Pinpoint Test I : DTCS P07EC, P07ED: Notes
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