Massey Ferguson 00.X.35 – Dash: Issue With The Signal Voltage From Forward/Reverse Lever

The controller is detecting an incorrect, missing, or out-of-range electrical voltage signal from the Power Shuttle (Forward/Reverse) lever. This typically prevents the tractor from shifting into forward or reverse, or causes harsh/delayed engagement, as the system cannot verify the operator's directional command.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Verify the tractor's battery is fully charged (around 12.6V), as low system voltage can cause the Dash to misread sensor signals.

2. 2

   Remove the steering column covers and inspect the wiring harness leading to the Forward/Reverse lever for chafed wires, loose pins, or water ingress/corrosion inside the connector.

3. 3

   Back-probe the connector to verify the voltage output in the Forward, Neutral, and Reverse positions. Erratic or dead voltage in one position indicates failed internal electrical contacts.

4. 4

   If the switch tests fine, inspect the Power Shuttle Control Unit for moisture or corrosion, which can cause inconsistent shifting and signal codes.

1. 1

   Disconnect Power

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

2. 2

   Access the Switch

   Remove the plastic console/steering column covers to expose the base of the shuttle lever.

3. 3

   Remove the Faulty Lever

   Unplug the electrical cable connector from the switch. Remove the mounting screws holding the lever assembly to the steering column.

4. 4

   Install the New Part

   Mount the new Forward/Reverse lever and secure it with the screws. Reconnect the electrical plug.

5. 5

   Reassembly

   Reinstall the steering column covers and reconnect the battery.

6. 6

   Transmission Calibration

   Bring the transmission up to operating temperature. Start the engine at 1500 rpm. Engage the power shuttle and differential lock for 3 seconds. Shift the power shuttle lever to initiate the automatic 2-minute calibration process. Validate by performing forward and reverse maneuvers to ensure smooth shifting.