EGR Temperature Sensor
WARNING: This page is about a different car, the 1988 Subaru RX, 1988 Subaru GL-10, 1988 Subaru GL, and 1988 Subaru DL. However, it is still accessible from the selected car via links, so may be relevant.
The EGR temperature sensor is located in EGR passage on intake manifold. An EGR temperature signal converted into resistance is transmitted to control unit for EGR system diagnosis.