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Home >> Kia >> 2021 >> Niro LXS >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> ESC/AHB Diagnosis (HEV) (2 Of 2) >> DTC C1542-01: Brake Circuit Error >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal monitoring
  • Poor connector connection
  • Faulty brake switch circuit
  • Faulty brake switch
  • Faulty IBAU
Enable Condition
  • Ignition "ON"
Threshold Value Case1
  • Brake switch is "ON" for 6 minutes under vehicle speed is over 20 km/h (12.5 mph), brake pedal value is less than 6 mm, change in brake pedal value is less than 2 mm, and brake pedal pressure is less than 0.5bar condition (Short to power)
Case2
  • Brake switch is "OFF" for 3s under brake pedal value is over 25 mm, change in brake pedal value is over 5 mm and brake pedal pressure is more than 5bar condition (Open or short to ground)
Warning Lamp
  • ESC (ESP) warning indicator lamp "ON"
Disable Condition
  • Ignition "OFF" and then "ON" and brake lamp switch "ON" signal is received and pressure sensor signal is over 15bar for more than 1s and then brake lamp switch "OFF" signal is received and pressure sensor signal is below 7bar for more than 1s.