Symptom Tree
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Keyswitch circuit is malfunctioning |
Check the vehicle, equipment, or vessel keyswitch circuit. Refer to a Cummins Authorized Repair Location. |
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Tachometer is not calibrated or is malfunctioning |
Compare the tachometer reading with a handheld tachometer or an electronic service tool reading. Calibrate or replace the tachometer as necessary. Refer to the OEM service manual. |
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Electronic fault codes are active |
For instructions on how to read active fault codes, refer to Procedure 101-007 (Electronic Controlled Fuel System) in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. |
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Drivetrain is not correctly matched to the engine |
Check for correct gearing and drivetrain components. Refer to the OEM service manual. |
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Engine power output is low |
Refer to the Engine Power Output Low symptom tree. |
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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 Procedure 018-002 (Fuel Recommendations and Specifications) in Section V. |
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Fuel inlet restriction |
Check for fuel inlet restriction. Contact a Cummins Authorized Repair Facility. |
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Overhead adjustments are not correct |
Measure and adjust the overhead settings. Refer to Procedure 003-004 (Overhead Set) in Section 5. |
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Programmable parameters or selected features are not correct |
Check the programmable parameters and the selected features with an electronic service tool. Set the parameters and features again if necessary. Refer to a Cummins Authorized Repair Location. |
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| Contact a Cummins Authorized Repair Facility |
