CLAAS 78D1h: External Function Module Not Receiving Engine Running Message

The external function module EXT (A62) is not receiving the CAN 'Engine running' message or is receiving an invalid value. This indicates a communication issue between the engine and the external function module.

1. 1

   The CAN bus connection between the engine and the external function module EXT (A62)

2. 2

   The signal integrity of the 'Engine running' message on the CAN bus

3. 3

   The functionality of the external function module EXT (A62)

1. 1

   Verify

   The physical connections and wiring of the CAN bus between the engine and the external function module EXT (A62).

2. 2

   Test

   The 'Engine running' message on the CAN bus using a diagnostic tool to confirm signal validity.

3. 3

   Inspect

   The external function module EXT (A62) for signs of damage or malfunction.