Diagnosis System

BRAKE CONTROL: ANTI-LOCK BRAKE SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

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





(a) Release the parking brake.

(b) If the skid control ECU detects a malfunction, the ABS warning light and brake warning light will come on to warn the driver. The table below indicates which light will come on when there is a malfunction in a particular function.





o: Light ON
- : Light OFF
- The DTCs are simultaneously stored in memory. The DTCs can be read by connecting the SST (09843-18043) between the TC and CG terminals of the DLC3 and observing the blinking pattern of the ABS warning light, or by connecting Techstream
ABS (Antilock Brake System).
- This system has a sensor signal check function (TEST MODE).

2. WARNING LIGHT INITIAL CHECK
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.





(a) Release the parking brake.

(b) Check that the ABS warning light and brake warning light come on when the ignition switch is turned on (IG) and go off in approximately 3 seconds.
(c) If the warning lights do not come on or remain on, inspect the ABS warning light circuit and/or brake warning light circuit.