fc cummins

7/24/2019 FC Cummins http://slidepdf.com/reader/full/fc-cummins 1/2 umm ns nc., ox , oum us, - . . . Printed from QuickServe Online All Rights Reserved. Last Modified: 20-Dec-2012 File: 60-fc144 Page 1 of 2 Fault Code 144 Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source CODES REASON EFFECT Fault Code: 144 PID(P), SID(S): SPN: 110 FMI: 3 Lamp: Amber SRT: Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant temperature circuit. Possible white smoke. Fan will stay ON if controlled by ECM. No engine protection for engine coolant temperature. Engine Coolant Temperature 1 Sensor Circuit - QST30 Power Generation Interface Engine Circuit Description: The engine coolant temperature 1 sensor is used by the 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 for engine emissions control. Component Location: The engine coolant temperature 1 sensor is located on the thermostat housing. Refer to Procedure 100-002 in Section E . Shop Talk: Before troubleshooting Fault Code 144, check for multiple faults. The engine coolant temperature 1 sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active. Possible causes of this fault code include: • Open return circuit in the harness, connectors, or sensor • Open signal circuit or shorted to a voltage source. Refer to Troubleshooting Fault Code t05-144

Upload: asad-iqbal

Post on 20-Feb-2018

220 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

7/24/2019 FC Cummins

http://slidepdf.com/reader/full/fc-cummins 1/2

umm ns nc., ox , o um us, - . . . Printed from QuickServe Online

File: 60-fc144 Page 1 of 2

Fault Code 144

Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to HighSource

CODES REASON EFFECT

Fault Code: 144

PID(P), SID(S):SPN: 110FMI: 3Lamp: Amber SRT:

Engine Coolant Temperature 1

Sensor Circuit - Voltage AboveNormal or Shorted to HighSource. High signal voltagedetected at engine coolanttemperature circuit.

Possible white smoke. Fan will stay ON if

controlled by ECM. No engine protection for engine coolant temperature.

Engine Coolant Temperature 1 Sensor Circuit - QST30 Power Generation Interface Engine

Circuit Description:

The engine coolant temperature 1 sensor is used by the ECM to monitor the engine coolant temperature. The ECMmonitors the voltage on the signal pin and converts this to a temperature value. The engine coolant temperature valueis used by the ECM for the engine protection system and for engine emissions control.

Component Location:

The engine coolant temperature 1 sensor is located on the thermostat housing. Refer to Procedure 100-002 in SectionE .

Shop Talk:

Before troubleshooting Fault Code 144, check for multiple faults.

The engine coolant temperature 1 sensor shares return wires in the engine harness with other sensors. An openreturn can cause multiple fault codes to be active.

Possible causes of this fault code include:

• Open return circuit in the harness, connectors, or sensor • Open signal circuit or shorted to a voltage source.

Refer to Troubleshooting Fault Code t05-144