Cumminz

Circuit DescriptionThe circuit is a pulse width modulated (PWM) driver in the electronic control module (ECM) that controls the electronic fuel control actuator. The actuator is grounded in the ECM. The actuator is normally open. The PWM duty cycle to the electronic fuel control actuator depends on the difference between desired rail pressure and sensed rail pressure. Component LocationThe fuel pump actuator is located on the engine-mounted fuel pump. The engine wiring harness and the ECM are other components in the circuit that can cause this fault code. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is...

Circuit DescriptionThe engine control module (ECM) monitors brake switches and vehicle speed. The ECM will set a fault when it has detected the vehicle speed is above a threshold for a period of time and has stopped twice without brake activity and cycling of the key switch. Component LocationRefer to the equipment manufacturer information location. 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 ECM has detected the vehicle speed has been above 28 MPH for 5 minutes and has decreased...

Circuit DescriptionThe circuit is a pulse width modulation (PWM) driver in the electronic control module (ECM) that controls the fuel pump actuator. The actuator is grounded in the ECM. The actuator is normally open. The PWM duty cycle to the fuel pump actuator depends on the difference between desired rail pressure and sensed rail pressure. Component LocationThe fuel pump actuator is located on the engine-mounted fuel pump housing. The engine wiring harness and the ECM are other components in the circuit that can cause this fault code. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in...

Circuit DescriptionThe aftertreatment outlet NOx (nitrogen oxides) sensor is a smart device and communicates with the engine ECM via the J1939 data link. The aftertreatment outlet NOx sensor receives power and a ground directly from the battery. The aftertreatment outlet NOx sensor performs its own internal diagnostics and reports malfunctions back to the primary engine ECM via the J1939 data link. The aftertreatment outlet NOx sensor is used to measure the outlet NOx emissions from the engine. Component LocationThe aftertreatment outlet NOx sensor location can vary depending on engine application. It is usually located in the exhaust system at the...

Circuit DescriptionThe aftertreatment outlet nitrogen oxides (NOx) sensor is a smart device that receives commands from the engine control module (ECM) via the J1939 data link. The aftertreatment outlet NOx sensor receives power and a ground directly from the battery. The aftertreatment outlet NOx sensor performs its own internal diagnostics and reports malfunctions back to the primary engine ECM, using the J1939 data link. The aftertreatment outlet 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...