DTC C13A6: Open or Short Circuit in Motor [02/2019 - 10/2019]: Procedure

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Enter the following menus: Chassis / Electric Parking Brake / Data List.
6. Read the Data List according to the display on the Techstream.

   Chassis > Electric Parking Brake > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   RH Actuator Current Status	RH Actuator Current Status	Valid or Inval	Valid	-
   LH Actuator Current Status	LH Actuator Current Status	Valid or Inval	Valid	-

   Chassis > Electric Parking Brake > Data List 

   Tester Display
   RH Actuator Current Status
   LH Actuator Current Status

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the parking brake wire assembly.
2. Check the parking brake wire assembly for damage.

   OK

   No damage.

   HINT: 

   If damaged, there may be a short in the wire harness or a short to ground.

3. Inspect the parking brake wire assembly.

   Standard Resistance

   RH
   
   

   Tester Connection	Condition	Specified Condition
   MM2-2 - M49-1 (RE-)	Always	Below 1 Ω
   MM2-2 - M49-2 (RE+)	Always	10 kΩ or higher
   MM2-2 or M49-1 (RE-) - Body ground	Always	10 kΩ or higher
   MM2-1 - M49-2 (RE+)	Always	Below 1 Ω
   MM2-1 - M49-1 (RE-)	Always	10 kΩ or higher
   MM2-1 or M49-2 (RE+) - Body ground	Always	10 kΩ or higher

   LH
   
   

   Tester Connection	Condition	Specified Condition
   NN2-2 - N57-1 (LE-)	Always	Below 1 Ω
   NN2-2 - N57-2 (LE+)	Always	10 kΩ or higher
   NN2-2 or N57-1 (LE-) - Body ground	Always	10 kΩ or higher
   NN2-1 - N57-2 (LE+)	Always	Below 1 Ω
   NN2-1 - N57-1 (LE-)	Always	10 kΩ or higher
   NN2-1 or N57-2 (LE+) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE PARKING BRAKE WIRE ASSEMBLY 

Result: 

OK 

See step  3

1. Turn the ignition switch off.
2. Make sure the parking brake wire assembly is securely installed.
3. Disconnect the M36 parking brake ECU assembly connector.
4. Disconnect the M49 or N57 parking brake actuator assembly connector.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   RH
   
   

   Tester Connection	Condition	Specified Condition
   M36-1 (MRR+) - M49-2 (RE+)	Always	Below 1 Ω
   M36-3 (MRR-) - M49-1 (RE-)	Always	Below 1 Ω
   M36-1 (MRR+) or M49-2 (RE+) - Body ground	Always	10 kΩ or higher
   M36-3 (MRR-) or M49-1 (RE-) - Body ground	Always	10 kΩ or higher

   LH
   
   

   Tester Connection	Condition	Specified Condition
   M36-4 (MRL+) - N57-2 (LE+)	Always	Below 1 Ω
   M36-6 (MRL-) - N57-1 (LE-)	Always	Below 1 Ω
   M36-4 (MRL+) or N57-2 (LE+) - Body ground	Always	10 kΩ or higher
   M36-6 (MRL-) or N57-1 (LE-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Remove the parking brake actuator assembly.

   Refer to REMOVAL [11/2018 - ]

2. Inspect the parking brake actuator assembly.

   Refer to INSPECTION [11/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE PARKING BRAKE ECU ASSEMBLY. Refer to  REMOVAL [02/2019 - 10/2019] 

Result: 

NG 

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2018 - ]