Subaru 2002 Impreza Service Manual page 84

CONTROL SYSTEM
Fuel lniection (Fuel Svstem)
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(2)
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#3 #2 #4
(3)
(5)
#1 #3 #2 #4
(4)
#4 #1 #3
#2
NF0430
(1) Cylinder number (TDC)
(2) Crank angle pulse
(3) Ignition timing at starting
(4) Ignition timing at normal condition
(5) Burning cylinder
FU-34