ANTI-LOCK BRAKE SYSTEM ABS Warning Light does not Come ON

WIRING DIAGRAM

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INSPECTION PROCEDURE

PROCEDURE


  1. CHECK ABS WARNING LIGHT


    1. When using an intelligent tester:


      1. Connect the intelligent tester.

      2. Turn the ignition switch to the ON position.

      3. Turn the tester ON.

      4. Select the "ABS Warning Light " in the ACTIVE TEST and operate the ABS warning light by using the intelligent tester.

        Select the following menu items: Chassis / ABS/VSC/TRC / Active Test.

        Item Vehicle Condition / Test Details Diagnostic Note
        ABS Warning Light Turns ABS warning light ON / OFF Observe combination meter

      5. Check that "ON" and "OFF" of the ABS warning light can be shown on the combination meter by the intelligent tester.

        OK
        The ABS warning light turns ON or OFF in accordance with the intelligent tester.

    2. When not using an intelligent tester:

      Tech Tips

      By disconnecting the ECU connector, the ABS warning light comes on (as the ABS warning light circuit in the meter is an active circuit).


      1. Turn the ignition switch to OFF.

      2. Disconnect the skid control ECU connector.

      3. Turn the ignition switch to the ON position.

      4. Check that the ABS warning light comes on.

        OK
        The ABS warning light comes on.

    NG

    INSPECT FUSE (IG2) Click here

    OK

    REPLACE BRAKE ACTUATOR

  2. INSPECT FUSE (IG2)


    1. A01391UE03

      Remove the IG2 fuse from the instrument panel J/B.

    2. Measure the resistance.

      Standard Resistance
      Below 1 Ω

    NG

    REPLACE FUSE

    OK

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)


    1. Disconnect the skid control ECU connector and the combination meter connector.

    2. Inspect both the connector case and the terminal for deformation and corrosion.

      OK
      No deformation or corrosion.
    3. A013742E01

      Measure the resistance.

      Standard Resistance
      Tester Connection Specified Condition
      A21-22 (WA) - A22-16 (LP) Below 1 Ω
      A21-22 (WA) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)


    1. Disconnect the instrument panel J/B connector 3H.

    2. Turn the ignition switch to the ON position.

    3. A013773E01

      Measure the voltage.

      Standard Voltage
      Tester Connection Specified Condition
      3H-9 - Body ground 10 to 14 V

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY