ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A0/11, C13A5/41, C13B0

DTC Code DTC Name
C13A0/11 Open in Power Supply Relay Circuit
C13A5/41 Electric Current of Motor
C13B0 Electric Parking Brake ECU Malfunction

DESCRIPTION

The parking brake ECU assembly performs the lock/release operation of the parking brake based on signals from the electric parking brake switch assembly, or instruction signals from other systems via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area
C13A0/11 Open in Power Supply Relay Circuit

Both of following conditions are met:


  1. Engine switch on (IG) or electric parking brake switch assembly pulled to lock side with engine switch off.

  2. Parking brake ECU assembly's power source relay is open for approximately 0.5 seconds

 Parking brake ECU assembly
C13A5/41 Electric Current of Motor

All of following conditions are met:


  1. Engine switch on (IG) or electric parking brake switch assembly pulled to lock side with engine switch off.

  2. Parking brake ECU assembly's internal current is abnormal

  3. When parking brake is operating, problem occurs for approximately 0.3 seconds.; when parking brake is not operating, problem occurs for approximately 0.5 seconds.

 Parking brake ECU assembly
C13B0 Electric Parking Brake ECU Malfunction

All of following conditions are met:


  1. Engine switch on (IG) or electric parking brake switch assembly pulled to lock side with engine switch off.

  2. Parking brake ECU assembly's internal voltage is abnormal, or EEPROM is malfunctioning

  3. Problem occurs for approximately 0.5 seconds

 Parking brake ECU assembly
DTC Detection Conditions: C13A0/11
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Engine switch on (IG) ○ -
Electric parking brake switch assembly pulled to lock side with engine switch off - ○
Malfunction Status Parking brake ECU assembly's power source relay is open ○ ○
Detection Time Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C13A5/41
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition Engine switch on (IG) ○ - ○ -
Electric parking brake switch assembly pulled to lock side with engine switch off - ○ - ○
Malfunction Status Parking brake ECU assembly's internal current is abnormal (When parking brake is operating) ○ ○ - -
Parking brake ECU assembly's internal current is abnormal (When parking brake is not operating) - - ○ ○
Detection Time Approximately 0.3 seconds Approximately 0.3 seconds Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C13B0
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition Engine switch on (IG) ○ - ○ -
Electric parking brake switch assembly pulled to lock side with engine switch off - ○ - ○
Malfunction Status Parking brake ECU assembly's internal voltage is abnormal ○ ○ - -
EEPROM is malfunctioning - - ○ ○
Detection Time Approximately 0.5 seconds Approximately 0.5 seconds Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

CAUTION / NOTICE / HINT

Note

If the parking brake ECU assembly is replaced, perform the "Reset Memory" and "Acquire Tension Sensor Zero Point" procedures.

Click here

PROCEDURE


  1. REPLACE PARKING BRAKE ECU ASSEMBLY


    1. Replace parking brake ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END