Electronically Controlled Brake System

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1259/58,C1310/51: HV System Regenerative Malfunction
C1310/51 - Malfunction in HV system

DESCRIPTION

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

The skid control ECU sends Enhanced-VSC signals to the hybrid vehicle control ECU and inputs operating signals from the hybrid vehicle control ECU.

The skid control ECU uses CAN communication for communication with the hybrid vehicle control ECU. If a communication malfunction is memorized, the skid control ECU prohibits Enhanced-VSC operation and a part of electronically controlled brake system control by fail-safe function.

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





HINT
These DTCs will be output from the skid control ECU when the hybrid vehicle control ECU sends a malfunction signal to the skid control ECU.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HYBRID CONTROL SYSTEM

(a) Check if the hybrid control system DTC is output Hybrid Control System.

Result:





B -- INSPECT HYBRID CONTROL SYSTEM Hybrid Control System

A -- REPLACE HYBRID VEHICLE CONTROL ECU Removal