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
LIGHTS INDICATION 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 Ω ◦ ◦ ◦ ◦ ◦: 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 Techstream.
- This system has a signal check function. The DTC can be read by connecting the Techstream 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.
TROUBLE AREA 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.