Massey Ferguson 04.0.12 – Transmission Controller (TRANS or TRANS1): Reverse Clutch Solenoid Amp Draw Issue

The transmission controller continuously measures the current (amp) draw from the reverse clutch solenoid circuit. If the current draw falls below or exceeds the expected 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

   Verify the battery voltage using a multimeter (should be around 12.6V). Low system voltage can cause false solenoid amp draw codes.

2. 2

   Trace the wiring harness from the TRANS controller to the reverse clutch solenoid. Look for chafed wires, open circuits, or shorts to ground.

3. 3

   Disconnect the reverse clutch solenoid and inspect the connector pins for corrosion, moisture, or damage.

4. 4

   Use a multimeter to test the resistance across the reverse clutch solenoid coil. If the coil is internally shorted or open (infinite resistance), the solenoid must be replaced.

5. 5

   Verify that the reverse clutch solenoid is actually receiving voltage from the controller when the reverse shuttle is engaged.

1. 1

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

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

2. 2

   Locate the reverse clutch solenoid on the transmission control valve block (typically located on the side of the transmission housing or under the cab, depending on the specific series).

   Locate the reverse clutch solenoid on the transmission control valve block (typically located on the side of the transmission housing or under the cab, depending on the specific series).

3. 3

   Thoroughly clean the area around the solenoid to prevent dirt or debris from entering the transmission hydraulic system.

   Thoroughly clean the area around the solenoid to prevent dirt or debris from entering the transmission hydraulic system.

4. 4

   Disconnect the electrical wiring harness connector from the solenoid.

   Disconnect the electrical wiring harness connector from the solenoid.

5. 5

   Remove the retaining fastener (bolt or snap ring) securing the solenoid to the valve block.

   Remove the retaining fastener (bolt or snap ring) securing the solenoid to the valve block.

6. 6

   Carefully pull the faulty reverse clutch solenoid out of the transmission block.

   Carefully pull the faulty reverse clutch solenoid out of the transmission block.

7. 7

   Lubricate the O-rings on the new replacement solenoid with clean transmission fluid.

   Lubricate the O-rings on the new replacement solenoid with clean transmission fluid.

8. 8

   Insert the new solenoid into the valve block and secure it with the retaining fastener.

   Insert the new solenoid into the valve block and secure it with the retaining fastener.

9. 9

   Reconnect the electrical harness connector.

   Reconnect the electrical harness connector.

10. 10

    Clear the fault codes using a diagnostic scan tool.

    Clear the fault codes using a diagnostic scan tool.

11. 11

    Perform a transmission clutch calibration (e.g., Dyna-4 or Dyna-6 calibration) to ensure the transmission controller learns the engagement profile of the new solenoid and provides smooth shifting.

    Perform a transmission clutch calibration (e.g., Dyna-4 or Dyna-6 calibration) to ensure the transmission controller learns the engagement profile of the new solenoid and provides smooth shifting.