Subaru 2009 IMPREZA Service Manual page 153

FUEL INJECTION (FUEL SYSTEMS)
3) Install the under cover.
4) Lower the vehicle.
5) Connect the connector of front oxygen (A/F)
sensor connector and fasten the harness with clips.
(B)
(C)
(A) Front oxygen (A/F) sensor connector
(B) Rear oxygen sensor connector
(C) Clip
6) Connect the ground cable to battery.
C: INSPECTION
Measure the resistance between front oxygen (A/F)
sensor terminal.
1 2 3
4 5 6
Terminal No.
4 and 6
Front Oxygen (A/F) Sensor
(A)
EX-02350
IN-00203
FU-04217
Standard
2.4 0.24 (20°C (68°F))
FU(H4SO)-42