The EPB is the acronym for Electric Parking Brake system. Instead of using pedal or lever, using switch can apply parking brake. Drive controls switch → switch signal to ECU → ECU activate actuator → parking brake Apply/Release. When EPB switch is pulled, parking brake gets Applied. When EPB switch is pushed down, parking brake is released.
The EPB ECU sets DTC B1611 if TCU CAN message has not been received through the CAN signal.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Monitoring CAN messages. | 1. Faulty TCU System 2. Open or short in PCM communication line |
Enable conditions |
•
IG ON
•
Battery voltage is between 9.5V ~ 17V
•
No CAN Bus off | |
Threshold value |
•
TCU message(gear position, etc)is not received for 0.5 sec | |
Fail-Safe |
•
Automatic release function inhibited |
