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2008 Cummins Inc. Box 3005 Columbus IN 47202-3005 U.S.A.

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Fault Code 144

Coolant Temperature Sensor Circuit

CODES REASON EFFECT

Fault Code: 144PID(P), SID(S): P110

SPN: 110FMI: 3Lamp: YellowSRT: 00-088

High voltage detected at thecoolant temperature signal pin 17

of the sensor harness connector.

Possible white smoke. Fan will stay on ifcontrolled by the electronic control module

(ECM). No engine protection for coolanttemperature.

Coolant Temperature Sensor Circuit

Circuit Description:

The coolant temperature sensor is used by the ECM to monitor the temperature of the engine coolant. The coolanttemperature is used by the ECM for the engine protection system, timing, and fueling control.

Component Location:

M11 - The coolant temperature sensor is located in the front of the thermostat housing support on most applications. Onbus applications, the coolant temperature sensor is usually located at the rear of the thermostat housing support.

N14 - The coolant temperature sensor is located on the top of the thermostat housing.

Shop Talk:The resistance of the sensor varies with the temperature. Compare your reading to this table.

Temperature (C) Temperature [F] Resistance (ohms)

0 32 30k to 36k

25 77 9k to 11k

50 122 3k to 4k

75 167 1350 to 1500

100 212 600 to 675

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2008 Cummins Inc. Box 3005 Columbus IN 47202-3005 U.S.A.

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File: 79-fc144 Page 2 of 3

Refer to Troubleshooting Fault Code t05-144

7/24/2019 79-fc144

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2008 Cummins Inc. Box 3005 Columbus IN 47202-3005 U.S.A.

Printed from QuickServe

Online.

All Rights Reserved. Last Modified: 02-Mar-2011

File: 79-fc144 Page 3 of 3