ISB/ISBe Series Engines – FAULT CODE 144

Coolant Temperature Sensor Circuit


Overview

CODE REASON EFFECT
Fault Code: 144
PID: P110
SPN: 110
FMI: 3
LAMP: Yellow
SRT: 

High voltage detected at the coolant temperature signal pin.

Default value used for engine coolant temperature. No engine protection for coolant temperature.

Coolant Temperature Sensor Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The coolant temperature sensor is used by the electronic control module (ECM) to monitor the temperature of the engine coolant. The coolant temperature is used by the ECM for the timing and fueling controls.

Component Location

The coolant temperature sensor is located to the front of the thermostat housing.

Shop Talk

The sensor reading will match the following table if the sensor is functioning properly.

Temperature (°C)
Temperature [°F]
Resistance (ohms)
0
32
5k to 7k
25
77
1700 to 2500
50
122
700 to 1000
75
167
300 to 450
100
212
150 to 220

Refer to Troubleshooting Fault Code t05-144

Last Modified:  26-Oct-2010