Test Notes

Signal Functions
The Manifold Air Temperature (MAT) sensor is a thermistor-type sensor with a variable resistance that changes when exposed to different temperatures. When interfaced with the Powertrain Control Module (PCM), it produces a 0-5 volt analog signal that will measure temperature.

The MAT sensor is used to measure intake air temperature after being cooled through the intercooler, used to determine injector timing.

DTC Descriptions
P1118 = Manifold Air Temperature Sensor Low Output
P1119 = Manifold Air Temperature Sensor High Input