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Cummins ISB4.5 CM2150 Fault Code: 691 PID: 351 SPN: 1172 FMI: 3 Turbocharger 1 Compressor Intake Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source.
Posted by PerDiezel Solutions on
Circuit DescriptionThe compressor intake air temperature sensor is a variable resistor sensor and is used to measure the temperature of the air entering the compressor intake of the turbocharger. The engine control module (ECM) supplies 5 volts to the compressor intake temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the air temperature. Component LocationSome engines use a combination ambient air temperature/pressure sensor located in the OEM intake air plumbing rather than a turbocharger compressor intake temperature sensor. Refer to the engine wiring diagram to determine which sensor...
Cummins ISB4.5 CM2150 Fault Code: 692 PID: 351 SPN: 1172 FMI: 4 Turbocharger 1 Compressor Intake Temperature Circuit – Voltage below normal, or shorted to low source.
Posted by PerDiezel Solutions on
Circuit DescriptionThe turbocharger compressor intake temperature sensor is a variable resistor sensor and is used to measure the temperature of the air entering the compressor intake of the turbocharger. The engine control module (ECM) supplies 5-VDC to the compressor intake temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the air temperature. Component LocationNote: Some engines use a combination ambient air pressure/temperature sensor located in the OEM intake air plumbing rather than a turbocharger compressor intake temperature sensor. Refer to the engine wiring diagram to determine which sensor...
Cummins ISB4.5 CM2150 Fault Code: 693 PID: 351 SPN: 1172 FMI: 2 Turbocharger 1 Compressor Intake Temperature – Data Erratic, Intermittent, or Incorrect.
Posted by PerDiezel Solutions on
Circuit DescriptionThe turbocharger compressor intake temperature sensor is a variable resistor sensor and is used to measure the temperature of the air entering the compressor intake of the turbocharger. The engine control module (ECM) supplies 5 volts to the compressor intake temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the air temperature. Component LocationSome engines use a combination ambient air temperature/pressure sensor located in the OEM intake air plumbing rather than a turbocharger compressor intake temperature sensor. Refer to the engine wiring diagram to determine which sensor...
Cummins ISB4.5 CM2150 Fault Code: 697 PID: 21 SPN: 1136 FMI: 3 ECM Internal Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source.
Posted by PerDiezel Solutions on
Circuit DescriptionThe engine control module (ECM) has an internal temperature sensor that is used to measure the temperature inside the ECM. 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 internal temperature sensor circuit is shorted high. Action Taken When the Fault Code is Active-The ECM illuminates the amber CHECK ENGINE light immediately after the diagnostic runs and fails. Conditions for Clearing the Fault Code-To validate the repair, start the engine and let it idle for 1 minute.-The ECM will turn off the...
Cummins ISB4.5 CM2150 Fault Code: 698 PID: 21 SPN: 1136 FMI: 4 ECM Internal Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source.
Posted by PerDiezel Solutions on
Circuit DescriptionThe engine control module (ECM) has an internal temperature sensor that is used to measure the temperature inside the ECM. 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 internal temperature sensor circuit is shorted to ground. Action Taken When the Fault Code is Active-The ECM illuminates the amber CHECK ENGINE light immediately after the diagnostic runs and fails. Conditions for Clearing the Fault Code-To validate the repair, start the engine and let it idle for 1 minute.-The ECM will turn off...
