DTC C13A2: Engine Switch/Power Switch Malfunction [09/2018 - ]: Procedure

1. Turn the engine 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. Turn the engine switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   X67-4 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR IG POWER SOURCE CIRCUIT 

Result: 

OK 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2018 - ]

   Chassis > Electric Parking Brake > Clear DTCs 

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

   Refer to DTC CHECK / CLEAR [09/2018 - ]

   Chassis > Electric Parking Brake > Trouble Codes 

   Result

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

Result: 

A 

REPLACE PARKING BRAKE ECU ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023]  , or refer to  REMOVAL [05/2023 - ] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 04/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2020 - 05/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2023 - ]