Backup Assist (BA) Diagnosis Troubleshooting - AD54.65-P-5001A

Model 463 with CODE (J44) Ultrasonic backup assist

	Backup assist (BA) diagnosis, advanced information		AD54.65-P-2001A
	Troubleshooting
Complaint	Possible cause	Notes	Remedy/Test step
Backup assist is activated when reverse gear is not engaged	Voltage supply, BA control module		AD54.65-P-6001-02A
No display and no sound output during system initialization (reverse gear engaged)	Voltage supply, BA control module, warning display		AD54.65-P-6001-02A
			AD54.65-P-6001-07A
Backup assist is not activated when reversing (trailer hitch socket is not assigned)	Voltage supply, BA control module warning display		AD54.65-P-6001-02A
			AD54.65-P-6001-03A
	Trailer hitch socket		AD54.65-P-6001-07A
			Contact breaker in trailer hitch socket dirty or damaged
Backup assist is activated when trailer hitch socket is assigned			AD54.65-P-6001-08A
Low warning tone when reversing	Interference noise in ultrasonic range		Eliminate interference noise
Low warning tone after engaging reverse gear			AD54.65-P-6001A
Distance warning without obstacle	Sensors incorrectly adjusted or dirty		Position sensors correctly or remove dirt
No distance warning with obstacle	Sensors incorrectly adjusted		Position sensors correctly