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Intake Manifold Temperature Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 154 PID: P105 SPN: 105 FMI: 4 LAMP: Yellow SRT: |
Low voltage detected at the intake manifold temperature signal pin. |
Default value used for engine intake manifold temperature. No engine protection for intake manifold temperature. |
 Intake Manifold Temperature Sensor Circuit
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Circuit Description
The intake manifold pressure/temperature sensor is used by the electronic control module (ECM) to monitor the engine intake air temperature. The intake manifold temperature signal is used by the ECM for cold start aid, timing, and fueling control.
Component Location
The intake manifold pressure/temperature sensor is located in the intake air housing.
Shop Talk
The sensor reading will match the following table if the sensor is functioning properly.
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Temperature (°C)
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Temperature [°F]
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Resistance (ohms)
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0
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32
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5k to 7k
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25
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77
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1700 to 2500
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50
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122
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700 to 1000
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75
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167
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300 to 450
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100
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212
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150 to 220
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Refer to Troubleshooting Fault Code t05-154
Last Modified: 26-Oct-2010
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