RAM 2500 Truck 2WD L6-6.7L DSL Turbo (2010)
EGR Temperature Sensor: Description and Operation
EGR Temperature Sensor - Operation
OPERATION
The EGR temperature sensor is a negative temperature coefficient thermistor used to measure the temperature of the EGR gas flow after it exits the EGR
cooler.
The Powertrain Control Module (PCM) supplies 5 volts to the EGR temperature signal circuit. To determine the temperature of the EGR gas flow, the
PCM monitors the change in voltage caused by changes in the resistance of the sensor. The PCM uses the exhaust gas recirculation temperature value for
the engine protection system, and also for engine emissions control.