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Home >> Pontiac >> 2008 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls And Fuel - 3.8L - DTC P0016 To DTC P0350) >> DTC P0112, P0113, P1111, or P1112 >> Circuit/System Description

Circuit/System Description

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The intake air temperature (IAT) sensor is a variable resistor. The IAT sensor has a signal circuit and a low reference circuit. The IAT sensor measures the temperature of the air entering the engine. The powertrain control module (PCM) supplies 5 volts to the IAT signal circuit, and a ground for the IAT low reference circuit.

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