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Symptom Tree t072
| Cause | Correction |
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Electronic fault codes active or high counts of inactive fault codes |
Refer to Section TF in the CELECT Plus™ Systems Troubleshooting and Repair Manual, Bulletin 3666130, or Section TF in the CELECT™ Systems Troubleshooting and Repair Manual, Bulletin 3666084. |
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Fuel level is low in the tank |
Fill the supply tank. Refer to the OEM vehicle specifications. |
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Engine idle speed is set too low (mechanical fuel systems) |
Adjust the fuel pump idle speed. Refer to Procedure 005-029 in Section 5. |
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Idle Shutdown or PTO Shutdown features are activated. |
Turn the keyswitch OFF for 5 seconds. Turn the keyswitch ON and check fault lamp operation. the OEM service manual.. |
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Air in the fuel system |
Check for air in the fuel system. Refer to Procedure 006-003 in Section 6. |
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Engine-driven units are engaged |
Disengage engine-driven units. |
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Fuel is waxing due to cold weather |
Check the fuel heater, if installed. Weather conditions sometimes require a fuel heater. |
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Fuel inlet restriction |
Check for fuel inlet restriction. Refer to Procedure 006-020 in Section 6. |
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Fuel shutoff valve (FSOV) is closed |
Check the fuel shutoff valve and the electrical circuit. Refer to Procedure 019-050 in Section 19 of the CELECT Plus™ Systems Troubleshooting and Repair Manual, Bulletin 3666130, or Procedure 019-050 in Section 19 of the CELECT™ Systems Troubleshooting and Repair Manual, Bulletin 3666084. |
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Exhaust system restriction |
Check the exhaust system for restrictions. Refer to Procedure 011-009 in Section 11. |
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Air intake system restriction |
Check the air intake system for restriction. Refer to Procedure 010-031 in Section 10. |
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Fuel grade is not correct for the application or the fuel quality is poor |
Operate the engine from a tank of known high quality fuel. Refer to Fuels for Cummins® Engines, Bulletin 3379001. |
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Fuel pump is malfunctioning |
Check the fuel pump output pressure with INSITE™ electronic service tool. Replace the fuel pump, if necessary. Refer to Procedure 005-016 in Section 5. |
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Engine brake adjustment is not correct |
Adjust the engine brakes. Refer to Procedure 020-024 in Section 20. |
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Injector cup spray holes are plugged |
Remove and clean the injectors. Refer to Procedure 006-026 in Section 6. |
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Static injection timing is not correct |
Check the static injection timing. Refer to Procedure 006-025 in Section 6. |
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