Subaru 2008 IMPREZA Reference manual

Bulletin Number: 18-163-12; Date: 10/10/12 Page 1
INTRODUCTION
The purpose of this bulletin is to provide a description of current changes to Service Manuals
available via the Subaru Technical Information System (STIS) web site. The tables contained within
this bulletin are to be used as guides for becoming aware of the latest changes. We advise you to
always refer to the STIS web site when looking for the latest Service information. Printed pages will
not be made available to update printed Service Manuals.
Paper manuals may have different page numbering then what is reected below, based on
multiple new and revised pages. Please refer to the information contained on the STI web site
for all future, update service manual information.
NUMBER: 18-163-12
DATE: 10/10/12
APPLICABILITY: 2008-2012MY Impreza
2008-2011MY Impreza WRX/STI
SUBJECT: Service Manual Corrections
YEAR MODEL SECTION PAGE(S) DESCRIPTION OF CHANGE
2012 Impreza
Engine ME(H4DO)-3,224,246 Valve Spring specifications changed.
Transmission CVT-6,324,325 Oil Pump service cteps changed.
2011 Impreza Engine
EC(H4SO)-17 Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-205-207 Diagnostic steps for DTC P0453 added.
2010
Impreza Engine 1
EC(H4SO)-16 Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-218-220 Diagnostic steps for DTC P0453 added.
WRX Engine 2
EC(H4DOTC)-19 Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)-232-234 Diagnostic steps for DTC P0453 added.
2009
Impreza Engine 1
EC(H4SO)-16 Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-215-217 Diagnostic steps for DTC P0453 added.
WRX Engine 2
EC(H4DOTC)-19 Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)229-231 Diagnostic steps for DTC P0453 added.
2008
Impreza Engine 1
EC(H4SO)-15 Pressure Control Solenoid Valve testing steps changed.
EN(H4SO)(diag)-211-213 Diagnostic steps for DTC P0453 added.
WRX Engine 2
EC(H4DOTC)-18 Pressure Control Solenoid Valve testing steps changed.
EN(H4DOTC)(diag)-228-230 Diagnostic steps for DTC P0453 added.
Continued...
SERVICE BULLETIN
ATTENTION:
GENERAL MANAGER q
PARTS MANAGER q
CLAIMS PERSONNEL q
SERVICE MANAGER q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

Bulletin Number: 18-163-12; Date: 10/10/12 Page 2
YEAR MODEL SECTION PAGE(S) DESCRIPTION OF CHANGE
2011
STI Engine 1 EC(STI)-18 Pressure Control Solenoid Valve testing steps changed.
WRX Engine 2 EC(w/o STI)-20 Pressure Control Solenoid Valve testing steps changed.
STI &
WRX Engine 3 EN(H4DOTC)(diag)-254-256 Diagnostic steps for DTC P0453 added.
2010 STI
Engine 1 EC(STI)-18 Pressure Control Solenoid Valve testing steps changed.
Engine 2 EN(STI)(diag)-239-241 Diagnostic steps for DTC P0453 added.
2009 STI
Engine 1 EC(STI)-18 Pressure Control Solenoid Valve testing steps changed.
Engine 2 EN(STI)(diag)-234-236 Diagnostic steps for DTC P0453 added.
2008 STI Engine 1
EC(STI)-17 Pressure Control Solenoid Valve testing steps changed.
EN(STI)(diag)-232-234 Diagnostic steps for DTC P0453 added.