PAN-OIL 4951418 - Caterpillar

Which Generate This Code:The Electronic Control Module (ECM) detects one of the following conditions:
Both of the inputs from the relay for the user defined shutdown are in the open state.
Both of the inputs from the relay for the user defined shutdown are in the closed state.System Response:The diagnostic code may be viewed on the Caterpillar Electronic Technician (ET). If both of the inputs from the user defined shutdown change to the same state and the engine is running, the engine will continue to run. If both of the inputs from the user defined shutdown change to the same state and the engine is not running, the engine control will not allow the engine to start.
The engine will not start.Test Step 1. Perform the following diagnostic procedure: User Defined Shutdown Input Circuit - TestResults:
OK - STOP