Symptom Chart

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the Transfer Case Control Module (TCCM)	Wiring, terminals or connectors Scan tool Data Link Connector (DLC) TCCM	CHECK the module communications network. REFER to MODULE COMMUNICATIONS NETWORK .
Rear wheels binding when turning corners with the Electronic Locking Differential (ELD) OFF	Wiring, terminals or connectors ELD field coil TCCM Rear differential	GO to PINPOINT TEST T .