Diagnosis System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. DIAGNOSIS





(a) If the skid control ECU detects a malfunction, the ABS warning light, VSC TRAC warning light, BRAKE warning light, VSC OFF indicator light and/or SLIP indicator light come on in accordance with the trouble area to warn the driver.
The table below indicates which lights come on when there is a malfunction in a particular function.

(b) The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting the 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 the DLC3 and observing the blinking of the ABS warning light and SLIP indicator light, or by connecting the Techstream.
2. WARNING LIGHT AND INDICATOR LIGHT CHECK





(a) Release the parking brake.
NOTE: 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, BRAKE warning light, VSC OFF indicator light, SLIP indicator light and AUTO LSD indicator light come on when the ignition switch is turned to 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.