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Home >> Kia >> 2017 >> Optima SX >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake Diagnosis (Except HEV) >> DTC C1501-01: Switch Failure >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal Monitoring
  1. EPB Switch Circuit Open/Short
  2. Faulty EPB Switch
Threshold Value Switch Open (Case 1)
  • Switch wiring circuit open for more than 2s.
Switch Short to GND (Case 2)
  • Short circuit to GND is detected in the switch for more than 2s.
Switch Short to BAT (Case 3)
  • Short circuit to battery is detected in the switch for more than 2s.
Circuit shorted each other (Case 4)
  • Switch wiring circuit short to each other for more than 2s.
Switch Stuck (Case 5)
  • Switch stuck "ON" is detected for more than 90s. on under 4km/h (Approx. 2.5mph) 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