Massey Ferguson 04.X.14 – TRANS1: Reverse Clutch Solenoid Low Amps

The transmission controller is detecting a lower-than-expected electrical current (amperage) draw on the circuit responsible for actuating the reverse clutch solenoid, which typically points to high electrical resistance, a broken/chafed wire, a loose connection, or a failing solenoid coil.

• 4710
• 7724S
• 5712SL
• 7722S
• 7722
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 4708
• 7726S
• 4707
• 4709
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613

1. 1

   Verify that the tractor's battery passes a load test and the charging system is operating correctly, as low system voltage can trigger false low-amp codes.

2. 2

   Trace the wiring harness from the TRANS1 module to the reverse clutch solenoid, looking for chafed wires, pinched lines, or loose pins.

3. 3

   Disconnect the plug at the reverse clutch solenoid and check for dirt, moisture, or corrosion. Clean with contact cleaner and apply dielectric grease.

4. 4

   Using a multimeter, measure the resistance (Ohms) across the pins of the reverse clutch solenoid and compare it to the forward clutch solenoid. An open circuit or significantly higher resistance indicates internal coil damage.

1. 1

   Locate the Solenoid

   Locate the transmission control valve block, typically on the right-hand side of the gearbox. Accessing the upper solenoid valves may require removing the access door in the cab floor.

2. 2

   Clean the Area

   Thoroughly clean the area around the solenoid to prevent any dirt or debris from entering the transmission housing when the valve is removed.

3. 3

   Disconnect

   Unplug the electrical connector from the reverse clutch solenoid.

4. 4

   Remove the Solenoid

   Remove the retaining bolts or clips holding the solenoid in place. Carefully pull the solenoid valve out of the transmission block. Have a rag ready, as a small amount of transmission fluid may leak.

5. 5

   Install the New Part

   Lubricate the O-rings on the new solenoid with clean transmission fluid. Carefully insert the new solenoid into the valve block, ensuring it seats fully without pinching the O-rings.

6. 6

   Secure and Reconnect

   Reinstall the retaining bolts/clips and plug the electrical connector back in.

7. 7

   Test

   Clear the fault codes using a diagnostic tool. Start the tractor and test the forward/reverse shuttle operation to ensure smooth engagement and that the code does not return.