ABS Diagnosis System

A. Check the warning lights and buzzer.
1. Release parking brake lever.
2. When the ignition switch is turned ON, check that the ABS, VSC TRAC and BRAKE warning lights, VSC OFF, SLIP and ACTIVE TRAC indicator lights go on for 3 sec.
3. When depressing the brake pedal repeatedly it may turn on the ABS, VSC TRAC and BRAKE warning lights, VSC OFF indicator light and buzzer.

HINT: If the ECU stores DTC, ABS, VSC TRAC and BRAKE warning lights warning light and VSC OFF indicator light is ON.
If the indicator check result is not normal, proceed to troubleshooting for the ABS warning light circuit, VSC TRAC warning light circuit, brake warning light circuit, VSC OFF indicator light circuit, SLIP indicator light circuit and ACTIVE TRAC indicator light circuit.

Trouble Area
* ABS warning light circuit
* VSC TRAC warning light circuit
* BRAKE warning light circuit
* VSC OFF indicator light circuit
* SLIP indicator light circuit
* ACTIVE TRAC indicator light circuit





B. In case of using LEXUS hand-held tester:
Check the DTC.

1. Hook up the LEXUS hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. Read the DTC by following the prompts on the tester screen.

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