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, the ABS, BRAKE, VSC warning lights and SLIP indicator light will come on to warn the driver. The table below indicates which lights come on when there is a malfunction in a particular function.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ABS, BRAKE, VSC AND SLIP INDICATOR LIGHT INDICATION REFERENCEItem / Trouble Area ABS EBD BA (Brake Assist) TRAC VSC Skid Control ECU ABS Warning Light ◦ ◦ ◦ - - ◦ BRAKE Warning Light - ◦ - - - ◦ SLIP Indicator Light ◦ ◦ ◦ ◦ ◦ ◦ VSC Warning Light ◦ ◦ ◦ ◦ ◦ ◦ ◦: Light ON
-: Light OFF- The DTCs are simultaneously stored in memory. The DTCs can be read by connecting the SST between TC and CG terminals of the DLC3 and observing the blinking of the ABS warning light and VSC warning light, or by connecting Techstream.
- This system has a sensor signal check function (TEST MODE).
The DTC can be read by connecting the SST between terminals TS and CG of the DLC3 and observing the blinking of the ABS warning light and VSC warning light, or by connecting Techstream.
- If the skid control ECU detects a malfunction, the ABS, BRAKE, VSC warning lights and SLIP indicator light will come on to warn the driver. The table below indicates which lights come on when there is a malfunction in a particular function.
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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.
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