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
C1A13 (13)	STOP LAMP RLY FIX	If the stop lamp is not activated even though the ICC sensor integrated unit is transmitting a stop lamp drive signal (ICC brake hold relay signal). If the stop lamp is activated even though the ICC sensor integrated unit is not transmitting a stop lamp drive signal (ICC brake hold relay signal).	ICC brake hold relay ICC brake switch Stop lamp switch Incorrect ICC brake switch Incorrect stop lamp switch ICC brake hold relay circuit ICC brake switch circuit Stop lamp switch circuit ECM ABS actuator and electric unit (control unit)

NOTE: If DTC "C1A13" is displayed along with DTC "U1000", first diagnose the DTC "U1000". Refer to DIAGNOSIS PROCEDURE .