John Deere 2029.09 – EIC (Engine Interface Control Unit): No CAN Message Received From Source Address 29 / Immobilizer Message Missing

The EIC expects a continuous security handshake from the Immobilizer Control Device to allow the engine to run. If the EIC does not receive this message, it will disable the engine.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 5050E
• 5058E
• 5067E
• 5075E
• 5085E
• 5090E
• 5100E
• 6105M
• 6115M
• 6150R
• 7210R
• 7230R
• 7250R
• 7270R
• 7290R
• 8245R through 8400R
• 9R Series

1. 1

   Verify the correct chipped immobilizer key is being used (standard keys will turn the engine over but fail to start)

2. 2

   Perform the immobilizer reset procedure if a non-chipped or incorrect key was previously inserted (insert valid key, turn to ON, wait 3 seconds before cranking)

3. 3

   Verify the Immobilizer Control Device is receiving proper power and ground

4. 4

   Inspect the CAN bus wiring harness between the Immobilizer Control Device and the EIC for chafed wires, corrosion, or loose pins

5. 5

   Check for multiple 'Missing Message' codes which would indicate the entire CAN bus may be shorted or open

1. 1

   Disconnect Battery

   Always disconnect the negative battery terminal before servicing CAN bus components.

2. 2

   Test CAN Resistance

   At the Immobilizer Control Device connector, measure the resistance across the CAN High and CAN Low pins. A healthy CAN bus should read approximately 60 ohms. If it reads 120 ohms, there is an open circuit between the module and the rest of the bus.

3. 3

   Repair Wiring

   If wiring faults (opens, shorts to ground, or shorts to power) are found, repair the harness and clear the codes.

4. 4

   Replace the Immobilizer Module

   If the wiring, power, and ground are all verified as good, the Immobilizer Control Device (or antenna ring) has failed internally and must be replaced.

5. 5

   Reprogramming

   Replacing the immobilizer module or ordering new keys will require a John Deere dealer to program the new components to the tractor's EIC using Service ADVISOR software.