Symptom Chart

CAUTION:

ASC may operate in the following conditions without hard braking: Low mu road surface, high-speed turn, and bumpy road surface. When asking the customers, confirm that they have/have not encountered ABS operation in corresponding conditions.
During ASC operation, the brake pedal is pulled forward gradually, and the noise occurs at the same time. This is because the brake line pressure varies intermittently to prevent the wheel lock, and not a system malfunction.

CAUTION: During diagnosis, a diagnostic trouble code associated with other system may be set when the ignition switch is turned on with connector(s) disconnected. On completion, confirm all systems for diagnostic trouble code(s). If diagnostic trouble code(s) are set, erase them all.

SYMPTOM CHART

Trouble symptom		Inspection procedure number
Scan tool communication with ABS/TCL/Skid control system is impossible.	Scan tool communication with all systems are impossible.	Refer to TROUBLESHOOTING .
	Scan tool communication only with ABS/TCL/Skid control system is impossible.	INSPECTION PROCEDURE 1: SCAN TOOL COMMUNICATION ONLY WITH ABS/TCL/SKID CONTROL SYSTEM IS IMPOSSIBLE.
ASC OFF indicator light flashes at a rate of 2Hz.		INSPECTION PROCEDURE 2: ASC OFF DISPLAY FLASHES AT A RATE OF 2HZ.
Brake warning light stays ON with the parking brake lever released.		INSPECTION PROCEDURE 3: BRAKE WARNING LIGHT STAYS ON WITH THE PARKING BRAKE LEVER RELEASED.
ABS warning light does not illuminate when ignition switch is turned to the ON position (Engine stopped).		INSPECTION PROCEDURE 4: ABS WARNING LIGHT DOES NOT ILLUMINATE WHEN IGNITION SWITCH IS TURNED TO THE ON POSITION (ENGINE STOPPED).
Brake warning light does not illuminate when the ignition switch is turned to ON position (Engine stopped).		INSPECTION PROCEDURE 5: BRAKE WARNING LIGHT DOES NOT ILLUMINATE WHEN THE IGNITION SWITCH IS TURNED TO ON POSITION (ENGINE STOPPED).
ABS warning light stays ON after the engine is started.		INSPECTION PROCEDURE 6: ABS WARNING LIGHT STAYS ON AFTER THE ENGINE IS STARTED.
ASC warning display stays ON after the engine is started.		INSPECTION PROCEDURE 7: ASC WARNING DISPLAY STAYS ON AFTER THE ENGINE IS STARTED.
ASC OFF display or ASC OFF light stays ON after the engine is started.		INSPECTION PROCEDURE 8: ASC OFF DISPLAY OR ASC OFF LIGHT STAYS ON AFTER THE ENGINE IS STARTED.
ASC Operation Display Stays ON after the Engine is Started.		INSPECTION PROCEDURE 9: ASC OPERATION DISPLAY STAYS ON AFTER THE ENGINE IS STARTED.
After ASC OFF switch is turned OFF, TCL/Skid control system cannot be disabled.		INSPECTION PROCEDURE 10: AFTER ASC OFF SWITCH IS TURNED OFF, TCL/SKID CONTROL SYSTEM CANNOT BE DISABLED.
Abnormality in brake operation		INSPECTION PROCEDURE 11: ABNORMALITY IN BRAKE OPERATION
ASC system does not operate or faulty ASC operate.		INSPECTION PROCEDURE 12: ASC SYSTEM DOES NOT OPERATE OR FAULTY ASC OPERATE.
ASC-ECU power supply circuit system		INSPECTION PROCEDURE 13: ASC-ECU POWER SUPPLY CIRCUIT SYSTEM
Steering wheel sensor power supply circuit system		INSPECTION PROCEDURE 14: STEERING WHEEL SENSOR POWER SUPPLY CIRCUIT SYSTEM
HSA (Hill Start Assist) does not work.		INSPECTION PROCEDURE 15: HSA (HILL START ASSIST) DOES NOT WORK.
HSA (Hill Start Assist) works on a flat road.		INSPECTION PROCEDURE 16: HSA (HILL START ASSIST) WORKS ON A FLAT ROAD.
The initial check sound of hydraulic unit is loud.		INSPECTION PROCEDURE 17: THE INITIAL CHECK SOUND OF HYDRAULIC UNIT IS LOUD.