DTC Detection Logic

DTC (On board display)	Trouble diagnosis name	DTC detecting condition	Possible causes
C1A13 (13)	STOP LAMP RLY FIX	If the stop lamp is not activated even though the ICC sensor integrated unit is transmitting a ICC brake hold relay drive signal. If the stop lamp is activated even though the ICC sensor integrated unit is not transmitting a ICC brake hold relay drive signal.	Stop lamp switch circuit ICC brake switch circuit ICC brake hold relay circuit Stop lamp switch ICC brake switch ICC brake hold relay Incorrect stop lamp switch installation Incorrect ICC brake switch installation ECM

NOTE: If DTC "C1A13" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to "ICC SENSOR INTEGRATED UNIT: DTC LOGIC ".