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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Brakes >> Parking Brake System >> Electric Parking Brake (Diagnostic Codes & Circuit Tests) >> Electric Parking Brake System >> DTC C13A0/11: Open in Power Supply Relay Circuit; DTC C13A5/41: Electric Current of Motor; DTC C13B0: Electric Parking Brake ECU Malfunction >> Description

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

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

DTC Code Detection Condition Trouble Area
C13A0/11 Both of following conditions are met:
  1. Electric parking brake ECU is ON (engine switch is on (IG), or 15 sec. after engine switch is off and electric parking brake switch lock control is operating)
  2. Electric parking brake ECU's power source relay is open for approx. 0.5 sec.
Electric parking brake ECU
C13A5/41 All of following conditions are met:
  1. Electric parking brake ECU is ON (engine switch is on (IG), or 15 sec. after engine switch is off and electric parking brake switch lock control is operating)
  2. Electric parking brake ECU's internal current is abnormal
  3. When parking brake is operating, problem occurs for 0.3 sec.; when parking brake is not operating, problem occurs for 0.5 sec.
Electric parking brake ECU
C13B0 All of following conditions are met:
  1. Electric parking brake ECU is ON (engine switch is on (IG), or 15 sec. after engine switch is off and electric parking brake switch lock control is operating)
  2. Electric parking brake ECU's internal voltage is abnormal, or EEPROM is malfunctioning
  3. Problem occurs for approx. 0.5 sec.
Electric parking brake ECU