John Deere 628.13 – EIC / EPC / MDU: Control Unit Internal Fault

The module has registered an internal electronic malfunction or noted an internal issue when booting up. This means the hardware or the internal software configuration of the module itself is failing to initialize properly.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 5085E
• 5090E
• 5090EL
• 5100E
• 5085M
• 5095M
• 5095MH
• 5105M
• 5015ML
• 5100M
• 5115M
• 5080R
• 5090R
• 5100R
• 5080RN
• 5090RN
• 5100RN
• 6230
• 6330
• 6430
• 250D
• 300D
• 350D
• 400D

1. 1

   Power Cycle: Restart the tractor to see if the boot-up issue is a temporary glitch. Check if the code transitions from active to stored, or if other codes are present.

2. 2

   Visual Inspection: Inspect the EIC/EPC control unit and its wiring harness for any signs of physical damage, moisture intrusion, or burnt components.

3. 3

   Software Verification: Connect John Deere Service ADVISOR to ensure the control unit is running the latest software version. An outdated or corrupted software file can cause boot-up failures.

4. 4

   Interference Check: Inspect the surrounding environment and wiring for potential sources of electromagnetic interference that could affect the control unit's operation.

1. 1

   Disconnect battery

   Disconnect the machine's battery to prevent electrical arcing.

2. 2

   Access module

   Gain access to the affected module (e.g., remove the dashboard trim to access the EIC Instrument Cluster, or locate the EPC module depending on the machine).

3. 3

   Disconnect wiring

   Disconnect the wiring harness connectors from the faulty module.

4. 4

   Remove control unit

   Unbolt and remove the failed control unit.

5. 5

   Install replacement module

   Install the replacement module and securely reconnect the wiring harnesses.

6. 6

   Reconnect battery

   Reconnect the battery.

7. 7

   Program and calibrate module

   Connect John Deere Service ADVISOR. A new EIC or EPC module will require programming, configuration to the specific tractor's options, and calibration (such as transmission calibrations for the EPC) before the machine will operate correctly.

8. 8

   Clear codes and test

   Clear all stored fault codes and test the machine's operation.