.
      • The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting SST between terminals 13 (TC) and 4 (CG) of the DLC3 and observing the blinking pattern of the ABS warning light, slip indicator light, brake hold standby indicator light and brake warning light / yellow (minor malfunction), or indication on the multi-information display, or by connecting the Techstream.
      • This system has a Test Mode sensor signal check function. The Test Mode DTC can be read by connecting the Techstream and observing the blinking pattern of the the ABS warning light and brake warning light / yellow (minor malfunction) or by reading the multi-information display.
  2. WARNING LIGHT AND INDICATOR LIGHT CHECK 
    1. Release the parking brake.
      WARNING:

      When releasing the parking brake, set chocks to hold the vehicle for safety.

    2. When the engine switch is on (IG), check that the ABS warning light, brake warning light / red (malfunction) and brake warning light / yellow (minor malfunction), and slip, VSC OFF, brake hold standby, brake hold operated indicator lights illuminate and then turn off after the engine starts.

      If the result is not as specified, proceed to troubleshooting for the light circuit below.

      Trouble area See procedure
      ABS warning light circuit (light remains on) Refer to ABS Warning Light Remains ON
      ABS warning light circuit (light does not come on) Refer to ABS Warning Light does not Come ON
      Brake warning light / red (malfunction) circuit (light remains on) Refer to Brake Warning Light Remains ON
      Brake warning light / red (malfunction) circuit (light does not come on) Refer to Brake Warning Light does not Come ON
      Brake warning light / yellow (minor malfunction) circuit (light remains on) Refer to Brake Control Warning Light Remains ON
      Brake warning light / yellow (minor malfunction) circuit (light does not come on) Refer to Brake Control Warning Light does not Come ON
      Slip indicator light circuit Refer to Slip Indicator Light Circuit
      VSC OFF indicator light circuit (light remains on) Refer to VSC OFF Indicator Light Remains ON
      VSC OFF indicator light circuit (light does not come on) Refer to VSC OFF Indicator Light does not Come ON
      Brake hold standby indicator light circuit Refer to Brake Hold Standby Indicator Light Circuit
      Brake hold operated indicator light circuit Refer to Brake Hold Operated Indicator Light Circuit
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