Symptom Tree t097
| 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 and the Troubleshooting and Repair Manual CM870 Electronic Control System ISM Engines, Bulletin 4021381. |
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Intake manifold pressure sensor is malfunctioning |
Check the intake manifold pressure sensor. Refer to Procedure 019-061 in the Troubleshooting and Repair Manual Electronic Control System ISM and QSM11 Engines, Bulletin 3666266 and the Troubleshooting and Repair Manual CM870 Electronic Control System ISM Engines, Bulletin 4021381. |
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Air intake or exhaust leaks |
Inspect the air intake and exhaust systems for air leaks. Refer to Procedure 010-024. |
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Charge air cooler is restricted or leaking |
Inspect the charge air cooler for air restrictions or leaks. Refer to Procedure 010-027. |
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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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Turbocharger wastegate is damaged or is stuck open |
Check the wastegate for freedom of movement. Inspect the wastegate for damage. Refer to Procedure 010-050. |
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Turbocharger is worn or damaged |
Check the turbocharger for damage. Measure the turbine and compressor wheel clearances. Refer to Procedure 010-033. |
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Turbocharger is malfunctioning |
Perform the variable geometry operational test and the variable geometry actuator test within INSITE™. Refer to the appropriate electronic service tool manual. |
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Air compressor connection is loose or damaged |
Check the connection between the manifold and the air compressor. Repair or replace if necessary. |
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Turbocharger is not correct |
Check the turbocharger part number and compare it to the Control Parts List (CPL), Bulletin 3379133 or 4021327. Replace the turbocharger if necessary. Refer to Procedure 010-033. |
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Exhaust system restriction |
Check the exhaust system for any restrictions. Refer to Procedure 011-009. |
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Engine power output is low |
Refer to Engine Performance Troubleshooting in Section TT. |
