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Home >> Infiniti >> 2013 >> EX37 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Auto Cruise Control System) >> Intelligent Cruise Control >> Component Diagnosis >> DTC C1A05: Brake SW/Stop Lamp SW >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION TABLE

DTC No. (On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1A05 (5) BRAKE SW/STOP L SW If the ICC sensor integrated unit receives signals indicating that the stop lamp switch [from ABS actuator and electric unit (control unit)] is ON and the ICC brake switch (from ECM) is ON.
  • Stop lamp switch circuit
  • ICC brake switch circuit
  • Stop lamp switch
  • ICC brake switch
  • Incorrect stop lamp switch installation
  • Incorrect ICC brake switch installation
  • ECM
  • ABS actuator and electric unit (control unit)
NOTE: If DTC "C1A05" is detected along with DTC "U1000", "U0401", "U0415" or "U0121", first diagnose the DTC "U1000", "U0401", "U0415" or "U0121".