DTC C13A3: Open or Short Circuit in Lock Switch Circuit; DTC C13AB: Lock Switch Circuit Comparison [02/2019 - 12/2021]: Procedure

1. Remove the electric parking brake switch (integration control and panel assembly).

   Refer to REMOVAL [11/2018 - ]

2. Inspect the electric parking brake switch (integration control and panel assembly).

   Refer to INSPECTION [11/2018 - 12/2021]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ELECTRIC PARKING BRAKE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY). Refer to  REMOVAL [11/2018 - ] 

Result: 

OK 

See step  2

1. Disconnect the G32 electric parking brake switch (integration control and panel assembly) connector.
2. Disconnect the M35 parking brake ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M35-20 (LCK1) - G32-10 (LCK1)	Always	Below 5 Ω
   M35-15 (LCK2) - G32-21 (LCK2)	Always	Below 5 Ω
   M35-20 (LCK1) or G32-10 (LCK1) - Body ground	Always	10 kΩ or higher
   M35-15 (LCK2) or G32-21 (LCK2) - Body ground	Always	10 kΩ or higher
   G32-15 (E) - Body ground	Always	Below 5 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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. Turn the ignition switch to ON.
4. Perform a lock operation with the electric parking brake switch (integration control and panel assembly).

   HINT: 

   When the electric parking brake switch (integration control and panel assembly) is pulled and held for 1 second or more without being pulled fully to the lock side, one of the 2 linked contacts may turn on while the other one turns off causing this DTC to be stored (system is not malfunctioning).

5. 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 - ]