Cumminz
Cummins ISB4.5 CM2150 Fault Code: 334 PID: 116 SPN: 110 FMI: 2 Engine Coolant Temperature – Data Erratic Intermittent or Incorrect.
Posted by Diezel Solutions on
Circuit DescriptionThe engine coolant temperature sensor is used by the electronic control module (ECM) to monitor the engine coolant temperature. The ECM monitors the voltage on the signal pin and converts this to a temperature value. The engine coolant temperature value is used by the ECM for the engine protection system and engine emission control. Component LocationThe engine coolant temperature sensor is located on the thermostat housing. 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...
Cummins ISB4.5 CM2150 Fault Code: 338 PID: SID 87 SPN: 1267 FMI: 3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal, or Shorted to High Source.
Posted by Diezel Solutions on
Circuit DescriptionThe electronic control module (ECM) Idle Shutdown feature has an optional parameter for a shutdown accessory relay. When this parameter is set to “Installed”, the ECM sends a signal to energize the relay and turn off vehicle accessories during idle shutdown events. The idle shutdown relay return circuit varies by original equipment manufacturer (OEM). The return circuit can be returned to the ECM through the ECM Return (General) or connected directly to ground. Refer to the OEM service manual to determine grounding configuration. Component LocationThis idle shutdown relay location varies by OEM. Refer to the OEM service manual to...
Cummins ISB4.5 CM2150 Fault Code: 3382 PID: SPN: 3058 FMI: 18 Engine Exhaust Gas Recirculation System – Data Valid But Below Normal Operating Range – Moderately Severe Level.
Posted by Diezel Solutions on
Circuit DescriptionThe engine control module (ECM) uses the EGR differential pressure sensor reading to determine how much exhaust gas is flowing through the EGR connection tube to the intake manifold. The EGR differential pressure sensor measures the pressure drop across the EGR differential pressure orifice using two exhaust ports. The sensor outputs a voltage, which represents the pressure difference between the two ports, and the ECM correlates that voltage to an EGR flow rate. This information is used to control the EGR valve for correct emission levels. The ECM provides a 5 volt supply to the EGR differential pressure sensor...
Cummins ISB4.5 CM2150 Fault Code: 3383 PID: 411 SPN: 3058 FMI: 0 Engine Exhaust Gas Recirculation System – Data Valid But Above Normal Operating Range – Moderately Severe Level.
Posted by Diezel Solutions on
Circuit DescriptionThe engine control module uses the mass air flow sensor reading and calculated charge flow to determine how much exhaust gas is flowing through the EGR connection tube to the intake manifold. The engine control module then compares the calculated EGR flow with the commanded EGR flow in order to control the EGR valve for correct emission levels. Component LocationThe EGR valve is located toward the rear of the engine on the exhaust side. The EGR cross over tube connects the EGR valve to the intake manifold, and crosses over the top of the engine. Conditions for Running the...
Cummins ISB4.5 CM2150 Fault Code: 339 PID: SID 87 SPN: 1267 FMI: 4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal, or Shorted to Low Source.
Posted by Diezel Solutions on
Circuit DescriptionThe electronic control module (ECM) Idle Shutdown feature has an optional parameter for a shutdown accessory relay. When this parameter is set to “Installed”, the ECM sends a signal to energize the relay and turn off vehicle accessories during idle shutdown events. The idle shutdown relay return circuit varies by original equipment manufacturer (OEM). The return circuit can be returned to the ECM through the ECM Return (General) or connected directly to ground. Refer to the OEM service manual to determine the grounding configuration. Component LocationThe idle shutdown relay location varies by OEM. Refer to the OEM service manual...