Diagnosis System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: DIAGNOSIS SYSTEM

1. DIAGNOSIS

(a) If the skid control ECU detects a malfunction, the ABS and BRAKE warning lights and the SLIP indicator light will come on to warn the driver.





HINT
* 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 of the ABS warning light and SLIP indicator light, or by connecting the Techstream.
* This system has a signal check function Test Mode Procedure
2. WARNING LIGHT AND INDICATOR LIGHT BULB CHECK

(a) Release the parking brake lever.





CAUTION:
When releasing the parking brake, set the chocks to hold the vehicle for safety.

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

(b) When the ignition switch is turned to ON, check that the ABS and BRAKE warning lights, and the VSC OFF, TRAC OFF, SLIP and AUTO LSD 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 and BRAKE warning light circuits, and the VSC OFF, TRAC OFF, SLIP, and AUTO LSD indicator light circuits.

If the indicator remains on, proceed to troubleshooting for the light circuit below.