New Holland 3674: Check Electrical System Of Vehicle, Replace Ecu (Due To Engine

The fault code indicates an issue with the electrical system of the vehicle, specifically related to the engine. The source suggests that the ECU may need to be replaced.

1. 1

   Electrical system of the vehicle

2. 2

   ECU (Engine Control Unit)

1. 1

   Inspect the electrical system of the vehicle

   Check for any visible damage, loose connections, or corrosion in the electrical system.

2. 2

   Test the ECU (Engine Control Unit)

   Use diagnostic tools to test the functionality of the ECU and determine if it is operating correctly.

3. 3

   Replace the ECU if necessary

   If the ECU is found to be faulty, replace it with a compatible unit as per the service manual.