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Cummins ISX11.9 CM2250 (2010-12) Fault Code: 195 (2 Wire) PID: 2559 SPN: 111 FMI: 3 Coolant Level Sensor 1 Circuit- Voltage Above Normal or Shorted to High Source
Circuit DescriptionThe engine control module (ECM) supplies a 5 volt supply to the engine coolant level sensor using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The engine coolant level sensor provides a signal to the ECM on the engine coolant level sensor signal circuit. This sensor signal voltage changes, based on the coolant level in the expansion tank.
Component LocationThe engine coolant level sensor is typically located in the radiator top tank or surge tank. Refer to the OEM troubleshooting and repair manual for location.
Conditions for Running the DiagnosticsThis diagnostic runs continously when the keyswitch is in the ON position, or when the engine is operating.
Conditions for Setting the Fault CodesThe ECM detects that the coolant level signal voltage is greater than a calibratible value for more than 1 second.
Action Taken When the Fault Code is ActiveThe ECM illuminates the amber CHECK ENGINE light immediately when the diagnostic runs and fails.No engine protection will be available for low coolant level.Conditions for Clearing the Fault CodeTo validate the repair, start the engine and let it idle for 1 minute.The ECM will turn off the amber CHECK ENGINE light and the fault code will go inactive immediately after the diagnostic runs and passes.This fault code can also be cleared with INSITE? electronic service tool.
Shop TalkPossible causes of this fault code include:
Open return circuit in the engine harness, connectors, or sensor.Signal circuit shorted to sensor supply or battery voltage.Sensor supply circuit shorted to battery voltage.Reference the appropriate original equipment manufacturer (OEM) wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
For intermittent power supply and data link communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing, or intermittent connections.
Possible Cause:1) OEM harness2) ECM failure
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 187 PID: SID 211 SPN: 3510 FMI: 4 Sensor Supply 2 Circuit- Voltage Below Normal or Shorted to Low Source
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 155 PID: 105 SPN: 105 FMI: 0 Intake Manifold 1 Temperature- Data Valid But Below Normal Operating Range- Most Severe Level
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 154 PID: 105 SPN: 105 FMI: 4 Intake Manifold 1 Temperature Sensor Circuit- Voltage Below Normal or Shorted to Low Source
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 153 PID: 105 SPN: 105 FMI: 3 Intake Manifold 1 Temperature Sensor Circuit- Voltage Above Normal or Shorted to High Source
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 151 PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature- Data Valid But Above Normal Operating Range- Most Severe Level
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 146 PID: 110 SPN: 110 FMI: 16 Engine Coolant Temperature- Data Valid But Above Normal Operating Range- Moderately Severe Level