Cumminz

Lamp:None Reason:An offset in the outlet NOx sensor reading has been detected. Effect:None on performance. Circuit Description:The aftertreatment outlet NOx (nitrogen oxides) sensor is a smart device and communicates with the Engine Control Module (ECM) via the J1939 data link. The aftertreatment outlet NOx sensor performs its own internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The NOx sensor is permanently attached to the NOx control module. They are serviced as a single component and can not be replaced individually. The aftertreatment outlet NOx sensor is used to measure the NOx emissions at...

Circuit DescriptionThe engine control module (ECM) informs the driver of a maintenance event by using the Maintenance Monitor feature’s lubrication oil drain limits. Component LocationNot Applicable Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the engine oil and filter required changing based on the programmable setting in the Maintenance Monitor. Action Taken When the Fault Code is ActiveThe ECM flashes the amber CHECK ENGINE lamp, indicating a maintenance condition, immediately after the diagnostic runs and...

Circuit DescriptionThe predictive cruise control system sends commands to the ECM via the vehicle J1939 network. Predictive Cruise Control dynamically adjust the vehicle speed profile while the vehicle is operating in cruise control. The vehicle speed profile is optimized for fuel economy based on the upcoming road grade. Component LocationThe SAE J1939 data link wiring and the SAE J1939 devices vary by OEM options. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) did not receive a...

Circuit DescriptionThe crankshaft position and camshaft position sensors are Hall effect type sensors. The engine control module (ECM) provides a 5 volt supply to the position sensor and a return circuit. As the teeth on the crankshaft speed ring or the dimples in the back of the camshaft gear move past the position sensor, a signal is generated on the position sensor signal circuit. The ECM interprets this signal and converts it to an engine speed. A missing tooth on the crankshaft gear is used by the ECM to determine the position of the engine. Component LocationThe crankshaft position and...

Circuit DescriptionThe aftertreatment particulate matter sensor is a smart device and communicates with the engine control module (ECM) via the J1939 data link. The aftertreatment particulate matter sensor performs internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The particulate matter sensor is permanently attached to the particulate matter control module. They are serviced as a single component and can not be replaced individually. The aftertreatment particulate matter sensor is used to measure the soot emissions at the outlet of the aftertreatment system. Component LocationThe aftertreatment particulate matter sensor location can vary depending on...