Cumminz

Circuit DescriptionThe SCR outlet temperature sensor is used by the electronic control module (ECM) to monitor the engine exhaust temperature exiting the SCR catalyst. The ECM monitors the voltage on the signal pin and converts this to a temperature value. Component LocationThe SCR outlet temperature sensor is located in the exhaust aftertreatment system. It is located in the outlet of the SCR catalyst. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position. Conditions for Setting the Fault CodesThe ECM detects that the SCR outlet temperature sensor signal voltage is below a calibratible value...

Circuit DescriptionThe SCR catalyst outlet temperature sensor is used by the electronic control module (ECM) to monitor the engine exhaust temperature entering the catalyst unit. The ECM monitors the voltage on the signal pin and converts this to a temperature value. Component LocationThe SCR catalyst outlet temperature sensor is located in the aftertreatment system. It is located in the outlet of the SCR catalyst unit. Conditions for Running the DiagnosticsThe engine and keyswitch must be turned off for period of 8 hours before this diagnostic will run. This diagnostic will only run during engine warm up. After an 8 hour...

Circuit DescriptionThe injector solenoid valves are actuated by the electronic control module (ECM) to control fuel metering and timing. Each injector solenoid is connected to the ECM by a supply and a return wire. An electrical pulse is sent to the injector from the ECM on the supply wire and returns to the ECM on the return wire after actuating the solenoid. Each solenoid valve is normally open, and it is only closed by an electrical pulse from the ECM during fuel injection and metering. Component LocationThe ISM has an internal actuator harness that connects to the external engine harness....

Circuit DescriptionThe aftertreatment selective catalytic reduction (SCR) catalyst is monitored by SCR intake and SCR outlet temperature sensors that are located in the aftertreatment system. The intake temperature sensor is located before the catalyst and the outlet temperature sensor is located at the outlet of the catalyst system. Component LocationThe SCR catalyst is located in the exhaust system. The location of the SCR catalyst can vary depending on the original equipment manufacturer (OEM). Refer to the OEM service manual for detailed engine and component identification. Conditions for Running the DiagnosticsThe engine must be turned OFF for period of 8 hours...

Circuit DescriptionThe SCR temperature sensors are used to monitor the temperatures of the exhaust gas entering and exiting the SCR catalyst. Component LocationThe SCR intake and outlet exhaust temperature sensors are located in the aftertreatment system. The intake temperature sensor is located before the SCR catalyst and the outlet temperature sensor is located at the outlet of the SCR catalyst. Conditions for Running the DiagnosticsThe engine must be turned off for period of 8 hours before this diagnostic will run. This diagnostic runs when the keyswitch is turned to the ON position after an 8 hour cold soak. Conditions for...