SCREW-MACHINE 6H3622 - Caterpillar

System Operation Description:Use this procedure if one of the following event codes is active. Refer to Troubleshooting, "Event Codes" for information about event codes.
Table 1
Diagnostic Codes Table
Code and Description Conditions which Generate this Code System Response
E085(1) Engine Shutdown Overridden The engine's Electronic Control Module (ECM) detects ground on the input for the protection override switch. If an engine derate or an engine shutdown is active, the derate or the shutdown will be overridden.
The code is logged.
E097(1) Engine Derate Overridden
E255(1) Diagnostic Reset The engine's ECM detects ground on the input for the protection override switch. If an engine derate or an engine shutdown is active, the derate or the shutdown will be overridden.
The code is logged. System OperationIf full engine power is needed, the protection override switch allows the user to override an engine derate or an engine shutdown.
Illustration 1 g01812515
Typical schematic
Illustration 2 g01812516
P1 ECM connector
(P1-29) Protection override switch
Illustration 3 g01234146
Location of ECM connectors
Test Step 1. Check for an "Active" Event Code
Connect Caterpillar Electronic Technician (ET) to the service tool connector.
Turn the main disconnect switch to the ON position.
Monitor the event codes on Cat ET. Check and record any event codes. Note: Wait at least