Electric Parking Brake System AUTO Function Circuit [08/2020 - 12/2021]: Procedure

1. Check the electronically controlled brake system (w/o Vacuum Brake Booster) DTCs and check if speed sensor system or stop light switch system DTCs are stored.

   Refer to DTC CHECK / CLEAR [02/2019 - 12/2021]

   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 (w/o Vacuum Brake Booster). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 12/2021] 

Result: 

A 

See step  2

1. Check the DTCs.

   for NICKEL METAL HYDRIDE BATTERY: Refer to DTC CHECK / CLEAR [02/2019 - 10/2022]

   for LITHIUM-ION BATTERY: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

Result: 

A 

REPLACE PARKING BRAKE ECU ASSEMBLY. Refer to  REMOVAL [08/2020 - 12/2021] 

Result: 

B 

GO TO HYBRID CONTROL SYSTEM 

for NICKEL METAL HYDRIDE BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]

for LITHIUM-ION BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2020 - ]