Symptom Tree t081
| 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, Electronic Control System ISM and QSM11 Engines Bulletin 3666266 or the Troubleshooting and Repair Manual CM870 Electronic Control System ISM Engines, Bulletin 4021381 for fault code troubleshooting. |
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Keyswitch circuit is malfunctioning |
Check the vehicle, equipment, or vessel keyswitch circuit. Refer to Procedure 019-064 in the Troubleshooting and Repair Manual Electronic Control System ISM and QSM11 Engines, Bulletin 3666266 or the Troubleshooting and Repair Manual CM870 Electronic Control System ISM Engines, Bulletin 4021381. |
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Fuel shutoff valve solenoid or circuit is malfunctioning (electronic controlled fuel systems) |
Check the fuel shutoff valve solenoid and circuit. Refer to Procedure 019-049 in the Troubleshooting and Repair Manual Electronic Control System ISM and QSM11 Engines, Bulletin 3666266 or the Troubleshooting and Repair Manual CM870 Electronic Control System ISM Engines, Bulletin 4021381. |
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Engine is running on fumes drawn into the air intake |
Check the air intake ducts. Locate and isolate the source of the fumes. Repair as necessary. Refer to the OEM service manual. |
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Turbocharger oil seal is leaking |
Check the turbocharger compressor and turbine seals. Refer to Procedure 010-033. |
