Problem Symptoms Table

Use the table below to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.

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 order for the corresponding symptom.

VEHICLE STABILITY CONTROL SYSTEM:

Symptom	Suspected Area	See
ABS, BA and/or EBD does not operate	Check the DTC again and make sure that the normal system code is output.	Refer to DTC CHECK / CLEAR
	IG power source circuit	Refer to DTC C1241/41: Low Battery Positive Voltage
	Front speed sensor circuit	Refer to 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 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)
	Rear speed sensor circuit	Refer to 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 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); 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)
	Check the brake actuator assembly with the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks.	Refer to ON-VEHICLE INSPECTION
	If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).	Refer to REMOVAL
ABS, BA and/or EBD does not operate efficiently	Check the DTC again and make sure that the normal system code is output.	Refer to DTC CHECK / CLEAR
	Front speed sensor circuit	Refer to 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 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)
	Rear speed sensor circuit	Refer to 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 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); 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)
	Stop light switch circuit	Refer to DTC C1249/49: Open in Stop Light Switch Circuit
	Check the brake actuator assembly with the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks.	Refer to ON-VEHICLE INSPECTION
	If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).	Refer to REMOVAL
DTC of ABS check cannot be done	Check the DTC again and make sure that the normal system code is output.	Refer to DTC CHECK / CLEAR
	TC and CG terminal circuit	Refer to TC and CG Terminal Circuit
	If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).	Refer to REMOVAL
VSC and/or TRAC does not operate	Check the DTC again and make sure that the normal system code is output.	Refer to DTC CHECK / CLEAR
	IG power source circuit	Refer to DTC C1241/41: Low Battery Positive Voltage
	Check the hydraulic circuit for leaks.	-
	Front speed sensor circuit	Refer to 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 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)
	Rear speed sensor circuit	Refer to 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 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); 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)
	Perform zero point calibration of the yaw rate and acceleration sensor.	Refer to CALIBRATION
	Yaw rate and acceleration sensor circuit (Calibration malfunction)	Refer to DTC C1210/36: Zero Point Calibration of Yaw Rate Sensor Undone; DTC C1336/39: Zero Point Calibration of Acceleration Sensor Undone
	Yaw rate and acceleration sensor circuit (Sensor malfunction)	Refer to DTC C1232/32: Stuck in Acceleration Sensor; DTC C0371/71: Yaw Rate Sensor (Test Mode DTC); DTC C1234/34: Yaw Rate Sensor Malfunction; DTC C1243/43: Acceleration Sensor Stuck Malfunction; DTC C1244/44: Open or Short in Acceleration Sensor Circuit; DTC C1245/45: Acceleration Sensor Output Malfunction; DTC C1279/79: Acceleration Sensor Output Voltage Malfunction (Test Mode DTC); DTC C1381/97: Acceleration Sensor Power Supply Voltage Malfunction
	Steering angle sensor circuit	Refer to DTC C1231/31: Steering Angle Sensor Circuit Malfunction
	If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).	Refer to REMOVAL
DTC of VSC check cannot be done	Check the DTC again and make sure that the normal system code is output.	Refer to DTC CHECK / CLEAR
	TC and CG terminal circuit	Refer to TC and CG Terminal Circuit
	If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).	Refer to REMOVAL
Sensor check cannot be done	TS and CG terminal circuit	Refer to TS and CG Terminal Circuit
Sensor check cannot be done	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
VSC OFF indicator light abnormal (Remains on)	VSC OFF indicator light circuit	Refer to VSC OFF Indicator Light Remains ON
VSC OFF indicator light abnormal (Remains on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
ABS warning light abnormal (Remains on)	ABS warning light circuit	Refer to ABS Warning Light Remains ON
ABS warning light abnormal (Remains on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
Brake warning light abnormal (Remains on)	Brake warning light circuit	Refer to Brake Warning Light Remains ON
Brake warning light abnormal (Remains on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
SLIP indicator light abnormal (Remains on)	SLIP indicator light circuit	Refer to Slip Indicator Light Remains ON
SLIP indicator light abnormal (Remains on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
VSC OFF indicator light abnormal (Does not come on)	VSC OFF indicator light circuit	Refer to VSC OFF Indicator Light does not Come ON
VSC OFF indicator light abnormal (Does not come on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
ABS warning light abnormal (Does not come on)	ABS warning light circuit	Refer to ABS Warning Light does not Come ON
ABS warning light abnormal (Does not come on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
Brake warning light abnormal (Does not come on)	Brake warning light circuit	Refer to Brake Warning Light does not Come ON
Brake warning light abnormal (Does not come on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
SLIP indicator light abnormal (Does not come on)	SLIP indicator light circuit	Refer to Slip Indicator Light does not Come ON
SLIP indicator light abnormal (Does not come on)	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL
Skid control buzzer abnormal	Skid control buzzer circuit	Refer to Skid Control Buzzer Circuit
Skid control buzzer abnormal	Brake actuator assembly (Skid control ECU)	Refer to REMOVAL