ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1259/58, C1310/51

DTC Code DTC Name
C1259/58 HV System Regenerative Malfunction
C1310/51 Malfunction in HV system

DESCRIPTION

The skid control ECU communicates with the power management control ECU and controls braking force according to the motor's regenerative force.

The skid control ECU sends VSC (cooperative control with EPS) signals to the power management control ECU and receives operating signals from the power management control ECU.

The skid control ECU uses CAN communication for communication with the power management control ECU. If a communication malfunction is detected, the skid control ECU prohibits VSC (cooperative control with EPS) operation and a part of electronically controlled brake system control as a fail-safe function.

If the signals from the power management control ECU returned to normal, the warning light will go off and the DTCs C1259/58 and C1310/51 will be cleared.

DTC No. INF Code DTC Detection Condition Trouble Area
C1259/58 - The regeneration malfunction signal is input for at least 0.036 seconds when IG2 terminal voltage is 9.5 V or more for at least 2 seconds and communication with power management control ECU is valid. Power management control ECU
C1310/51 - The internal malfunction signal is input for at least 0.072 seconds when IG2 terminal voltage is 10.5 V or more for at least 2 seconds and communication with power management control ECU is valid. Power management control ECU

Tech Tips

These DTCs will be output from the skid control ECU when the power management control ECU sends a malfunction signal to the skid control ECU.

PROCEDURE


  1. CHECK HYBRID CONTROL SYSTEM


    1. Check if a hybrid control system DTC is output Click here.

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

    A

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    B

    INSPECT HYBRID CONTROL SYSTEM Click here