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DTC C1249/49 Open in Stop Light Switch Circuit: Description

The skid control ECU inputs the stop light switch signal and detects braking condition.

The skid control ECU has a circuit for open detection. The skid control ECU outputs the DTC if it detects an open in the stop light signal input line when the stop light switch is off or an open in the stop light circuit (skid control ECU side).

DTC DETECTION CONDITION

DTC Code Information Code DTC Detection Condition Trouble Area
C1249/49 520 Stop light switch circuit is open for at least 10 seconds when IG2 terminal voltage is 9.5 V or more.
  • Stop light switch
  • Stop light switch circuit
  • Rear combination light (Stop light)