Pinpoint Test I : DTCS P07EC, P07ED: 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.
Refer to Wiring Diagram Transmission Controls for schematic and connector information.
Normal Operation and Fault Conditions
The GSM contains 3 contacts beneath the center button. If one contact is not recognized by the GSM then DTC P07EC sets.
GSM: DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P07EC | Transmission Range Multi- Function Select Circuit | This DTC sets in continuous memory if two Brake Transmission Shift Interlock (BTSI) override switch inputs do not change state, P07EC may set. A message is displayed on the message center warning that a given range is unavailable. |
| P07ED | Transmission Range Multi- Function Select Circuit Stuck | This DTC sets when the GSM detects either of the Brake Transmission Shift Interlock (BTSI) Override Switch contacts or any of the P, R, N, D, or S shifter button contacts have been closed for 30 seconds or more." |
Possible Sources
- Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
- Brake transmission shift interlock override switch
- BCM fuse 13 (7.5A)
- GSM