RAM 2500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1997)
EGR Temperature Sensor: Description and Operation
EGR Intake Air Temperature Sensor
CIRCUIT OPERATION
The EGR intake air temperature sensor provides an input to the EGR Control Module (PCM) on circuit K321. Circuit K321 connects to cavity 4
of the EGR control module.
From circuit K321, the intake air temperature sensor draws voltage from the EGR control module. The sensor is a variable resistor. As intake air
temperature changes, the resistance in the sensor changes, causing a change in current draw.
The PCM provides a ground for the intake air temperature sensor signal through circuit K2O4. Circuit K2O4 connects to cavity 5 of the EGR
control module.
