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Cummins ISC CM2150 (2007-09) Fault Code: 195 (3 wire sensor) 111 111 3 Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit. PID: 111 SPN: 111
Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.
Possible causes:
1)Open return circuit in the engine harness, connectors, or sensor
2)Signal circuit shorted to sensor supply or battery voltage
3)Sensor supply circuit shorted to battery voltage.
Possible repairs:
1)Replace the engine coolant level sensor.
2)Replace the ECM.
3)Repair or replace the OEM harness.