C1310

C1259, C1310

Description
The brake ECU communicates with the HV ECU and controls braking force according to the motor's regenerative force.

The brake ECU sends enhanced VDC signal to the HV ECU and inputs operating signal from the HV control ECU.

The brake ECU uses CAN communication for communication with the HV ECU. If a part of Electronically Controlled Brake control by fail safe function.

C1259 is stored if the ignition switch ON with the HV battery service plug disconnected.

DTC Logic:

NOTE:
This DTC is output from the brake ECU when the HV ECU sends a malfunction signal to the brake ECU.

Diagnosis Procedure

1.CHECK HYBRID CONTROL SYSTEM
Check if the hybrid control system DTC is output.
DTC is not output >> Replace HV ECU.
DTC is output >> Inspect hybrid control system.

Special Repair Requirement

1.ZERO ADJUSTMENT FOR EACH SENSOR AND OFFSET LEANING FOR LINEAR SOLENOID VALVE
After erasing brake ECU memories, perform zero adjustment of following sensors and initialization of linear solenoid valve.
^ Steering angle sensor: BRC-9, "PERFORM ZERO POINT OF STEERING ANGLE SENSOR: Description". Testing and Inspection
^ Yaw rate/side/decel G sensor: BRC-8, "PERFORM ZERO POINT OF YAW RATE/SIDE/DECEL G SENSOR: Description". Testing and Inspection
^ Brake stroke sensor: BRC-9, "PERFORM ADJUSTMENT OF STROKE SENSOR: Description". Perform Adjustment of Stroke Sensor
^ Linear solenoid valve: BRC-7, "PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION: Description". Perform Initialization of Linear Solenoid Valve and Calibration
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