Vehicle Stability Control System (For Sedan) Diagnosis System

Check the battery voltage.

Standard voltage:

11 to 14 V

Check the DLC3 (YARIS_NCP93 RM000000XHV0BQX.html).

If the skid control ECU detects a malfunction, the ABS warning, brake warning, SLIP indicator lights will come on in order to warn the driver.

The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting the SST between terminals TC and CG of the DLC3 and observing the blinking pattern of the ABS warning and SLIP indicator lights, or by connecting a Techstream.

This system has a Test Mode (signal check) function (YARIS_NCP93 RM000000XHT08IX.html).

Release the parking brake.

NOTICE:

When releasing the parking brake, move the shift lever to P (for automatic transaxle model) or set chocks (for manual transaxle model) to prevent the vehicle from rolling.

HINT:

When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.

When the ignition switch is turned to ON, check that the ABS warning, brake warning, TRAC OFF indicator, VSC OFF indicator and SLIP indicator lights come on for approximately 3 seconds.

HINT:

If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS warning, brake warning, TRAC OFF indicator, VSC OFF indicator and SLIP indicator light circuits.

If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.