Case IH 2468 - UCM – UCM: Shuttle lever C2 switch voltage too high

A "voltage too high" fault on a Case IH shuttle lever switch typically indicates that the switch input is shorted to a +12 Volt power source or a 5 Volt reference line. It can also indicate an open circuit that causes the controller to see a maximum voltage value.

• VESTRUM CVX
• Magnum (235-340 series)
• Maxxum
• Puma

1. 1

   Physically cycle the shuttle lever back and forth to free up potentially stuck mechanical switches

2. 2

   Try driving in the opposite direction to see if the module recognizes the input

3. 3

   Inspect wiring for a short to the +12V or 5V reference lines

4. 4

   Check wiring for an open circuit that may cause the controller to see a maximum voltage value