LEMON Manuals: Even more car manuals for everyone
Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 481 (Module Communications Network -- F250-F550 Super Duty) >> Diagnosis And Testing >> Communications Network >> Pinpoint Test A: The Four-Wheel Drive (4WD) Control Module Does Not Respond To The Diagnostic Tool >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The 4WD control module communicates with the diagnostic tool through the international standards organization (ISO) 9141 communications network, circuit 70 (LB/WH). Check circuit 70 (LB/WH) between the 4WD control module C281b, and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in the ISO 9141 circuit, damage to the DLC C251, damage to the 4WD control module C281b, or a problem in an in-line connector.

scientia non olet · About LEMON Manuals