Pinpoint Test F : Transmission Solenoid Power Control: Notes
WARNING: This page is about a different variant/trim than selected.
Refer to Transmission Controls - 6F50/6F55 for schematic and connector information.
Normal Operation
The transmission solenoid power control relay controls vehicle power to all solenoids. Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected. The transmission solenoid power control relay disables power to the transmission solenoids when certain transmission DTCs are set.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0657 | Actuator Supply Voltage "A" Circuit/Open | Open circuit on the transmission solenoid power circuit. |
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- Transmission internal wiring harness frame
- PCM