The system calculates the output torque. The engine control module (ECM) will set a diagnostic trouble code (DTC) when the output torque is not within programmed limits. The function is to detect emission variations that can lead to that the emission levels are not fulfilled.
Conditions for diagnostic trouble code (DTC):
1) The torque calculated by the diagnostic function is too low compared to the predicted torque
Observable symptoms
1) Low torque
2) High fuel consumption
Probable cause
1) Fuel system
2) Charge air system
3) Exhaust system
4) Engine sensors
5) EGR System
6) Injector tip, Damaged spray holes
7) Injector tip, Cracked
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