LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2016 >> QX50 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance System - Distance Control Assist (DCA) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> (DTC C1A05: Brake Switch / Stop Lamp Switch Both Signal "On" Status) >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

DTC
(On board display)
Trouble diagnosis name DTC detecting condition Possible causes
C1A05
(5)
BRAKE SE/STOP L SW If ICC sensor integrated unit receives the ICC brake switch signal ON status during the stop lamp switch signal ON status
  • 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
NOTE:

If DTC "C1A05" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to DTC LOGIC .