DTC C13A9: Brake System Malfunction [04/2018 - 08/2019]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
- Check for DTCs.
Chassis > ABS/VSC/TRAC > Trouble Codes
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
B
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2019]
Result:
A
See step 2
- Check for DTCs.
- CHECK DTC (ELECTRIC PARKING BRAKE SYSTEM)
- Clear the DTCs.
Chassis > Electric Parking Brake > Clear DTCs
- Turn the power switch off.
- Check for DTCs.
Chassis > Electric Parking Brake > Trouble Codes
Result
Result Proceed to DTCs are output A DTCs are not output B
Result:
A
REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY). Refer to REMOVAL [04/2018 - 08/2021]
Result:
B
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]
- Clear the DTCs.