Abs With EBD System - Diagnostics: Pre-Check

1. Release the parking brake pedal.
2. Check the warning light.

   When the ignition switch is turned ON, check that the ABS warning light and BRAKE warning light turns on for 3 sec.

   HINT:

   • When the parking brake is applied or the level of the brake fluid is low, the BRAKE warning light is lit.
   • If the indicator check result is not normal, proceed to troubleshooting for the ABS warning light circuit (See ABS WARNING LIGHT CIRCUIT (REMAINS ON)  or ABS WARNING LIGHT CIRCUIT (DOES NOT LIGHT UP)  ) or BRAKE WARNING LIGHT CIRCUIT  (See ).
   Fig 1: Locating ABS Brake Warning Light

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3. In case of not using hand-held tester:

   Check the DTC.

   1. Using SST, connect terminals Tc and CG of DLC3. SST 09843-18040
   2. Turn the ignition switch ON.
   3. Read the DTC from the ABS warning light on the combination meter.

      HINT:

      • If a code does not appear, inspect the diagnostic circuit or ABS warning light circuit (See ABS WARNING LIGHT CIRCUIT (REMAINS ON)  or ABS WARNING LIGHT CIRCUIT (DOES NOT LIGHT UP)  ).
        Fig 2: Identifying DLC3 Connector TC & CG Terminals

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • As an example, the blinking patterns for normal code and codes 11 and 21 are shown on the left.
   4. Codes are explained in the code table on DIAGNOSTIC TROUBLE CODE CHART  .

      If 2 or more malfunctions are indicated at the same time the lowest numbered DTC will be displayed 1st.

   5. After completing the check, remove the SST from the DLC3.

   SST 09843-18040

4. In case of using hand-held tester:

   Check the DTC.

   1. Read the DTC by following the prompts on the tester screen.

   HINT:

   Please refer to the hand-held tester operator's manual for further details.

5. In case of not using hand-held tester:

   Clear DTC.

   1. Using SST, connect the terminals Tc and CG of the DLC3.

      SST 09843-18040

   2. Turn the ignition switch ON.
      Fig 3: Identifying Normal Code Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Clear DTC stored in ECU by depressing the brake pedal 8 or more times within 5 sec.
   4. Check that the ABS warning light shows the normal code.
   5. Remove the SST from the DLC3.

   SST 09843-18040

   HINT:

   Disconnecting the battery cable during repairs will not erase the DTC in the ECU.

6. In case of using hand-held tester:

   Clear the DTC.

   1. Turn the ignition switch ON.
   2. Operate the hand-held tester to erase the codes.

HINT:

Please refer to the hand-held tester operator's manual for further details.

Fig 4: Identifying DTC Clearing Procedures

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HINT:

According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time.

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. According to the display on tester, read the "DATA LIST".

Fig 5: Data List Chart (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002