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 Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or Section TF in the Troubleshooting and Repair Manaul for CELECT™ Systems, Bulletin 3666084. |
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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. |
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Idle shutdown or PTO shutdown features are activated |
Turn OFF the keyswitch for 5 seconds. Turn ON the keyswitch and check fault lamp operation. |
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Air in the fuel system |
Check for air in the fuel system. Refer to Procedure 006-003. |
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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. |
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Fuel shutoff valve is closed |
Check for loose wires. Check for power to the fuel shutoff valve solenoid. |
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Exhaust system restriction |
Check the exhaust system for any restrictions. Refer to Procedure 011-009. |
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Air intake system restriction is above specification |
Check the air intake system for restriction. Clean or replace the air filter and inlet piping as necessary. Refer to Procedure 010-031. |
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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 high-quality fuel. Refer to Fuel for Cummins Engines, Bulletin 3379001. |
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Fuel pump is malfunctioning |
Check the fuel pump output pressure, pulsation damper, and pressure regulator. Replace the fuel pump if necessary. Refer to Procedures 005-016 and 005-031. |
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Engine brake adjustment is not correct |
Adjust the engine brakes. Refer to Procedure 003-004. |
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Injector cup is damaged or is not correct |
Check the injector cups for damage and for correct part numbers. Refer to Procedure 006-026. |
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Static injection timing is not correct |
Check the static injection timing. Refer to Procedure 006-025. |
