Exhaust Gas Recirculation Temperature 2 (EGRT2) Sensor
ENGINE CONTROL COMPONENTSExhaust Gas Recirculation Temperature 2 (EGRT2) Sensor
The EGRT2 sensor is a thermistor device that monitors the exhaust gas temperature after the EGR coolers. The electrical resistance of a thermistor decreases as the temperature increases, and resistance increases as the temperature decreases. The varying, non-linear resistance affects the voltage drop across the sensor terminals and provides an electrical signal to the PCM that corresponds to the measured temperature.
At approximately 25°C (77°F) with the key ON engine OFF, the temperature signal of the sensor is approximately 4.5 volts while connected to the PCM.
The temperature signal range of the sensor is 4.65 volts at -40°C (-40°F) and 0.25 volt at 300°C (572°F).
The EGRT2 sensor is used to determine whether the EGR coolers are operating correctly.
Exhaust Gas Recirculation Temperature 2 (EGRT2) Sensor:
