Subaru LEGACY 2002 Quick Reference Index page 185

F: INTAKE AIR TEMPERATURE SENSOR
The intake air temperature sensor is located in the air cleaner case and detects the temperature
of the intake air introduced through the air intake duct. The ECM uses the resistance signal from
the sensor to correct the fuel injection amount.
(1)
(2)
(1) Terminal
(2) Connector
G: INDUCTION CONTROL SYSTEM
There is a butterfly valve on the partition between the intake manifold's right bank and left bank
chambers. This valve is operated by the induction valve actuator installed on the intake manifold.
During operation of the engine, pressure waves are generated in the intake manifold. The pressure
waves have an effect of improving air intake efficiency. To make the most of this effect, the direction
of the pressure wave is changed by opening and closing the induction valve in accordance with the
engine speed so that increased engine output torque is obtained in all speed ranges.
Mid-speed range
(1)
(1) Induction valve (closed)
(2) Induction valve (open)
AIR LINE
(4)
A
(3)
Intake air temperature (°C)
(3) Thermistor
(4) Housing
Low and high speed ranges
A: From air cleaner
FU-5
Fuel Injection (Fuel System)
A
(2)
B2H1428C
B2H3908B