Pinpoint Test A : Shift Solenoid A (SSA): Notes

WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

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.

Carry out KOEO and KOER procedures.
Retrieve and record all DTCs.
Repair all non-transmission DTCs first.
Repair all transmission DTCs second.
Clear all CMDTCs and attempt to repeat them.
Repair all CMDTCs.
If only pass codes are obtained, REFER to: Diagnosis By Symptom .

Shift Solenoid A (SSA)

Refer to Transmission Controls - 6F50/6F55 for schematic and connector information.

Normal Operation

The PCM applies and releases the various clutches in the transmission by actuating the shift solenoids in the solenoid body. SSA is a Variable Force Solenoid (VFS).

NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded OFF. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies power to the transmission solenoids when the ignition is cycled from off to on. Do not use a solenoid control circuit that may be at fault, refer to DTC Chart: PCM for a fault listing.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
P0750	Shift Solenoid "A"	Open circuit in the solenoid or wire harness.
P0753	Shift Solenoid "A" Electrical	Open circuit in the solenoid or wire harness.
P0754	Shift Solenoid "A" Intermittent	Intermittent circuit in the solenoid or wire harness open, shorted to ground or shorted to power.
P0973	Shift Solenoid "A" Control Circuit Low	Short to ground in the solenoid or wire harness.
P0974	Shift Solenoid "A" Control Circuit High	Open circuit or short to power in the solenoid or wire harness.

Possible Sources

Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
SSA
Transmission internal wiring harness frame
PCM