EDGE-CUTTING 1463148 - Caterpillar

Probable Causes
Diagnostic codes
Event codes
Engine rating
Programmable parameters
Cold mode
Altitude derate
Electrical connectors
PTO enable switch
Intermediate speed switch
Throttle signal
Circuit for electronic unit injectors
Fuel supply
Turbocharger outlet pressure sensor (intake manifold air), rated fuel position and/or FRC fuel position
Air inlet and exhaust systemRecommended Actions
Note: If the problem only occurs under certain conditions, test the engine under those conditions. Examples of certain conditions are high rpm, full load and engine operating temperature. Troubleshooting the symptoms under other conditions can give misleading results.Diagnostic Codes and Event Codes
Certain diagnostic codes and/or event codes may cause poor performance. Connect the Caterpillar Electronic Technician (ET) and check for active codes and for logged codes. Troubleshoot any codes that are present before continuing with this procedure.Engine Rating
Verify that the correct engine rating is being used for the application.Programmable Parameters
Check the following parameters on Cat ET:
"Throttle Position Sensor"
"Desired Speed Input Configuration"
"Direct Fuel Control Mode"Determine the type of throttle that is used in the application. Program the parameters to match the type of throttle that is used. Refer to Troubleshooting, "Throttle Position Sensor Circuit - Test" for more information.Note: If the parameters are not programmed correctly, then the engine will have poor performance.Cold Mode
Monitor the status screen on Cat ET in order to verify that the engine has exited cold mode. Observe the reading for coolant temperature on Cat ET. The engine should exit cold mode whenever the coolant temperature is above 18 °C (64°F).Altitude Derate
The engine may be derated due to high elevation. Connect Cat ET to the service tool connector. Check for an active engine derate on the status screens.Note: There are no event codes that are associated with the altitude derate.Electrical Connections to the ECM
Check the associated wiring for damage, abrasion, corrosion or incorrect attachment. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information.PTO Enable Switch
Connect Cat ET and verify that the "PTO enable switch" is not engaged. Remove J1-56 PTO enable switch and cycle power to the ECM. Verify that the problem is still present. If the problem is still present, reattach the wires and continue to next step. If the problem is resolved, refer to Troubleshooting, "Switch Circuits - Test".Intermediate Speed Switch
Connect Cat ET and verify that the intermediate speed switch is not engaged. Remove J1-45 (intermediate speed) and cycle power to the ECM. Verify that the problem is still present. If the problem is still present, reattach the wires and continue to next step. If the problem is resolved, refer to Troubleshooting, "Switch Circuits - Test".Throttle Signal
Connect Cat ET to the service tool connector. View the status for the throttle position on the status screen. Operate the throttle from the low idle position to the high idle position. The status should be 0 percent at low idle and the status should be 100 percent at high idle. If the status cannot operate in the full range, refer to Troubleshooting, "Throttle Position Sensor - Calibrate".Diagnostic codes that are related to the J1939 data link will prevent correct operation of the throttle if the throttle position is transmitted