Massey Ferguson 00.0.4A – Dash (Instrument Panel) module: CAN BUS Message Issue From EEM Engine Module (Dash)

The CAN (Controller Area Network) communication has been disrupted. Specifically, the dashboard is failing to receive expected data messages from the EEM (Engine Electronic Module / Engine ECU) over the CAN BUS network.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4

1. 1

   Verify Active Codes: Access the diagnostic system through the display panel/dashboard to confirm if 00.0.4A is active or stored. Check if other modules are also reporting lost communication with the EEM.

2. 2

   Check EEM Power and Ground: Ensure the Engine Electronic Module is receiving proper voltage and has a solid ground. If the EEM is unpowered, it cannot broadcast CAN messages to the Dash.

3. 3

   Inspect CAN BUS Wiring: Locate the CAN High and CAN Low wires running between the EEM and the Dash. Check for continuity, high resistance, or shorts to ground/power.

4. 4

   Connector Inspection: Inspect the wiring harness connectors at both the Dash and the EEM for moisture, corrosion, bent pins, or backed-out terminals.

1. 1

   Disconnect Power

   Turn off the tractor and disconnect the negative battery terminal to prevent electrical spikes during testing.

2. 2

   Access the Modules

   Remove the necessary interior trim to access the rear of the Dash instrument cluster, and locate the EEM (typically mounted on or near the engine block).

3. 3

   Clean and Reseat Connectors

   Disconnect the main harness from both the Dash and the EEM. Apply a high-quality electrical contact cleaner to the pins. Look for any signs of fretting or green copper corrosion.

4. 4

   Repair Wiring (If Applicable)

   If your multimeter continuity tests revealed an open or shorted CAN wire, trace the harness to find the chafe mark or break (commonly found near pivot points, firewall pass-throughs, or areas exposed to heat/vibration). Splice and seal the damaged CAN wires using OEM-approved heat-shrink connectors.

5. 5

   Reassemble and Power Up

   Reconnect the modules and reconnect the battery.

6. 6

   Clear Codes

   Enter the dashboard diagnostic mode and clear the stored fault codes.

7. 7

   Test Operation

   Start the tractor. If the code does not return and the dash gauges (RPM, temperature, etc.) read correctly, the repair is successful. If the wiring is 100% intact and the code persists, the EEM or Dash module may require a software re-flash or physical replacement by a dealer.