Section 618 (Abs With EBD System (BOSCH Made) - Diagnostics): Pre-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.

   Fig 1: Identifying ABS & BRAKE Warning Lights

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2. Check the warning lights.

   When the ignition switch is turned ON, check that the ABS warning light and brake warning light come on for 3 seconds.

HINT:

• When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.
• 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 BRAKE WARNING LIGHT CIRCUIT ).

1. Check DTCs using a SST check wire.
   1. Using SST, connect terminals Tc and CG of the DLC3.

      SST 09843-18040

   2. Turn the ignition switch to the ON position.
   3. Read the DTC from the ABS warning light on the combination meter.
      Fig 2: Identifying Terminals Tc & Cg At DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • If no code appears, 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) ).
      • As an example, the blinking patterns for a normal system code and codes 11 and 21 are shown below.
      Fig 3: Blinking Patterns For A Normal System Code And Codes 11 & 21
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   4. Codes are explained in the code table on DIAGNOSTIC TROUBLE CODE CHART .

      If 2 or more DTCs are detected at the same time, the lowest numbered DTC is displayed first.

   5. After completing the check, remove the SST from the DLC3.
2. Clear the DTCs using the SST check wire.

   SST 09843-18040

   1. Using SST, connect terminals Tc and CG of the DLC3.
   2. Turn the ignition switch to the ON position.
   3. Clear the DTCs stored in the ECU by depressing the brake pedal 8 or more times within 5 seconds.
   Fig 4: Clearing DTCS Stored In ECU By Depressing Brake Pedal
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   4. Check that the ABS warning light shows the normal code.
   5. Remove the SST from the DLC3.

HINT:

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

1. Check DTCs using the hand-held tester.
   1. Read the DTC following the prompts on the tester screen.

   HINT:

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

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

HINT:

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

HINT:

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

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. From the display on the tester, read the "DATA LIST".
   Fig 5: Data List Display Chart (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002