Massey Ferguson 4.02.10 – TRANS1: Reverse Clutch Solenoid Voltage Issue

The transmission controller continuously monitors the electrical circuit of the reverse clutch solenoid. This code is triggered when the controller detects an abnormal voltage or current draw on this specific circuit, typically indicating an open circuit, a short to ground, a short to +12V, or a loss of power supply to the solenoid coil, preventing the transmission from properly engaging or modulating the reverse clutch.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• 5400 Series
• 6400 Series
• 6600 Series
• 6700 Series
• 7600 Series

1. 1

   Inspect the wiring harness running from the TRANS1 controller to the reverse clutch solenoid on the transmission valve block for chafed wires, breaks, or melted insulation.

2. 2

   Disconnect the electrical plug at the reverse clutch solenoid and check for water ingress, dirt, or corroded/loose pins.

3. 3

   Using a multimeter, measure the resistance across the pins of the reverse clutch solenoid (an infinite reading indicates an open internal coil, while 0 ohms indicates a dead short).

4. 4

   Back-probe the connector and verify that the solenoid is receiving the correct voltage signal from the TRANS1 controller when the shuttle lever is moved to the reverse position.

1. 1

   Disconnect battery

   Disconnect the tractor's battery to prevent electrical shorts during the repair.

2. 2

   Locate valve block

   Locate the forward/reverse power shuttle valve block on the side of the transmission.

3. 3

   Clean area

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

4. 4

   Disconnect wiring

   Disconnect the electrical wiring harness connector from the solenoid.

5. 5

   Remove fasteners

   Remove the retaining bolts or clips securing the solenoid valve to the block.

6. 6

   Extract solenoid

   Carefully extract the faulty solenoid.

7. 7

   Lubricate O-rings

   Lubricate the O-rings on the new solenoid with clean, OEM-specified transmission/hydraulic fluid.

8. 8

   Install new solenoid

   Insert the new solenoid and tighten the retaining fasteners to the factory torque specification.

9. 9

   Reconnect components

   Reconnect the electrical connector and the tractor's battery.

10. 10

    Clear fault code

    Clear the stored 4.02.10 fault code from the TRANS1 module using the tractor's diagnostic menu or a dealer service tool.

11. 11

    Perform calibration

    Perform a transmission clutch calibration procedure so the TRANS1 controller can relearn the fill times and engagement points for the reverse clutch to ensure smooth shifting.