Massey Ferguson 04.03.9B – TRANS2: Issue With Powershift N Solenoid Supply Voltage

Indicates an electrical fault—such as a short circuit, open circuit, or voltage irregularity—in the power supply circuit dedicated to the 'N' solenoid of the Powershift 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

   Verify the battery and alternator are providing stable voltage, as low or spiking system voltage can trigger false solenoid supply codes.

2. 2

   Inspect the wiring harness leading to the transmission solenoids for rubbed-through wires, corrosion at the terminals, or loose connections. Clean terminals with a wire brush and apply dielectric grease.

3. 3

   Test the solenoid by grounding the negative terminals and checking for voltage when the corresponding switch is activated.

4. 4

   Verify the transmission range switches are sending the correct signals to the TRANS2 module.

1. 1

   Locate the Solenoids

   The range change solenoids on these transmissions (like the Dyna-6) are located externally in a bank of four on the side of the transmission housing.

2. 2

   Disconnect Power

   Turn off the tractor and disconnect the battery to prevent electrical shorts.

3. 3

   Remove the Faulty Solenoid

   Disconnect the electrical connector from the Powershift N solenoid. Remove the retaining bolts/hardware holding the solenoid valve in place and carefully pull it out of the transmission block.

4. 4

   Install the New Solenoid

   Insert the replacement solenoid (ensure any O-rings are lubricated with clean transmission fluid). Secure the retaining hardware.

5. 5

   Reconnect and Clear Codes

   Reconnect the electrical harness, reconnect the battery, and use a diagnostic tool to clear the 04.03.9B DTC from the TRANS2 module. Test drive to ensure the transmission shifts through all ranges smoothly.