Electric Parking Brake System AUTO Function Circuit [04/2018 - 08/2020]: 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 DTC is not output A DTC is output B
Result:
B
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2020]
Result:
A
See step 2
- Check for DTCs.
- CHECK DTC (HYBRID CONTROL SYSTEM)
- Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result
Result Proceed to DTC is not output A DTC is output B
Result:
A
REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY). Refer to REMOVAL [04/2018 - 08/2021]
Result:
B
GO TO HYBRID CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - 08/2020]
- Check for DTCs.