Massey Ferguson 04.01.14 – TRANS1: Reverse Clutch Solenoid Low Amps

The transmission controller is detecting that the electrical current (amperage) flowing through the reverse clutch solenoid circuit is lower than the expected operational threshold. This condition typically points to an electrical issue such as high resistance in the wiring, a loose or corroded connector, a broken wire, or a failing/open solenoid coil.

• 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
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Ensure the tractor is parked on level ground, the parking brake is firmly engaged, and the machine cannot move during testing

2. 2

   Inspect the wiring harness running from the TRANS1 module to the transmission valve block for chafed wires, breaks, or signs of heat damage

3. 3

   Disconnect the plug at the reverse clutch solenoid and check for water ingress, dirt, or corroded pins, ensuring the pins fit tightly

4. 4

   Using a multimeter, measure the resistance (Ohms) across the pins of the reverse clutch solenoid to check for an open circuit or out-of-spec resistance indicating internal failure

5. 5

   With the engine off but the key ON, verify if the TRANS1 module is sending voltage to the solenoid connector when the reverse shuttle is commanded

1. 1

   Preparation

   Turn off the tractor, remove the key, and relieve any residual hydraulic pressure if required by the service manual.

2. 2

   Clean the Area

   Thoroughly clean the area around the transmission control valve block to prevent dirt from entering the hydraulic system when the valve is removed.

3. 3

   Disconnect

   Unplug the electrical connector from the reverse clutch solenoid.

4. 4

   Removal

   Remove the retaining nut or bolts holding the solenoid coil/valve assembly in place. Carefully slide the old solenoid off the valve stem (or remove the entire cartridge valve depending on the specific transmission block design).

5. 5

   Installation

   Lubricate the O-rings on the new solenoid valve with clean transmission fluid. Install the new solenoid and torque the retaining nut/bolts to OEM specifications.

6. 6

   Reconnection

   Plug the electrical connector back in, ensuring it clicks and locks securely.

7. 7

   Calibration/Testing

   Clear the 04.01.14 fault code from the TRANS1 module using a diagnostic tool. Start the tractor and test the forward/reverse power shuttle operation to ensure smooth engagement and that the code does not return.