Massey Ferguson 4.02.62 – TRANS1 (Autotronic 5): Issue With Range 2 Solenoid Valve

The transmission controller detects an electrical fault in the circuit for the Range 2 solenoid valve (L53 or G27), indicating an open circuit, a short circuit to +12 V, or a short circuit to 0 V.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7724
• 7726

1. 1

   Disconnect the electrical connector at the Range 2 solenoid valve (L53) and measure the resistance across the pins (should be 7.2 Ω ± 7%).

2. 2

   Inspect the wiring harness between the Autotronic 5 transmission controller and the L53 solenoid valve for continuity, short to ground (0 V), or short to power (+12 V).

3. 3

   Verify the operation of the Range 2 position switch (L57 / X489) to ensure there is no inconsistency between the switch and the solenoid valve.

1. 1

   Locate the Valve

   Locate the transmission valve block. Depending on the exact model, the L53 Range 2 solenoid valve is typically located on the right-hand hydraulic cover or directly on the robotic mechanical gearbox housing alongside Range 1 (L52), Range 3 (L54), and Range 4 (L55) solenoids.

2. 2

   Clean the Area

   Thoroughly clean the area around the valve block to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect

   Unplug the electrical connector from the L53 solenoid valve.

4. 4

   Remove

   Remove the retaining screws and the flange securing the solenoid valve to the block.

5. 5

   Replace

   Extract the faulty solenoid valve. Lubricate the O-rings on the new solenoid valve with clean transmission oil and insert it into the valve block.

6. 6

   Reassemble

   Reinstall the flange and tighten the retaining screws to the specified torque. Reconnect the electrical harness.

7. 7

   Clear Codes

   Turn on the ignition and use a diagnostic tool to clear the 4.02.62 fault code from the Autotronic 5 controller. Test drive the tractor to ensure Range 2 engages smoothly without error.