V-BELT 1565732 - Caterpillar

Probable Causes
Diagnostic codes
Event codes
Engine rating
Programmable parameters
Starting aids
Active engine derate
Electrical connectors
PTO enable switch
Intermediate speed switch
Throttle signal
Circuit for electronic unit injectors
Low injection actuation pressure
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 engine speed, 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:
Verify that the injector codes are programmed.
"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.Starting Aids
Cold Mode
Use the electronic service tool to verify that the engine has exited cold mode. If the engine is operating in cold mode, an indicator will be displayed on the top of any of the status screens on the electronic service tool. Cold mode operation may slow throttle response.Air Inlet Heater
Ensure that the air inlet heater is operating correctly. For additional information on the air inlet heater, refer to Troubleshooting, "Air Inlet Heater Circuit - Test".Active Engine Derate
If an active derate occurs, the warning lamp will flash. "Engine Derate" will appear in the first engine status box on any Cat ET status screen. Verify that the set points for "Derate" that are in the programmable monitoring system have been programmed to the values that are correct. An SPN-FMI code will appear for an active derate on a J1939 receiving device that will display SPN diagnostic codes.Electrical Connections to the ECM
Check the associated wiring for damage, for abrasion, for corrosion or for incorrect attachment on the following connectors: Electronic Control Module (ECM) connectors, customer connector and throttle position sensor connector. 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 the wire for the PTO enable switch and cycle the power to the ECM. Verify that