DTC C13A2: Engine Switch/Power Switch Malfunction [02/2019 - 12/2021]: Procedure

1. Turn the ignition switch off.
2. Disconnect the parking brake ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Parking Brake ECU Assembly)

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   M35-5 (IG) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Clear the DTCs.

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

   Chassis > Electric Parking Brake > Clear DTCs 

2. Turn the ignition switch off.
3. Check for DTCs.

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

   Chassis > Electric Parking Brake > Trouble Codes 

   Result

   Proceed to
   DTC is output
   DTC is not output

Result: 

DTC is output 

REPLACE PARKING BRAKE ECU ASSEMBLY. Refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021] 

Result: 

DTC is not output 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]