Massey Ferguson 04.01.13 – TRANS1: Reverse Clutch Solenoid Open Circuit

The transmission controller continuously measures the electrical current draw from the reverse clutch solenoid circuit. If the current draw falls below a specific threshold, the controller determines that the circuit is "open". This means there is a break in the electrical path, which could be caused by a broken wire, a disconnected plug, a loss of power supply, or an internal failure (open coil) within the solenoid itself.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5709
• 5710
• 5711
• 6612
• 6613
• 6614
• 6615
• 6616
• 6711
• 6712
• 6713
• 6714S
• 6715S
• 6716S
• 6718S
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Ensure the tractor is parked on level ground, the engine is off, and the wheels are blocked so the tractor cannot move during testing.

2. 2

   Inspect the wiring harness running from the TRANS1 module to the reverse clutch solenoid on the transmission block for chafed wires, broken lines, or loose/corroded connector pins.

3. 3

   Verify if the reverse clutch solenoid is receiving voltage when commanded by the controller (Power Test).

4. 4

   Disconnect the electrical connector from the solenoid and measure the resistance across the solenoid's pins using a multimeter. A healthy OEM solenoid typically measures around 10 Ohms. If it reads infinite resistance (OL), the coil has failed internally.

1. 1

   Park the tractor safely, place all shift levers in neutral, lower any attached equipment to the ground, and block the front and rear wheels.

2. 2

   Locate the reverse clutch solenoid valve on the transmission hydraulic control block.

3. 3

   Disconnect the electrical harness connector from the solenoid.

4. 4

   If the diagnostic tests revealed a wiring issue, repair the broken wire or replace the damaged connector pin in the harness.

5. 5

   If the solenoid coil tested open, remove the retaining hardware and extract the faulty solenoid valve from the transmission block.

6. 6

   Install the new solenoid valve and secure it in place.

7. 7

   Reconnect the electrical harness to the new solenoid.

8. 8

   Use a diagnostic tool to clear the 04.01.13 fault code from the TRANS1 module.

9. 9

   Perform a transmission clutch calibration procedure to ensure smooth engagement of the reverse clutch.