SPN 110 - FMI 3 (Fault Code 144)
Monday, June 26, 2017
Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850)
SPN110 FMI3
Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
CODES:
Fault Code: 144
PID(P), SID(S): P110
SPN: 110
FMI: 3/3
Lamp: Amber
SRT:
REASON: Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit.
EFFECT:
-Automotive: Possible white smoke. Fan will stay ON if controlled by ECM. No engine protection for engine coolant temperature.
-Marine: None, no engine protection for circuit or sensor failure.
Circuit Description:
The engine coolant temperature sensor is used by the electronic control module (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 engine emissions control.
Component Location:
The engine coolant temperature sensor is located on the thermostat housing.
Shop Talk:
Before troubleshooting Fault Code 144, check for multiple faults. The engine coolant temperature 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.
Temperature: 0°C/ 32°F, Resistance (ohms): 30k to 37k
Temperature: 25°C/ 77°F, Resistance (ohms): 9.3k to 10.7k
Temperature: 50°C/ 122°F, Resistance (ohms): 3.2k to 3.8k
Temperature: 80°C/ 176°F, Resistance (ohms): 1.0k to 1.3k
Temperature: 95°C/ 203°F, Resistance (ohms): 700 to 800
On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines):
• The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. The MIL lamp and fault code can also be cleared using the INSITE™ service tool.
• The fault code will be cleared from memory after 40 consecutive drive cycles where the diagnostic runs and passes.
On-Board Diagnostics (OBD) Information (Euro 4 Stage 1+ Certified Engines):
• The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• An engine torque derate will be activated after 50 hours of engine operation with the fault code active.
• The ECM turns OFF the malfunction indicator lamp (MIL) after 1 ignition cycle that the diagnostic runs and does not fail. The MIL lamp cannot be cleared using the INSITE™ service tool.
• The fault code will be cleared from memory after 400 days or 9600 hours of engine operation.
Read More:
SPN 100 - FMI 4 (Fault Code 141)
SPN 100 - FMI 18 (Fault Code 143)
Blog.Teknisi
Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
 |
| Engine Coolant Temperature Sensor Circuit |
CODES:
Fault Code: 144
PID(P), SID(S): P110
SPN: 110
FMI: 3/3
Lamp: Amber
SRT:
REASON: Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit.
EFFECT:
-Automotive: Possible white smoke. Fan will stay ON if controlled by ECM. No engine protection for engine coolant temperature.
-Marine: None, no engine protection for circuit or sensor failure.
Circuit Description:
The engine coolant temperature sensor is used by the electronic control module (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 engine emissions control.
Component Location:
The engine coolant temperature sensor is located on the thermostat housing.
Shop Talk:
Before troubleshooting Fault Code 144, check for multiple faults. The engine coolant temperature 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.
Temperature: 0°C/ 32°F, Resistance (ohms): 30k to 37k
Temperature: 25°C/ 77°F, Resistance (ohms): 9.3k to 10.7k
Temperature: 50°C/ 122°F, Resistance (ohms): 3.2k to 3.8k
Temperature: 80°C/ 176°F, Resistance (ohms): 1.0k to 1.3k
Temperature: 95°C/ 203°F, Resistance (ohms): 700 to 800
On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines):
• The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. The MIL lamp and fault code can also be cleared using the INSITE™ service tool.
• The fault code will be cleared from memory after 40 consecutive drive cycles where the diagnostic runs and passes.
On-Board Diagnostics (OBD) Information (Euro 4 Stage 1+ Certified Engines):
• The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• An engine torque derate will be activated after 50 hours of engine operation with the fault code active.
• The ECM turns OFF the malfunction indicator lamp (MIL) after 1 ignition cycle that the diagnostic runs and does not fail. The MIL lamp cannot be cleared using the INSITE™ service tool.
• The fault code will be cleared from memory after 400 days or 9600 hours of engine operation.
Read More:
SPN 100 - FMI 4 (Fault Code 141)
SPN 100 - FMI 18 (Fault Code 143)
Blog.Teknisi
0 Response to "SPN 110 - FMI 3 (Fault Code 144)"
Post a Comment