ECU 000676.14 – Cold Start Aid Signal Received When Not Expected. John Deere System Advisory.

ECU 000676.14 (ECU 676.14)

Code: 000676.14

Shortcode: 676.14

Description:

Error code ECU 000676.14 is triggered when the ECU detects that the cold start aid relay output voltage is high even though the ECU has not energized the relay. This indicates an unexpected activation of the cold start aid, which could be due to a wiring issue, a stuck relay, or unintended electrical interference.

Reaction:

The ECU may limit or disable the starting aid function to prevent potential damage or incorrect operation due to the unexpected signal.

Recommendations:

  • Inspect Relay and Wiring: Check the cold start aid relay and its associated wiring for signs of damage, corrosion, or loose connections that could cause unintended voltage.
  • Test Relay Functionality: Verify that the relay is functioning correctly and is not stuck in the closed position or shorted internally.
  • Check for Electrical Path Issues: Ensure there are no unintended electrical paths causing the relay to receive voltage when it should not.
  • Replace Faulty Components: If the relay or any wiring is found to be defective, replace the necessary components to restore proper operation.
  • Reset ECU and Verify Operation: After repairs, reset the ECU to clear the error code and test the starting aid system to ensure the relay operates only when intended.

Note:

Proper functioning of the cold start aid relay is crucial for ensuring efficient engine start-up, especially in cold conditions. Regular inspection and timely repairs can help prevent starting issues.


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