Inspection Procedure

Total OBD & ECU Auto Diagnostics

Total OBD & ECU Auto Diagnostics

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Check that brake ECU connectors are securely connected to brake ECU.

Connect connectors to brake ECU.

Check DTC on page DI-363.

yesn

Check ABS solenoid relay. Check for short circuit in harness and connector between ABS solenoid relay and DLC3 (See page IN—41).

YESN

Check for open or short circuit in harness and connector between ECU-IG fuse and brake ECU (See page IN-41).

CHECK:

Check the battery positive voltage. OK:

Check and repair charging system (See page HV-39).

In case of using the TOYOTA hand-held tester: PREPARATION:

(a) Connect the TOYOTA hand-held tester to the DLC3.

(b) Turn the ignition switch ON, and push the TOYOTA hand-held tester main switch ON.

(c) Select the ACTIVE TEST mode on the TOYOTA hand-held tester. CHECK:

Check that "ON" and "OFF" of the ABS warning light can be shown on the combination meter by the TOYOTA hand-held tester.

In case of not using the TOYOTA hand-held tester:

(a) Disconnect the connector (B11) from the brake ECU.

(b) Using service wire, connect terminal WA of brake ECU harness side connector and body ground. Turn the ignition switch ON.

ABS warning light goes off.

Check for short circuit in harness and connector between combination meter and brake ECU, combination meter and DLC3 (See page IN—41). Check ABS solenoid relay circuit (See page DI-386).

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