EPB ECU sets DTC if EPB switch circuit or wiring has problem.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Switch signal monitoring | 1. EPB switch cirucit open/short circuit 2. Faulty EPB switch 3. Driver abnormal switch control (too much activation, pull or push for long time or slowly push/pull switch) |
Enable conditions |
•
EPB is awake, battery voltage is in normal range | |
Threshold value |
•
Switch signal is abnormal for more than 2seconds
•
Switch is disconnected for more than 2seconds
•
Switch signal is apply or relase for more than 90 seconds (For apply, vehicle has to be stationary) | |
Fail Safe |
•
EPB function using switch inhibited |
