Symptom Chart - Electronic Locking Differential (ELD) System

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

ELD SYSTEM SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the TCCM	Wiring, terminals or connectors Scan tool DLC TCCM	CHECK the module communications network. REFER to MODULE COMMUNICATIONS NETWORK .
Rear wheels binding when turning corners with the MSS in 2WD or OFF	Wiring, terminals or connectors ELD field coil TCCM Rear differential	GO to PINPOINT TEST AD .