Symptom Chart: Side And Rear Vision

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to SERVICE INFORMATION , Diagnostic Methods for information regarding Ford-specific diagnostic practices.

Condition	Possible Sources	Actions
The BLIS® is inoperative/does not operate correctly	Wiring, terminals and connectors BLIS® is not configured on with the scan tool BCM IPC SOD-L SOD-R Vehicle speed signal	GO to Pinpoint Test A .
The BLIS® has poor performance	Wiring, terminals and connectors SOD-L SOD-R Buildup or debris on the rear bumper cover sides	GO to Pinpoint Test A
The BLIS® has no message center warning message and the exterior mirror BLIS®/Cross Traffic Alert (CTA) LED is not illuminated	Wiring, terminals and connectors BLIS® is not configured on with the scan tool IPC SOD-L SOD-R Vehicle speed signal	GO to Pinpoint Test A
The CTA system is inoperative /does not operate correctly	Wiring, terminals and connectors BLIS® is not configured on with the scan tool BCM IPC PAM SOD-L SOD-R Vehicle speed signal	GO to Pinpoint Test B .
The CTA system has poor performance	Wiring, terminals and connectors SOD-L SOD-R Build up or debris on the rear bumper cover sides	GO to Pinpoint Test B .
The CTA system has no message center warning message and the exterior mirror BLIS®/Cross Traffic Alert (CTA) LED is not illuminated	Wiring, terminals and connectors CTA system is not configured on with the scan tool IPC PAM SOD-L SOD-R Vehicle speed signal	GO to Pinpoint Test B .
An exterior mirror BLIS®/Cross Traffic Alert (CTA) LED does not illuminate when the tone sounds for the CTA system	Wiring, terminals and connectors PAM SOD-L SOD-R Vehicle speed signal	G GO to Pinpoint Test B .
An exterior mirror BLIS®/Cross Traffic Alert (CTA) LED is constantly on	Wiring, terminals and connectors SOD-L SOD-R Exterior mirror BLIS®/Cross Traffic Alert (CTA) LED	GO to Pinpoint Test I .
An exterior mirror BLIS®/Cross Traffic Alert (CTA) LED is constantly on and an IPC message is present	Wiring, terminals and connectors BCM PAM SOD-L SOD-R	GO to Pinpoint Test C .
The SOD-L does not respond to the scan tool	Wiring, terminals and connectors SOD-L	REFER to article Module Communications Network, GO to Pinpoint Test V
The SOD-R does not respond to the scan tool or cannot be configured	Wiring, terminals and connectors SOD-R	GO to Pinpoint Test E .
The message center displays a blocked sensor message	Dirt, ice, or snow covered rear SOD-L SOD-R	GO to Pinpoint Test F .
The BLIS® or the CTA system cannot be turned off in the message center	IPC A MyKey® restricted key is in use	GO to Pinpoint Test G .