Massey Ferguson 4.03.0F – Transmission 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 specific limit, the controller logs this fault. This condition typically means the circuit is open, shorted to ground, or has lost its power supply.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613

1. 1

   Connect a compatible diagnostic tool to the tractor's diagnostic port to confirm the active 04.03.0F code in the TRANS1 module.

2. 2

   Inspect the wiring harness from the transmission controller to the reverse clutch solenoid for loose connections, broken wires (open circuit), or rubbed insulation causing a short to ground. Clean any corroded connections.

3. 3

   Use a voltmeter to test the leads plugging into the reverse clutch solenoid. Verify if the solenoid is receiving proper voltage when energized (when the shuttle/mode lever is moved to the reverse position).

4. 4

   Test the internal resistance of the reverse clutch solenoid itself to determine if the coil has failed open, which would cause the low amp draw.

1. 1

   Secure the Machine

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

2. 2

   Repair Wiring

   If the diagnostic checks revealed a broken wire or a short to ground in the harness between the TRANS1 controller and the solenoid, repair or replace the affected wiring section.

3. 3

   Replace the Solenoid

   If the wiring is intact but the solenoid fails the resistance/current test, remove the faulty reverse clutch solenoid valve from the transmission valve block and install a new one.

4. 4

   Fluid Check

   Check the transmission fluid level. If fluid was lost during solenoid replacement, top it off with Massey Ferguson Transmission Fluid.

5. 5

   Clear Codes

   Reconnect your diagnostic tool, navigate to the TRANS1 menu, and clear the 04.03.0F DTC.

6. 6

   Transmission Calibration

   After replacing transmission solenoids, it is highly recommended to perform a transmission/clutch calibration (adjusting the PowerShuttle progressivity settings) to ensure smooth gradual engagement of the reverse directional clutch.