here is the test plan we use.
1. Check resistance of Shift Solenoid A (SSA) by disconnecting the PCM and measuring between the Orange/Yellow (OG/YE) wire at pin 27 and the Red (RD) wire at PCM pin 71 or 97. Resistance should indicate a reading of 15-30 ohms.
2. Turn the ignition switch to the run position. The OG/YE wire at pin 27 should indicate battery voltage.
Tapping the OG/YE wire to ground through a jumper wire should result in a clicking noise that generate from the solenoid.
For comparison, tap the Violet/Orange (VT/OG) wire at PCM pin 1 to ground to activate Shift Solenoid B (SSB).
3. If both solenoids sound similar and SSA shows proper resistance, replace the PCM.
4. If the solenoid shows an open resistance reading, check the OG/YE wire for an open circuit between the PCM and the transmission solenoid connection.
5. If the resistance of the solenoid shows to be ok but the OG/YE wire does not show battery voltage with the ignition switch on and the PCM unplugged, service the circuit for a short to ground.
6. If the OG/YE wire checks to be ok, replace SSA.
and here is the fault code description
DTC P0753 ( )Component
SSA Solenoid Circuit FailureCondition
Solenoid 1 circuit failed to provide voltage drop across solenoid. Circuit open or shorted or PCMdrive failure during on-board diagnostic.Symptom
Incorrect gear selection depending on condition mode and manual lever position. See Solenoid On/Off chart.Will display Check Transmission message.
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