Problem Symptoms Table

If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting procedure.

NOTE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.

HINT:

Inspect the fuse and relay before investigating the suspected areas as shown in the table below. Inspect each malfunction circuit in numerical order for the corresponding symptom.

Anti-lock brake system:

PROBLEM SYMPTOMS CHART

Symptom	Suspected Area	See
ABS does not operate	1. Check the DTC again and make sure that the normal system code is output.	DTC CHECK / CLEAR
	2. IG power source circuit	DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE
	3. Front speed sensor circuit	DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC); DTC C1275/75 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1276/76 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC)
	4. Rear speed sensor circuit	DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC); DTC C1277/77 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1278/78 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC)
	5. Check the brake actuator with Techstream. If abnormal, check the hydraulic circuit for leakage.	ON-VEHICLE INSPECTION
	6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly.	REMOVAL
ABS does not operate efficiently	1. Check the DTC again and make sure that the normal system code is output.	DTC CHECK / CLEAR
	2. Front speed sensor circuit	DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC); DTC C1275/75 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1276/76 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC)
	3. Rear speed sensor circuit	DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC); DTC C1277/77 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1278/78 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC)
	4. Stop light switch circuit	DTC C1249/49 OPEN IN STOP LIGHT SWITCH CIRCUIT
	5. Check the brake actuator with Techstream. If abnormal, check that hydraulic circuit for leakage.	ON-VEHICLE INSPECTION
	6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly.	REMOVAL
ABS warning light abnormal (Remains on)	1. ABS warning light circuit	ABS WARNING LIGHT REMAINS ON
ABS warning light abnormal (Remains on)	2. Brake actuator assembly	BRAKE ACTUATOR (W/O VSC)
ABS warning light abnormal (Does not come on)	1. ABS warning light circuit	ABS WARNING LIGHT DOES NOT COME ON
ABS warning light abnormal (Does not come on)	2. Brake actuator assembly	BRAKE ACTUATOR (W/O VSC)
BRAKE warning light abnormal (Remains on)	1. BRAKE warning light circuit	BRAKE WARNING LIGHT REMAINS ON
BRAKE warning light abnormal (Remains on)	2. Brake actuator assembly	BRAKE ACTUATOR (W/O VSC)
BRAKE warning light abnormal (Does not come on)	1. BRAKE warning light circuit	BRAKE WARNING LIGHT DOES NOT COME ON
BRAKE warning light abnormal (Does not come on)	2. Brake actuator assembly	BRAKE ACTUATOR (W/O VSC)
DTC check cannot be done	1. Check the DTC again and make sure that the normal system code is output.	DTC CHECK / CLEAR
	2. TC and CG terminal circuit	TC AND CG TERMINAL CIRCUIT
	3. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly.	REMOVAL
Test mode (Signal check) cannot be done	1. TS and CG terminal circuit	TS AND CG TERMINAL CIRCUIT
Test mode (Signal check) cannot be done	2. Brake actuator assembly	BRAKE ACTUATOR (W/O VSC)