CLAAS 7884h: Short-circuit to the 12V on the ISO CAN bus

A short-circuit to the 12V power supply has been detected on the ISO CAN bus. This condition can cause communication failures or damage to the connected components.

1. 1

   The ISO CAN bus wiring for signs of damage or contact with 12V power

2. 2

   Connections and terminals on the ISO CAN bus for corrosion or poor contact

3. 3

   The power supply circuit for the ISO CAN bus

1. 1

   Inspect

   Inspect the ISO CAN bus wiring for any physical damage, abrasion, or contact with 12V power sources.

2. 2

   Test

   Test the voltage at the ISO CAN bus connections to confirm the presence of 12V where it should not be present.

3. 3

   Isolate

   Isolate sections of the ISO CAN bus to identify the location of the short-circuit.

4. 4

   Repair

   Repair or replace the damaged section of the ISO CAN bus wiring or connections.