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Coolant Temperature Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 145 PID: P110 SPN: 110 FMI: 4/4 LAMP: Yellow SRT: |
Low voltage detected at the coolant temperature circuit. |
Possible white smoke. Fan will stay on if controlled by the electronic control module (ECM). No engine protection for coolant temperature. |
 Coolant Temperature Sensor Circuit
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Circuit Description
The coolant temperature sensor is used by the ECM to monitor the temperature of the engine coolant. The coolant temperature is used by the ECM for the engine protection system, timing, and fueling control.
Component Location
The coolant temperature sensor is located in front of the turbocharger.
Shop Talk
The resistance of the sensor varies with the temperature. Compare your reading to this table:
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Temperature (°C)
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Temperature [°F]
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Resistance (ohms)
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|
0
|
32
|
30k to 36k
|
|
25
|
77
|
9k to 11k
|
|
50
|
122
|
3k to 4k
|
|
75
|
167
|
1350 to 1500
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|
100
|
212
|
600 to 675
|
Refer to Troubleshooting Fault Code t05-145.
Last Modified: 26-Oct-2010
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