Massey Ferguson 04.02.9A – TRANS2: Issue With Powershift L Solenoid Supply Voltage

This code indicates an electrical fault—such as an open circuit, short circuit, or out-of-range voltage—in the circuit supplying power to the "L" range/powershift solenoid on the transmission. When this solenoid fails or loses its electrical signal, the tractor may refuse to shift between certain ranges or may refuse to move altogether.

• 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
• 6712S
• 6713S
• 6714S
• 6715S
• 6716S
• 6718S
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Test the Solenoid Coil: Locate the bank of four transmission solenoids on the side of the transmission. Disconnect the 'L' solenoid and use a multimeter (e.g., Fluke 115) to test the resistance across the solenoid coil pins. An open circuit or dead short indicates internal failure.

2. 2

   Inspect the Wiring Harness: Trace the wiring from the TRANS2 module to the solenoid bank. Look for chafed wires, rodent damage, or melted insulation causing a short to ground or open circuit.

3. 3

   Check Connectors: Inspect the electrical connector at the solenoid for water ingress, corrosion, or pushed-out pins.

4. 4

   Check Associated Switches: Test the switch continuity linked to these solenoids, as switch failure can also cause shifting issues.

1. 1

   Prepare tractor

   Park the tractor on a level surface, engage the parking brake, and turn off the engine.

2. 2

   Clean area

   Clean the area around the transmission solenoid bank on the side of the gearbox to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect harness

   Disconnect the electrical harness connector from the faulty Powershift L solenoid.

4. 4

   Remove retaining hardware

   Remove the retaining bolt or snap-ring securing the solenoid valve to the transmission block.

5. 5

   Remove old solenoid

   Carefully pull the old solenoid valve out. Have a rag ready to catch any residual hydraulic fluid.

6. 6

   Lubricate O-rings

   Lubricate the O-rings on the new solenoid valve with clean hydraulic oil.

7. 7

   Install new solenoid

   Insert the new solenoid into the transmission block and secure it with the retaining hardware.

8. 8

   Reconnect harness

   Reconnect the electrical harness.

9. 9

   Clear code and test

   Clear the 04.02.9A fault code from the TRANS2 module using a diagnostic tool and test drive the tractor to verify that all Dyna-4/Dyna-6 range shifts operate smoothly.