Massey Ferguson 04.01.0F – Transmission Control Module (TRANS1): Reverse Clutch Solenoid Amp Draw Issue

The transmission controller continuously measures the current draw from the reverse clutch solenoid circuit. If the current draw falls below a specified limit, the controller logs this code. This indicates that the circuit is either open, shorted to ground, or has lost its power supply.

• 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

   Verify Solenoid Energization: Check if the reverse clutch solenoid is receiving power when the shuttle lever is moved to the reverse position.

2. 2

   Wiring Harness Inspection: Trace the wiring from the TRANS1 module to the reverse clutch solenoid. Look for rubbed-through wires (short to ground), broken wires (open circuit), or corroded/loose connector pins.

3. 3

   Voltage & Current Test: Use a multimeter to test the voltage at the solenoid connector. You should see 12V when the reverse pedal/shuttle is engaged.

4. 4

   Coil Resistance Test: Measure the resistance across the solenoid coil pins. If the resistance is out of specification (or shows an open loop/infinite resistance), the solenoid itself has failed internally.

1. 1

   Secure the Tractor

   Position the tractor on flat ground, engage the parking brake, and turn off the engine.

2. 2

   Repair Wiring

   If the diagnostic checks revealed a broken wire or corroded connector between the TRANS1 module and the solenoid, repair the harness and clear the code.

3. 3

   Replace the Solenoid

   If the wiring is intact but the solenoid fails the resistance/amp draw test, locate the reverse clutch solenoid on the transmission valve block. Disconnect the electrical harness, unbolt/unscrew the faulty solenoid, and install the replacement.

4. 4

   Perform Transmission Calibration

   After replacing transmission solenoids, a clutch calibration (e.g., Dyna-4 / Dyna-6 calibration) is highly recommended to prevent jerky shifting. Note: To successfully run the calibration via the Dash Control Center, the transmission oil temperature must be warmed up to between 35°C (95°F) and 45°C (113°F).