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Home >> Nissan-Datsun >> 2012 >> Leaf SV >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> EV Control System >> DTC/Circuit Diagnosis >> DTC P1572: ASCD Brake Switch >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P1572 ASCD BRAKE SWITCH (ASCD brake switch) A When the vehicle speed is above 30 km/h (19 MPH), ON signals from the stop lamp switch and the ASCD brake switch are sent to the VCM at the same time.
  • Harness or connectors (The stop lamp switch circuit is shorted.)
  • Harness or connectors (The ASCD brake switch circuit is shorted.)
  • Stop lamp switch
  • ASCD brake switch
  • Incorrect stop lamp switch installation
  • Incorrect ASCD brake switch installation
  • VCM
B ASCD brake switch signal is not sent to VCM for extremely long time while the vehicle is being driven.