John Deere 003599.03: High 12 Volt Supply Voltage in Main Control Module

The Main Control Module detects a high 12 Volt Supply Voltage, which may indicate an overvoltage condition in the electrical system. This fault is associated with the Main Control Module.

1. 1

   12 Volt Supply Voltage

2. 2

   Main Control Module

1. 1

   Verify the 12 Volt Supply Voltage

   Use a multimeter to measure the 12 Volt Supply Voltage and confirm if it is above the normal range.

2. 2

   Inspect the Main Control Module

   Check the Main Control Module for signs of damage or malfunction that could cause incorrect voltage readings.

3. 3

   Refer to the service manual

   Follow the procedures outlined in the service manual for diagnosing and resolving high voltage conditions in the electrical system.