Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnosis System
- DIAGNOSIS
- If the skid control ECU detects a malfunction, it will warn the driver by turning on the ABS, BRAKE and brake control warning lights and SLIP indicator light. It also warns the driver with the indication on the multi-information display.
The table below indicates which lights will come on when there is a malfunction in a particular function.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
LIGHT REFERENCE CHARTItem / Trouble Area ABS EBD BA TRAC VSC ABS Warning Light ◦ ◦ ◦ - - BRAKE Warning Light - ◦ - - - Brake Control Warning Light (Multi-information Display) ◦ ◦ ◦ ◦ ◦ SLIP Indicator Light ◦ ◦ ◦ ◦ ◦ Multi-information Display ◦ ◦ ◦ ◦ ◦ ◦: Light ON -: Light OFF - The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting SST between terminals TC and CG of the DLC3 and observing the blinking pattern of the ABS, brake control warning lights, or indication on the multi-information display, or by connecting the intelligent tester.
- This system has a signal check function. The DTC can be read by connecting the intelligent tester and observing the blinking pattern of the ABS and brake control warning lights or by reading the multi-information display.
- If the skid control ECU detects a malfunction, it will warn the driver by turning on the ABS, BRAKE and brake control warning lights and SLIP indicator light. It also warns the driver with the indication on the multi-information display.
- WARNING LIGHT AND INDICATOR LIGHT BULB CHECK
- Release the parking brake.CAUTION: When releasing the parking brake, set chocks to hold the vehicle for safety.
- When the engine switch is turned on (IG), check that the ABS, BRAKE and brake control warning lights and SLIP and VSC OFF indicator lights illuminate and then turn off after the engine starts.
HINT:
If the warning light and indicator light check result is not normal, proceed to troubleshooting for the light circuit below.
LIGHT REFERENCE CHARTTrouble area See procedure ABS warning light circuit ABS WARNING LIGHT REMAINS ON BRAKE warning light circuit BRAKE WARNING LIGHT REMAINS ON Brake control warning light circuit BRAKE CONTROL WARNING LIGHT REMAINS ON SLIP indicator light circuit SLIP INDICATOR LIGHT REMAINS ON VSC OFF indicator light circuit SLIP INDICATOR LIGHT REMAINS ON
- Release the parking brake.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.