Massey Ferguson 04.01.0B – TRANS1: Forward Clutch Solenoid Amp Draw Issue

This code indicates that the transmission control module has detected an abnormal electrical current (amperage) draw on the circuit responsible for the forward clutch solenoid. This typically means the current is either too high (indicating a short circuit or a failing solenoid coil with low internal resistance) or too low (indicating high resistance in the wiring, a loose connection, or a failing coil).

• 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
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Inspect the wiring harness running from the TRANS1 module to the transmission valve block for chafed wires, melted insulation, or pinch points that could cause a short to ground or short to voltage.

2. 2

   Disconnect the harness at the forward clutch solenoid and check the pins for corrosion, pushed-back terminals, or water ingress.

3. 3

   Using a multimeter, measure the internal resistance across the pins of the forward clutch solenoid to verify if it is out of OEM specification (open circuit or dead short).

4. 4

   Test the continuity of the power and ground wires from the solenoid connector back to the TRANS1 module to rule out a broken wire.

1. 1

   Preparation

   Park the tractor on a level surface, lower all implements, engage the parking brake, turn off the engine, and disconnect the negative battery terminal.

2. 2

   Locate the Solenoid

   Locate the transmission control valve block on the side of the transmission housing. Identify the Forward Clutch Solenoid (refer to your specific model's service manual diagram to distinguish it from the reverse or range solenoids).

3. 3

   Clean the Area

   Thoroughly clean the exterior of the valve block around the solenoid with brake cleaner or a degreaser. It is critical that no dirt or debris enters the transmission hydraulic system during removal.

4. 4

   Removal

   Disconnect the electrical connector from the solenoid. Remove the retaining bolts or snap ring securing the solenoid to the valve block. Carefully pull the solenoid straight out.

5. 5

   Installation

   Lubricate the O-rings on the new solenoid with clean transmission hydraulic fluid. Insert the new solenoid into the valve block, ensuring it seats fully.

6. 6

   Secure and Reconnect

   Reinstall the retaining bolts/snap ring and torque to OEM specifications. Reconnect the electrical harness.

7. 7

   Testing and Calibration

   Reconnect the battery and start the tractor. Check the valve block for any hydraulic leaks. Clear the 04.01.0B fault code using a diagnostic tool.

8. 8

   Calibration

   Perform a transmission clutch calibration procedure (often done via the tractor's dash screen or diagnostic software) to ensure the TRANS1 module learns the engagement characteristics of the new solenoid.