ABS Diagnosis System

DIAGNOSIS SYSTEM





A. Check the warning lights and buzzer.
1. Release parking brake pedal.
2. When the ignition switch is turned ON, check that the ABS and BRAKE warning lights goes on for 3 seconds.
3. When depressing the brake pedal repeatedly it may turn on the warning lights and buzzer.

HINT: If the indicator check result is not normal, proceed to troubleshooting for the ABS and BRAKE warning lights circuit.

B. In case of not using LEXUS hand-held tester:
Check the DTC.




1. Disconnect the short pin from DLC1.




2. Using SST connect terminals Tc and E1 of DLC1.

SST 09843-18020

3. Turn the ignition switch ON.
4. Read the DTC from the ABS warning light on the combination meter.

HINT: If no code appears, inspect the diagnostic circuit or ABS warning light circuit.




As an example, the blinking patterns for normal code and codes 11 and 21 are shown.

5. Codes are explained in the code table.
6. After completing the check, disconnect terminals Tc and E1 of DLC1 and turn off the display.

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