RENR5042-02 45 Troubleshooting Section Recommended Actions Table 13 Diagnostic Codes or Event Codes Certain diagnostic codes and/or event codes may cause the engine to shutdown. Connect the Caterpillar Electronic Technician (ET) and check for active codes and/or for logged codes. Troubleshoot any codes that are present before continuing with this procedure. 3. If the voltage is not in the proper range, refer to Troubleshooting, “Switch Circuits - Test”. Selected Engine Rating Parameters Circuit Breakers The engine may be shut down due to low pressure levels or other factors. Connect Cat ET and check for active shutdowns or diagnostic codes. Check the circuit breakers.
The circuit breakers may exceed the trip point due to overheating. Reset the circuit breakers if the circuit breakers are tripped. Fuel Supply If a shutdown is active, “Injection Disabled” will appear in the third box of any status screen on Cat ET. Check for a problem with the fuel supply. Verify that the fuel pressure is correct. Verify that the fuel pressure sensor is installed. Refer to Systems Operation/Testing and Adjusting, “Fuel System” for additional information. An engine shutdown event will appear on a J1939 device if the device is capable of displaying diagnostic codes. Electrical Connections Faulty Overspeed Verify Switch (If Equipped) 1.
Check the following connectors for proper installation: A problem with the circuit for the overspeed verify feature may be causing the engine to shut down. There are no diagnostic codes or event codes that are associated with the overspeed verify feature. Refer to Troubleshooting, “Switch Circuits - Test”. J1/P1 and J2/P2 connectors for the Electronic Control Module (ECM) J61/P61 Customer connectors J300/P300 Connectors for the injector solenoid harness i02290319 Intermittent Low Power or Power Cutout J401/P401 and J402/P402 Engine speed/timing sensor connectors SMCS Code: 1000-035 2. Check the associated wiring for the following conditions:
damage, abrasion, corrosion, and incorrect attachment. Note: Use this procedure only if the engine does not shut down completely. Refer to Troubleshooting, “Electrical Connectors - Inspect”. Probable Causes Note: Aftermarket engine protection devices usually interrupt power to the ECM. Check for correct installation and for operation of aftermarket engine protection devices. It may be necessary to bypass the aftermarket devices in order to continue testing. Diagnostic codes Event codes Throttle signal Faulty Remote Shutdown Electrical connectors 1. Access the status screen that displays the remote shutdown switch status. The remote shutdown switch status on Cat ET is called “User Shutdown”.
Fuel supply 2. Refer to Table 13. Measure the voltage between each terminal that is listed and the engine ground. “User Shutdown” Status Measured Voltage at J1-44 or P61-27 ON OFF >10 VDC