RAM 2500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1997)
EGR Temperature Sensor: Description and Operation
EGR Engine Coolant Temperature Sensor
CIRCUIT OPERATION
The EGR engine coolant temperature sensor provides an input to the EGR control module on circuit K2.
From circuit K2, the sensor draws voltage from the EGR control module. The sensor is a variable resistor. As coolant temperature changes, the
resistance in the sensor changes, causing a change in current draw.
The EGR control module provides ground for the sensor signal (circuit K2) on circuit K4.
