DTC Detection Logic

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION LOGIC

DTC (On board display)	Trouble diagnosis name	DTC detecting condition	Possible causes
C1A13 (13)	STOP LAMP RLY FIX	Stop lamp inactive state continues for 0.3 seconds or more despite the outputting of an ICC sensor ICC brake hold relay drive signal The stop lamp remains ON for 60 seconds or more under the following conditions: Driving at 40 km/h or more No stop lamp drive signal output from ICC sensor No brake operation	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 ABS actuator and electric unit (control unit)

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