SENSOR-TEMPERATURE/PRESSURE-MAP
OPERATION
The combination, dual function Intake Manifold Air Temperature Sensor/MAP Sensor is installed into the top of the intake manifold with the sensor element extending into the air stream.
The IAT portion of the sensor provides an input voltage to the Engine Control Module (ECM) indicating intake manifold air temperature. The MAP portion of the sensor provides an input voltage to the ECM indicating turbocharger boost pressure.
REMOVAL
The combination, dual function Intake Manifold Air Temperature Sensor/MAP (IAT/MAP) sensor (1) is installed into the top of the intake manifold near the fuel rail.
1. Clean area around sensor.
2. Disconnect electrical connector from IAT/MAP sensor.
3. Remove mounting screw.
4. Remove sensor from intake manifold by twisting.
5. Check condition of sensor O-ring.
INSTALLATION
1. Check condition of sensor O-ring.
2. Clean sensor mounting area at intake manifold.
3. Lubricate sensor O-ring and sensor mounting hole in intake manifold cover with clean engine or diesel oil.
4. Position sensor (1) into intake manifold.
5. Install and tighten sensor mounting screw to 1 N·m (9 in. lbs.) torque.
6. Connect electrical connector to sensor.