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Diagnosis System

  1. DIAGNOSIS CAUTION: 
    CAUTION: When releasing the parking brake lever, set the chocks to hold the vehicle for safety.
    1. Release the parking brake lever.
      Fig 1: Identifying ABS And Brake Light Warning Lights
      G04868592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. If the skid control ECU detects a malfunction, the ABS and BRAKE warning lights will come on to warn the driver. The table below indicates which lights come on when there is a malfunction in a particular function.
      DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

      Item/Trouble Area ABS System EBD System Skid Control ECU
      ABS Warning light (1) (1) (1)
      BRAKE Warning light (2) (1) (1)
      (1) Light ON
      (2) Light OFF
    3. The DTCs are simultaneously stored in 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 warning light, or by connecting the intelligent tester.

      SST 09843-18040 

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