Massey Ferguson 4.00.62 – TRANS1 (Autotronic 5 Transmission Controller): Issue With Range 2 Solenoid Valve (TRANS1)

The system has detected an electrical fault on the circuit for the Range 2 solenoid valve (designated in OEM schematics as L53). Specifically, the controller is seeing an open circuit, a short circuit to +12V, or a short circuit to 0V.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5400 Series
• 5425
• 5455
• 5465
• 5600 Series
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5700 Series
• 5700SL Series
• 6400 Series
• 6465
• 6475
• 6480
• 6600 Series
• 6700 Series
• 7600 Series
• 7700 Series
• 7714
• 7715
• 7716
• 7718
• 7719
• 7720

1. 1

   Check for related secondary codes such as X485 or X489, which indicate an inconsistency between the Range 2 switch (L57) and the Range 2 solenoid valve (L53)

2. 2

   Inspect the wiring harness and connectors between the Autotronic 5 controller and the L53 solenoid valve for chafed wires, corrosion, or loose pins that could cause an open or short circuit

3. 3

   Unplug the L53 solenoid and test it with a multimeter. A healthy solenoid reads around 10 ohms. If it reads completely open (infinite resistance) or shorted (0 ohms), the solenoid has failed internally

1. 1

   Locate the Valve Block

   Locate the transmission control valve block, which is situated on the right-hand side of the gearbox.

2. 2

   Identify the Solenoid

   Identify the Range 2 solenoid valve, which is designated as L53 in the valve bank (usually grouped with L52, L54, and L55 for the other ranges).

3. 3

   Disconnect Power

   Ensure the tractor is turned off and disconnect the electrical connector from the L53 solenoid.

4. 4

   Remove the Solenoid

   Remove the retaining screws and the flange holding the solenoid valve in place. Pull the faulty solenoid valve out of the transmission housing.

5. 5

   Install the New Part

   Lightly lubricate the O-rings on the new solenoid valve with clean transmission fluid. Insert the new solenoid into the block.

6. 6

   Reassembly

   Reinstall the flange and tighten the retaining screws. Reconnect the electrical connector.

7. 7

   Clear Codes

   Turn the tractor on, clear the fault codes from the Autotronic 5 controller, and test drive the tractor through all ranges to ensure smooth shifting and verify the repair.