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+ signals to the power management control ECU and inputs 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 memorized, the skid control ECU prohibits VSC+ operation and a part of electronically controlled brake system control by 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 Code 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 (Hybrid vehicle 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 (Hybrid vehicle control ECU)

Tech Tips

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

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HYBRID CONTROL SYSTEM


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

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

    B

    INSPECT HYBRID CONTROL SYSTEM Click here

    A

    REPLACE POWER MANAGEMENT CONTROL ECU Click here