Massey Ferguson 04.00.33 – TRANS: Issue With Message From Speed Lever On Armrest (TRANS)

Communication failure or signal interruption between the armrest-mounted speed control lever (Multipad joystick or T-handle transmission control lever) and the tractor's transmission controller. The system is failing to receive valid speed or directional commands from the armrest lever over the CAN bus network.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• MF 7700 Series
• MF 7714
• MF 7715
• MF 7715S
• MF 7716
• MF 7716S
• MF 7718
• MF 7718S
• MF 7719
• MF 7720
• MF 7720S
• MF 7722
• MF 7722S
• MF 7724
• MF 7724S
• MF 7726
• MF 7726S
• MF 5700 Series
• MF 6700 Series

1. 1

   Inspect the Multipad joystick or T-handle speed lever on the right-hand Command Control Armrest for physical damage, sticking buttons, or liquid ingress.

2. 2

   Check the wiring harness and connectors between the armrest control module and the Transmission ECU for pinched wires inside the armrest pivot point, loose connector pins, or corrosion.

3. 3

   Perform a CAN bus communication check between the armrest and the TRANS module using a diagnostic tool to verify network integrity.

4. 4

   Verify alternative controls by testing if the tractor can still be shifted using the left-hand Power Control Lever (PowerShuttle) on the steering column. If the left-hand lever works but the right-hand armrest lever does not, the fault is isolated to the armrest lever/wiring.

1. 1

   Power down

   Turn off the tractor and disconnect the negative battery terminal to prevent electrical shorts while working on the CAN bus modules.

2. 2

   Access armrest internals

   Remove the retaining screws on the underside or side panels of the Command Control Armrest to lift off the top cover.

3. 3

   Disconnect joystick

   Carefully unplug the multi-pin electrical connector attached to the base of the speed lever/Multipad joystick.

4. 4

   Remove faulty lever

   Unbolt the joystick assembly from the armrest chassis.

5. 5

   Install new part

   Mount the replacement joystick/speed lever into the armrest and secure the mounting hardware.

6. 6

   Reconnect and reassemble

   Plug the electrical connector into the new joystick, ensuring the locking tab clicks into place. Reassemble the armrest covers.

7. 7

   Clear codes and test

   Reconnect the battery, turn the ignition on, and use a diagnostic tool (or the tractor's SIS dashboard display) to clear the 04.00.33 fault code. Test the forward/reverse and speed functions to confirm the repair.