Problem Symptoms Table [04/2014 - 08/2017]

If there are no DTCs output and the problem still occurs, check the suspected areas for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page.

NOTE:

When replacing the skid control ECU (brake actuator assembly), sensors, etc., turn the ignition switch off.

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table.
Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

ANTI-LOCK BRAKE SYSTEM

Symptom	Suspected Area	Link
ABS and/or EBD does not operate	Check again to see if DTCs are output. (If DTCs are output, perform diagnosis based on the DTCs that are output.)	Refer to DTC CHECK / CLEAR [04/2014 - 08/2017]
	Power source circuit (low power supply voltage malfunction)	Refer to DTC C1241: Low Power Supply Voltage Malfunction [04/2014 - 08/2016] Refer to DTC C1241: Low Power Supply Voltage Malfunction [08/2016 - 08/2017]
	Power source circuit (high power supply voltage malfunction)	Refer to DTC C1417: High Power Supply Voltage Malfunction [04/2014 - 08/2016] Refer to DTC C1417: High Power Supply Voltage Malfunction [08/2016 - 08/2017]
	Front speed sensor circuit (output malfunction)	Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction [04/2014 - 08/2017]
	Rear speed sensor circuit (output malfunction)	Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction [04/2014 - 08/2017]
	Front speed sensor circuit (open or short malfunction)	Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit [04/2014 - 08/2017]
	Rear speed sensor circuit (open or short malfunction)	Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit [04/2014 - 08/2017]
	Front speed sensor circuit (comparison malfunction)	Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction [04/2014 - 08/2017]
	Rear speed sensor circuit (comparison malfunction)	Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction [04/2014 - 08/2017]
	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 [08/2013 - ]
	If the symptom still occurs even after the suspected areas listed above have been inspected and proved to be normal, replace the skid control ECU (Brake actuator assembly).	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
ABS and/or EBD does not operate efficiently	Check again to see if DTCs are output. (If DTCs are output, perform diagnosis based on the DTCs that are output.)	Refer to DTC CHECK / CLEAR [04/2014 - 08/2017]
	Front speed sensor circuit (output malfunction)	Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction [04/2014 - 08/2017]
	Rear speed sensor circuit (output malfunction)	Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction [04/2014 - 08/2017]
	Front speed sensor circuit (open or short malfunction)	Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit [04/2014 - 08/2017]
	Rear speed sensor circuit (open or short malfunction)	Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit [04/2014 - 08/2017]
	Front speed sensor circuit (comparison malfunction)	Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction [04/2014 - 08/2017]
	Rear speed sensor circuit (comparison malfunction)	Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction [04/2014 - 08/2017]
	Stop light switch circuit	Refer to DTC C1425: Open in Stop Light Switch Circuit [04/2014 - 08/2017]
	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 [08/2013 - ]
	If the symptom still occurs even after the suspected areas listed above have been inspected and proved to be normal, replace the skid control ECU (Brake actuator assembly).	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
ABS sensor DTC check cannot be done	Check again to see if DTCs are output. (If DTCs are output, perform diagnosis based on the DTCs that are output.)	Refer to DTC CHECK / CLEAR [04/2014 - 08/2017]
	TC and CG terminal circuit	Refer to TC and CG Terminal Circuit [04/2014 - 08/2016] Refer to TC and CG Terminal Circuit [08/2016 - 08/2017]
	If the symptom still occurs even after the suspected areas listed above have been inspected and proved to be normal, replace the skid control ECU (Brake actuator assembly).	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
ABS warning light abnormal (Remains on)	ABS warning light circuit	Refer to ABS Warning Light Remains ON [04/2014 - 08/2016] Refer to ABS Warning Light Remains ON [08/2016 - 08/2017]
ABS warning light abnormal (Remains on)	Skid control ECU (Brake actuator assembly)	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
ABS warning light abnormal (Does not come on)	ABS warning light circuit	Refer to ABS Warning Light does not Come ON [04/2014 - 08/2016] Refer to ABS Warning Light does not Come ON [08/2016 - 08/2017]
ABS warning light abnormal (Does not come on)	Skid control ECU (Brake actuator assembly)	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
Brake warning light abnormal (Remains on)	Brake warning light circuit	Refer to Brake Warning Light Remains ON [04/2014 - 08/2016] Refer to Brake Warning Light Remains ON [08/2016 - 08/2017]
Brake warning light abnormal (Remains on)	Skid control ECU (Brake actuator assembly)	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
Brake warning light abnormal (Does not come on)	Brake warning light circuit	Refer to Brake Warning Light does not Come ON [04/2014 - 08/2016] Refer to Brake Warning Light does not Come ON [08/2016 - 08/2017]
Brake warning light abnormal (Does not come on)	Skid control ECU (Brake actuator assembly)	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]
Sensor check cannot be done	TS and CG terminal circuit	Refer to TS and CG Terminal Circuit [04/2014 - 08/2016] Refer to TS and CG Terminal Circuit [08/2016 - 08/2017]
Sensor check cannot be done	Skid control ECU (Brake actuator assembly)	Refer to REMOVAL [04/2014 - 08/2015] Refer to REMOVAL [08/2015 - 08/2017]