Pinpoint Test P : The Electronic Locking Differential (Eld) IPC Indicator Is Never On - The Eld Switch Led Does Not Light: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
The ELD is a function of the eLSD. The ELD switch is part of the 4X4 switch module, also known by the scan tool as the ATCM. When the ELD is switched on, the ATCM sends a request over the HS-CAN2 requesting the DCMR apply full torque to lock both rear axles. It also sends a message to the IPC to illuminate the ELD indicator.
Possible Sources
- ELD switch (part of MSS)
- eLSD system fault
- HS-CAN system fault