STUD-MOUNTING 2800440 - Caterpillar

Probable Causes
Theft deterrent
Diagnostic codes
Air inlet shutoff (if equipped)
Engine oil pressure
Software for the Engine Control Module (ECM)
Engine speed/timing signal
Keyswitch
Communication problems with the ECM
Aftermarket engine protection devices
Power to ECM
Personality module
ECM
Hydraulic Electronic Unit Injectors (HEUI)
Injection actuation pressure control system
Fuel supply
Combustion problemRecommended Actions
Theft Deterrent
If the display screen on Messenger indicates that the theft deterrent is enabled, passwords must be entered before the engine will start.Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to the data link connector. Check for active diagnostic codes. Certain diagnostic codes may prevent the engine from starting.Troubleshoot any diagnostic codes that are present before continuing with this procedure.Air Inlet Shutoff (If Equipped)
If the engine was shut down due to the air inlet shutoff system, the air inlet shutoff must be manually reset.Engine Oil Pressure
Check the engine oil level. Engine oil is used to activate the high pressure hydraulic pump.Ensure that the engine oil meets Caterpillar recommendations. Refer to Operation and Maintenance Manual for further details.Check for air in the high pressure oil system.Crank the engine for 30 seconds. Allow time for the starting motor to cool. Crank the engine up to five times in order to purge the air from the high pressure oil system.Software for the ECM
Verify that the correct flash file has been installed in the ECM. If necessary, install the latest flash file into the ECM. Refer to Troubleshooting, "Flash Programming".Note: A new ECM is not programmed. The engine will not start until the ECM software has been installed. Also, the ECM will not communicate until the software has been installed.Engine Speed/Timing Signal
Check the engine speed/timing signal.Observe the engine rpm on Cat ET while the engine is being cranked. This may require Cat ET to be powered directly by the vehicle batteries or this may require Cat ET to be powered directly by a separate power source. If necessary, use the 167-9225 Harness (SERVICE TOOL ADAPTER).If Cat ET displays 0 rpm and the engine is being cranked, there is a problem in the circuit for the primary engine speed/timing sensor or in the circuit for the secondary engine speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor Circuit - Test".If an engine rpm is present, check the sensor installation. If the sensor is not properly installed, the sensor may read engine speed but the sensor may not be able to sense the tooth pattern. The ability to sense the tooth pattern is necessary to determine the cylinder position. Engine rpm is present when the engine rpm is 50 rpm or more.Keyswitch
Use Cat ET to check the status of the keyswitch.Access the status for "Ignition Key Switch".Slowly cycle the keyswitch on and off while the status of the keyswitch is being monitored on the Cat ET status screen. The status should indicate the correct state of the switch.Note: If the "Idle Shutdown Timer" or the "PTO Shutdown Timer" is used, the status for the keyswitch may indicate that the keyswitch is on even though the keyswitch is turned to the OFF position.Communication problems with the ECM
Check the communications