Massey Ferguson 00.00.49 – Dash (Instrument Panel / Dashboard Control Center): CAN BUS Message Issue From EEM (Dash)

This indicates a communication failure on the tractor's Controller Area Network (CAN) bus. Specifically, the instrument panel is either not receiving messages from the Engine Electronic Module (EEM / Engine ECU), or the messages being received are corrupted or timing out.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• Tier 4 tractors (2012-2023)
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 7614-7626

1. 1

   Check for accompanying codes related to the EEM's power supply or other modules reporting CAN timeouts

2. 2

   Verify battery is fully charged and check for severe voltage drop during cranking

3. 3

   Perform a CAN bus resistance test at the diagnostic port with the battery disconnected (should read approximately 60 ohms)

4. 4

   Visually inspect the wiring harness between the EEM and the cab/Dash for chafing, pinched wires, or connector corrosion

1. 1

   Disconnect Power

   Disconnect the negative battery terminal before servicing the electrical system.

2. 2

   Inspect Connectors

   Disconnect the main harness at the EEM (Engine ECU) and the rear of the Instrument Panel. Inspect the pins for corrosion, moisture ingress, or pushed-back pins. Clean with electrical contact cleaner if necessary.

3. 3

   Test Continuity

   Using a multimeter, test the continuity of the CAN-High and CAN-Low wires end-to-end between the EEM connector and the Dash connector. Repair any breaks in the wiring.

4. 4

   Check Terminating Resistors

   If the CAN bus resistance measured 120 ohms during diagnostics, locate and test the terminating resistors on the network. Replace any resistor that does not measure 120 ohms individually.

5. 5

   Verify EEM Power/Ground

   Reconnect the battery and turn the key to the ON position. Verify that the EEM is receiving proper switched power, constant power, and ground. Repair the power supply circuit if voltage is missing.

6. 6

   Module Replacement/Reprogramming

   If the wiring is perfectly intact, the terminating resistors are good, and the EEM has power but is still not communicating with the Dash, either the EEM or the Instrument Panel has suffered an internal hardware failure. A dealer-level diagnostic tool (like Jaltest or AGCO EDT) will be required to determine which module is unresponsive and to program the replacement part.