Massey Ferguson 04.03.99 – TRANS2: Issue With Powershift P Solenoid Supply Voltage

An electrical fault—specifically a supply voltage irregularity, open circuit, or short—detected in the circuit powering the "P" solenoid responsible for powershift/range changes on the transmission.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613

1. 1

   Test the resistance of the Powershift P solenoid coil using a multimeter to check for an open circuit or out-of-spec resistance

2. 2

   Trace and inspect the wiring harness and connectors from the TRANS2 module to the transmission solenoids for rubbed wires, corrosion, or poor grounds

3. 3

   Test the electronic switches linked to the solenoids, as switch failures can mimic a solenoid voltage issue

1. 1

   Locate the Solenoids

   The range change solenoids on the Dyna-6 and Dyna-4 transmissions are handled electronically via a bank of four solenoids mounted externally on the side of the transmission.

2. 2

   Remove the Faulty Solenoid

   Disconnect the electrical harness connector from the Powershift P solenoid. Unbolt the solenoid from the transmission valve block.

3. 3

   Install the New Solenoid

   Fit the replacement solenoid (or solenoid kit) into the block, torque the retaining bolts to OEM spec, and reconnect the electrical harness.

4. 4

   Calibrate the Transmission

   After replacing transmission solenoids, it is highly recommended to run a transmission calibration (warming the transmission fluid up and using the dash screen to calibrate PowerShuttle progressivity and ratio shifting sensitivity) to ensure smooth engagement.