Massey Ferguson 04.X.11 – TRANS1: Reverse Clutch Solenoid Amp Draw Issue

The transmission controller has detected an abnormal electrical current (amperage draw) on the circuit responsible for the reverse clutch solenoid. This is typically caused by a short circuit, a degraded solenoid coil pulling too much/too little current, or a damaged wiring harness.

• 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

   Ensure the tractor is parked securely and cannot move while performing transmission electrical tests.

2. 2

   Trace the wiring harness from the TRANS1 controller to the reverse clutch solenoid. Look for chafed wires, pinched lines, or corrosion at the connectors that could cause a short to ground or an open circuit.

3. 3

   Verify that the reverse clutch solenoid is actually being energized by the controller when the reverse mode is selected.

4. 4

   Test the internal resistance of the reverse clutch solenoid coil with a multimeter. If the coil is shorted internally, it will cause the abnormal amp draw.

5. 5

   Verify the operation of the physical forward/reverse switches, as they can fail or send erratic signals before condemning the solenoid.

1. 1

   Locate the Solenoid

   The directional and range change solenoids on the Dyna-4 and Dyna-6 transmissions are located externally on a bank on the side of the transmission housing.

2. 2

   Remove the Faulty Solenoid

   Disconnect the electrical connector from the reverse clutch solenoid. Unbolt the solenoid valve from the transmission valve block. Be prepared to catch a small amount of hydraulic fluid.

3. 3

   Install the New Part

   Lubricate the O-rings on the new solenoid valve with clean hydraulic fluid. Insert it into the valve block and tighten the retaining bolts to OEM torque specifications.

4. 4

   Reconnect

   Plug the electrical harness back into the new solenoid.

5. 5

   Transmission Calibration

   After replacing transmission solenoids, it is highly recommended to perform a Dyna-4 / Dyna-6 clutch calibration using the tractor's dashboard control center or a diagnostic tool. This relearns the engagement points and fixes harsh or jumpy clutch engagement.