Problem Symptoms Table [11/2017 - 09/2020]
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 Service Information.
NOTE:
When replacing the skid control ECU (brake actuator assembly), sensors, etc., turn the engine 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.
VEHICLE STABILITY CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| ABS, BA 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 [11/2017 - 09/2020] |
| Power source circuit (low power supply voltage malfunction) | Refer to DTC C1241: Low or High Power Supply Voltage [11/2017 - 09/2020] | |
| Power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: IG1 Voltage Supply too High [11/2017 - 09/2020] | |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Circuit Output; DTC C1414: Front Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| Front speed sensor circuit (comparison malfunction) | Refer to DTC C1401: Malfunction in Front Speed Sensor RH Circuit; DTC C1402: Malfunction in Front Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1403: Malfunction in Rear Speed Sensor RH Circuit; DTC C1404: Malfunction in Rear Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Check the skid control ECU (brake actuator assembly) with the Techstream. (Check skid control ECU (brake actuator assembly) operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION [09/2014 - 09/2020] | |
| 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 [11/2017 - 11/2021] | |
| ABS, BA 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 [11/2017 - 09/2020] |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Circuit Output; DTC C1414: Front Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| Front speed sensor circuit (comparison malfunction) | Refer to DTC C1401: Malfunction in Front Speed Sensor RH Circuit; DTC C1402: Malfunction in Front Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1403: Malfunction in Rear Speed Sensor RH Circuit; DTC C1404: Malfunction in Rear Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Stop light switch circuit (open malfunction) | Refer to DTC C1425: Open in Stop Switch Circuit [11/2017 - 10/2018] , or refer to DTC C1425: Open in Stop Switch Circuit [10/2018 - 09/2020] | |
| Stop light switch circuit (stuck off malfunction) | Refer to DTC C1426: Stop Light Switch OFF Stuck Malfunction [11/2017 - 10/2018] , or refer to DTC C1426: Stop Light Switch OFF Stuck Malfunction [10/2018 - 09/2020] | |
| Check the skid control ECU (brake actuator assembly) with the Techstream. (Check skid control ECU (brake actuator assembly) operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION [09/2014 - 09/2020] | |
| 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 [11/2017 - 11/2021] | |
| ABS warning light abnormal (remains on) | ABS warning light circuit | Refer to ABS Warning Light Remains ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| ABS warning light abnormal (does not come on) | ABS warning light circuit | Refer to ABS Warning Light does not Come ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| Brake warning light abnormal (remains on) | Brake warning light circuit | Refer to Brake Warning Light Remains ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| Brake warning light abnormal (does not come on) | Brake warning light circuit | Refer to Brake Warning Light does not Come ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| VSC and/or TRAC 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 [11/2017 - 09/2020] |
| Power source circuit (low power supply voltage malfunction) | Refer to DTC C1241: Low or High Power Supply Voltage [11/2017 - 09/2020] | |
| Power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: IG1 Voltage Supply too High [11/2017 - 09/2020] | |
| Check the hydraulic circuit for leaks | - | |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Circuit Output; DTC C1414: Front Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| 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 [11/2017 - 09/2020] | |
| Front speed sensor circuit (comparison malfunction) | Refer to DTC C1401: Malfunction in Front Speed Sensor RH Circuit; DTC C1402: Malfunction in Front Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1403: Malfunction in Rear Speed Sensor RH Circuit; DTC C1404: Malfunction in Rear Speed Sensor LH Circuit [11/2017 - 09/2020] | |
| Yaw rate and acceleration sensor circuit (zero point malfunction) | Refer to DTC C1210: Zero Point Calibration of Yaw Rate Sensor undone; DTC C1336: Zero Point Calibration of Deceleration Sensor undone [11/2017 - 09/2020] | |
| Yaw rate and acceleration sensor circuit (power supply malfunction) | Refer to DTC C1381: Abnormal Power Supply Voltage in Yaw Rate and/or Deceleration Sensor [11/2017 - 09/2020] | |
| Acceleration sensor circuit (comparison malfunction) | Refer to DTC C1420: Acceleration Sensor Malfunction [11/2017 - 09/2020] | |
| Yaw rate sensor circuit (comparison malfunction) | Refer to DTC C1436: Malfunction in Yaw Rate Sensor [11/2017 - 09/2020] | |
| Acceleration sensor circuit (stuck or output malfunction) | Refer to DTC C1232: Deceleration Sensor; DTC C1243: Deceleration Sensor Stuck; DTC C1245: Abnormal Output in Deceleration Sensor [11/2017 - 09/2020] | |
| Yaw rate and Acceleration sensor circuit (internal malfunction) | Refer to DTC C1419: Deceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit [11/2017 - 09/2020] | |
| Steering angle sensor circuit (zero point malfunction) | Refer to DTC C1290: Abnormal Zero Point of Steering Angle Sensor [11/2017 - 09/2020] | |
| Steering angle sensor circuit (zero point initialization or calibration malfunction) | Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized [11/2017 - 09/2020] | |
| Steering angle sensor circuit (power supply malfunction) | Refer to DTC C1432: Steering Angle Sensor Power Source Voltage [11/2017 - 09/2020] | |
| Steering angle sensor circuit (output malfunction) | Refer to DTC C1434: Steering Angle Sensor Output [11/2017 - 09/2020] | |
| Steering angle sensor circuit (internal malfunction) | Refer to DTC C1433: Steering Angle Sensor Internal Circuit [11/2017 - 09/2020] | |
| 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 [11/2017 - 11/2021] | |
| VSC OFF switch abnormal | VSC OFF switch circuit | Refer to VSC OFF Switch Circuit [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| Slip indicator light abnormal (remains on) | Slip indicator light circuit | Refer to Slip Indicator Light Remains ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] | |
| Slip indicator light abnormal (does not come on) | Slip indicator light circuit | Refer to Slip Indicator Light does not Come ON [11/2017 - 09/2020] |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2017 - 11/2021] |