Subaru Impreza 2002 Service Manual page 20

4. Sensors and Switches
D: EXHAUST GAS TEMPERATURE SENSOR
2. STi MODEL
The STi model is not provided with an exhaust gas temperature sensor.
I: VARIABLE VALVE TIMING CAMSHAFT POSITION SENSORS
NOTE:
The variable valve timing camshaft position sensors are installed only on the STi model's engine.
D
The variable valve timing camshaft position sensors are installed one each on the rear ends of
the right and left bank cylinder heads.
D
The sensor detects the amounts of the advance and retard angles of the intake valves caused
by the effect of the variable valve timing system using the variation in the air gap between the sen-
sor and a boss provided on the rear end of each intake camshaft. The sensor's internal construc-
tion and operation are same as those of the crankshaft position sensor.
SENSORS AND SWITCHES
FU-3
Fuel Injection (Fuel System)