cumminz
Cummins ISB4.5 CM2150 Fault Code: 3737 PID: SID 115 SPN: 1675 FMI: 11 Engine Starter Mode Overcrank Protection – Condition Exists.
Posted by PerDiezel Solutions on
Circuit DescriptionThe overcrank protection feature (or starter lockout) is designed to prevent damage to the starter motor during hard start conditions. Excessive cranking of the engine can cause the starter motor to overheat, resulting in permanent damage. When excessive engine cranking is detected, the overcrank protection feature locks out the starter until the starter motor has adequately cooled, and is safe to operate again. Component LocationThe overcrank protection feature is controlled by the engine control module (ECM), and can not be modified. Conditions for Running the DiagnosticsThis diagnostic runs when the engine is being started. Conditions for Setting the Fault...
Cummins ISB4.5 CM2150 Fault Code: 3738 PID: SPN: 3489 FMI: 18 Air Supply Actuator – Data Valid But Below Normal Operating Range – Moderately Severe Level.
Posted by PerDiezel Solutions on
Circuit DescriptionThe aftertreatment diesel exhaust fluid dosing unit air solenoid is used to enable and disable the truck air supply to the diesel exhaust fluid dosing unit. The air is used to transport the diesel exhaust fluid to the aftertreatment nozzle. Component LocationThe aftertreatment diesel exhaust fluid dosing unit air solenoid is mounted to the back of the diesel exhaust fluid dosing unit. The mounting location of the diesel exhaust fluid dosing unit is OEM specific. Conditions for Running the DiagnosticsThis diagnostic runs continuously while the Selective Catalytic Reduction (SCR) system is dosing diesel exhaust fluid into the aftertreatment system....
Cummins ISB4.5 CM2150 Fault Code: 3749 PID: SID 254 SPN: 3226 FMI: 20 Aftertreatment Outlet NOx Sensor – Data Not Rational – Drifted High.
Posted by PerDiezel Solutions on
Circuit DescriptionThe 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 with 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 the outlet of the aftertreatreatment system. Component LocationThe Aftertreatment Outlet NOx Sensor location can vary,...
Cummins ISB4.5 CM2150 Fault Code: 386 PID: SID 212 SPN: 3509 FMI: 3 Sensor Supply 1 Circuit – Voltage Above Normal or Shorted to High Source.
Posted by PerDiezel Solutions on
Circuit DescriptionThe sensor supply 1 of the electronic control module (ECM) provides a 5 volt supply for the barometric pressure sensor, fuel rail pressure sensor, intake manifold temperature/pressure combination sensor, and camshaft speed/position sensor. Component LocationSensor supply number 1 is located in the ECM engine harness connector and provides a 5 volt supply to various pressure sensors. 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 detects that the sensor supply 1 signal voltage is greater than 5.25-VDC for more...
Cummins ISB4.5 CM2150 Fault Code: 3866 PID: SPN: 3364 FMI: 1 Aftertreatment Diesel Exhaust Fluid Quality – Data Valid But Below Normal Operating Range – Most Severe Level.
Posted by PerDiezel Solutions on
Circuit DescriptionThe DEF quality sensor is a smart device and communicates with the engine electronic control module (ECM) via the J1939 data link. The DEF quality sensor receives power and ground directly from the battery. The sensor performs its own internal diagnostics and reports malfunctions back to the primary engine ECM via the J1939 data link. The DEF quality sensor is used to measure the concentration of the DEF in the tank. Component LocationThe DEF quality sensor is typically mounted in the DEF tank or in-line with the DEF dosing unit supply line. Reference the OEM service manual for a...
