LOCK 5M1994 - Caterpillar

Probable Causes
The probable root causes are listed in order below:
Diagnostic codes
Intake valve actuation system
Cold mode
Customer specified parameters (normal operation)
Individual malfunctioning cylinder
Power train data link
Torque limit switchRecommended Actions
Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to the data link connector.
Check for active codes and/or for logged codes. Troubleshoot any codes that are present before continuing with this procedure. Note: Certain diagnostic codes may cause poor performance.Intake Valve Actuation System
Start the engine.
Monitor the status screens on Cat ET.
Check for an "Intake Valve System Starting" flag at the top left of any status screen. Note: The engine will not receive full power until the "Intake Valve System Starting" flag becomes inactive.Note: The C13 engines for Combat & Tactical Vehicles are EPA Exempt. The C13 engines are not equipped with emissions devices such as IVA, NOx Reduction System (NRS or EGR), Coolant Diverter Valve, or related sensors & solenoids.Cold Mode
Start the engine.
Monitor the status screens on Cat ET.
Check for a "Cold Mode" flag at the top of any status screen. Note: The engine will not receive full power until the "Cold Mode" flag becomes inactive.Customer Specified Parameters
Verify that the complaint is not normal operation (programmed parameter).
Access the "Configuration" screen on Cat ET.
Check the following parameters:
"Lower Gears Engine RPM Limit"
"Intermediate Gears Engine RPM Limit"
"Gear Down Protction Engine RPM Limit"
Set each parameter to the parameter's maximum value one at a time and determine whether the problem is corrected. Individual Malfunctioning Cylinder
Ensure that the front valve cover connector and the rear valve cover connector are fully connected and ensure that the valve cover connectors are free of corrosion.
Ensure that the J2/P2 ECM connector is fully connected and ensure that the ECM connector is free of corrosion.
Use the "Cylinder Cutout Test". Access the "Cylinder Cutout Test" by selecting the "Diagnostics Test" under the "Diagnostic" menu. Run the "Cylinder Cutout Test" in order to disable each cylinder. Disabling each cylinder allows the technician to isolate the misfiring cylinders. If the misfiring cylinder can be isolated to a specific cylinder, refer to Troubleshooting, "Injector Solenoid Circuit - Test".Power train Data Link
Ensure that the power train data link is not limiting the power.
Monitor the "Powertrain Data Link" status screen while the vehicle is experiencing problems. If the "Powertrain Data Link" status screen indicates that the "Powertrain Data Link" is limiting the power or the rpm, verify that this is not normal operation. If this is not normal operation, refer to the vehicle OEM for repairs.Torque Limit Switch
Check the setting for the customer parameter for the "Torque Limit". If the "Torque Limit" is programmed below 3400 N m (2500 lb ft), check the status screen for the torque limit switch. Ensure that the status screen indicates that the torque limit switch is OFF. If the status of the torque limit switch is ON and a "Torque Limit" is programmed, the system is operating correctly. If the switch that is connected to this signal input is not switching ON and switching OFF, refer to Troubleshooting, "PTO Switch Circuit - Test".