John Deere ECU003353.31 – ECU: Alternator Without Function

The alternator is not functioning properly. This may be due to a broken drive belt, which is a common cause of such a fault.

1. 1

   Drive belt for damage or breakage

2. 2

   Alternator output voltage

3. 3

   Alternator connections

1. 1

   Inspect

   Check the drive belt for signs of damage, wear, or breakage.

2. 2

   Replace

   If the drive belt is damaged, replace it with a new one of the correct specification.

3. 3

   Test

   After replacing the drive belt, test the alternator to ensure it is functioning properly.