CLAAS 7890h: Engine Speed Information Issue

The system is reporting an issue with the engine speed information from the external function module. This may affect the proper operation of systems relying on engine speed data.

1. 1

   The external function module

2. 2

   Connections to the external function module

3. 3

   The signal path from the external function module

1. 1

   Inspect

   Inspect the external function module for visible damage or signs of malfunction.

2. 2

   Check

   Check the connections to the external function module for looseness, corrosion, or damage.

3. 3

   Test

   Test the signal path from the external function module using appropriate diagnostic tools.