Mountaineer AWD V6-4.0L VIN K Flex Fuel (2003)
Test B2-B5
Normal Operation
The 4WD control module communicates with the diagnostic tool through the UART based protocol (UBP) communications network circuit 693 (OG).
If circuit 693 (OG) becomes open or shorted to ground communications to that module will not be possible. Check circuit 693 (OG) between the 4WD
control module C281b and the DLC C251. Total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an
open in circuit 693 (OG), damage to the DLC C251, damage to the 4WD control module C281b, or a problem in the in-line connectors C2108.
Possible Causes
-
circuit 693 (OG) shorted to ground or open
