Diagnosis System

DIAGNOSIS SYSTEM

1. DIAGNOSIS

a. If the skid control ECU detects a malfunction, the ABS, BRAKE, VSC OFF indicator, SLIP indicator lights come on in accordance with the trouble area to warn the driver.







The table indicates which lights come on when there is a malfunction in a particular function.

HINT:
- The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting the intelligent tester.
- This system has a sensor signal check function. 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 VSC OFF indicator light, or by connecting the intelligent tester.

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, VSC OFF indicator light, BRAKE warning light, downhill assist control indicator light, SLIP indicator light and AUTO LSD 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 to the image indicated.

Trouble area
ABS warning light circuit
BRAKE warning light circuit
Downhill assist control indicator light circuit
VSC OFF indicator light circuit
SLIP indicator light circuit
AUTO LSD indicator light circuit