Diagnosis System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): DIAGNOSIS SYSTEM

1. DIAGNOSIS

(a) If the skid control ECU detects a malfunction, the ABS and/or BRAKE warning lights and the SLIP indicator lights come on in accordance with the trouble area to warn the driver.





(b) The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting Techstream.

(c) This system has a sensor signal check function Test Mode Procedure. The DTCs can be read by connecting SST (09843-18040) between terminals TS and CG of DLC3 and observing the blinking of the ABS warning light and SLIP indicator light, or by connecting Techstream.

2. WARNING LIGHT AND INDICATOR LIGHT CHECK

(a) Release the parking brake.





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

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

(b) Check that the ABS warning light, SLIP indicator light, BRAKE warning light and VSC OFF indicator light come on when the ignition switch is turned on, and go off in about 3 seconds.

HINT
If the lights do not illuminate, confirm whether the bulbs have burned out, and also check the wire harness between the skid control ECU and the combination meter.

If the light remains on, troubleshoot the effected light circuit by proceeding indicated below.