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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Abs/ESC Diagnosis (HEV) (1 Of 2)) >> DTC C1542-01: Brake Circuit Error >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Troubleshooting Condition Possible Cause
Main Action
  • Monitor the brake switch signal
  1. Blown Fuse
  2. Defected brake switch
  3. Poor power supply for brake switch
  4. Short to power in brake switch
  5. Open or short to ground in brake switch
  6. Poor installation of the brake switch
  7. Defected ESP (ESC)
  8. Faulty of Master cylinder pressure
Threshold Value Case 1
  • When brake switch is "ON" for 6 minutes, vehicle speed over 20 km/h (12.5 MPH), brake pedal value less than 6 mm, and brake pedal pressure less than 0.5 bar
Case 2
  • When brake switch is "OFF" for 3 seconds, brake pedal value over 25 mm and brake pedal pressure more than 5 bar
MIL
  • ESP (ESC) warning lamp is activated
Reset Condition
  • After turn ignition switch OFF and back ON, put on (1 second) and OFF (1 second) the brake pedal
NOTE: * IEBM (Integrated Electric Brake Module: ESP Control Module)