Massey Ferguson 04.0.0F – TRANS or TRANS1 (Transmission Controller / TCU): Reverse Clutch Solenoid Amp Draw Issue

An electrical fault in the reverse clutch solenoid circuit. The transmission controller continuously measures the current (amp draw) from this circuit. If the current draw falls outside the expected limits (typically lower than the limit), it indicates that the circuit is open, shorted to ground, or has lost its power supply.

• 4707
• 4708
• 4709
• 4710
• T4 (2015-2021)
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Ensure the tractor is parked, the parking brake is applied, and the machine cannot move while performing live electrical tests

2. 2

   Verify if the reverse clutch solenoid is receiving power (you should see 12V when the forward/reverse shuttle lever is engaged in reverse)

3. 3

   Inspect the wiring harness running from the Transmission Controller to the solenoid for rub points, broken wires (open circuit), or exposed wires shorting to the chassis (ground)

4. 4

   Unplug the solenoid and check the coil resistance with a multimeter, comparing the reading to OEM specs to determine if the coil is internally shorted or open

5. 5

   Clean all electrical connections at the solenoid and controller to rule out minor corrosion causing intermittent voltage drops

6. 6

   Check the shuttle position potentiometer (located on the transmission cover on the right-hand side) for correct voltage adjustment

1. 1

   Repair Wiring

   If the diagnostic checks reveal a damaged harness, repair the broken/shorted wires and secure the harness away from vibration or rub points.

2. 2

   Replace Solenoid

   If the wiring is intact but the solenoid coil fails the resistance test, remove the retaining hardware on the transmission valve block and replace the Reverse Clutch Solenoid.

3. 3

   Clean Contacts

   Apply dielectric grease to the electrical connector to prevent future corrosion.

4. 4

   Transmission Calibration

   After replacing the solenoid or repairing the circuit, you must perform a transmission calibration (PowerShuttle / Dyna calibration). Warm the transmission fluid to operating temperature, navigate to the dash screen and configure the PowerShuttle progressivity settings to '0', and run the automated calibration sequence to ensure smooth engagement and shifting.