If abnormal EPB switch signal is detected, EPB ECU sets DTC C1501.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal Monitoring | 1. EPB Switch Circuit Open/Short 2. Defected EPB Switch | |
Threshold Value | Switch Open(Case 1) |
•
Switch wiring circuit open for more than 2 sec. | |
Switch Short to GND(Case 2) |
•
Short circuit to GND is detected in the switch for more than 2 sec. | ||
Switch Short to BAT(Case 3) |
•
Short circuit to battery is detected in the switch for more than 2 sec. | ||
Circuit shorted each other(Case 4) |
•
Switch wiring circuit short to each other for more than 2 sec. | ||
Switch Stuck(Case 5) |
•
Switch stuck "ON" is detected for more than 90 sec. on under 4 km/h(Approx. 2.5 mph) of vehicle speed | ||
Fail Safe |
•
Case 1,2,3,4 - Parking Brake Apply/Release/Dynamic Braking/Dynamic Braking(ESP) inhibited
•
Case 5 - Parking Brake Apply/Dynamic Braking/Dynamic Braking(ESP) inhibited | ||
Warning Indicator Lamp Status |
•
Warning Indicator Lamp "ON" | ||
Clear Condition |
•
Ignition "OFF" and then "ON" or Return to normal state | ||
