Massey Ferguson 04.X.13 – Transmission Module (TRANS1 or TRANS): Reverse Clutch Solenoid Open Circuit

The transmission controller has detected a break in the electrical circuit responsible for actuating the reverse clutch. The system cannot detect the solenoid, which is usually caused by a disconnected plug, a broken wire in the harness, or a burned-out internal coil within the solenoid itself.

• 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
• 5600 Series
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7700 Series
• 7714S
• 7719S
• 5400 Series
• 5700 Series
• 6400 Series
• 6600 Series
• 6700 Series
• 7600 Series

1. 1

   Visual Inspection: Check the reverse clutch solenoid connector on the transmission block for disconnected plugs, corrosion, or water ingress.

2. 2

   Harness Check: Inspect the wiring harness routing from the TRANS1 module to the transmission for rub points, pinched wires, or breaks.

3. 3

   Resistance Test: Unplug the reverse clutch solenoid and measure the resistance across the coil pins with a multimeter. A healthy transmission solenoid of this type typically reads around 10 Ohms. If it reads 'OL' (Open Loop / infinite resistance), the solenoid coil has failed internally.

4. 4

   Ground & Power Integrity: Verify that the circuit has a solid ground and that the controller is sending voltage to the plug when the shuttle lever is shifted into reverse.

1. 1

   Disconnect Power

   Turn off the tractor and disconnect the battery to protect the TRANS1 module.

2. 2

   Access the Valve Block

   Locate the reverse clutch solenoid on the side of the transmission control valve block.

3. 3

   Harness Repair (If Applicable)

   If the diagnostic checks revealed a broken wire, splice and seal the wiring harness using weather-resistant connectors.

4. 4

   Replace the Solenoid (If Applicable)

   If the solenoid coil failed the resistance test, unplug the electrical connector. Remove the retaining nut/fastener holding the solenoid coil to the valve stem (or unthread the cartridge valve, depending on the specific transmission block).

5. 5

   Install New Part

   Slide the new solenoid coil into place and secure it. Reconnect the electrical harness.

6. 6

   Clear Codes

   Reconnect the battery, turn the key on, and use the tractor's onboard diagnostic display (or a dealer service tool) to clear the inactive 04.X.13 code.

7. 7

   Test

   Start the tractor and test the forward/reverse power shuttle operation to ensure smooth engagement.