Subaru Impreza 2004 User Manual
Subaru Cars
FUJI HEAVY INDUSTRIES LTD.
G1870GE3
2004 IMPREZA SERVICE MANUAL
QUICK REFERENCE INDEX
ENGINE SECTION 2
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
FUEL INJECTION (FUEL SYSTEMS)
FU(H4DOTC)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICES)
EC(H4DOTC)
INTAKE (INDUCTION)
IN(H4DOTC)
EXHAUST
EX(H4DOTC)
COOLING
CO(H4DOTC)
LUBRICATION
LU(H4DOTC)
SPEED CONTROL SYSTEMS
SP(H4DOTC)
IGNITION
IG(H4DOTC)
STARTING/CHARGING SYSTEMS
SC(H4DOTC)
ENGINE (DIAGNOSTICS)
EN(H4DOTC)(diag)