CERTIFIED
TECHNICIAN
Technician
Reference
Booklet
2008 New Model Update
Module 917
October 2007
MSA5P0803C
Technical Training
© Copyright 2007
Subaru of America, Inc.
All rights reserved. This book may not be reproduced
in whole or in part without the express permission of
Subaru of America, Inc.
Subaru of America, Inc. reserves the right at any
time to make changes or modifications to systems,
procedures, descriptions, and illustrations contained in
this book without necessarily updating this document.
Information contained herein is considered current as
of October 2007.
© Subaru of America, Inc. 2007
2008 New Model Update
(Module 917)
TABLE OF CONTENTS
2008 IMPREZA INTRODUCTION ..................................................................... 6
OPTION CODES AND EQUIPMENT ....................................................... 8
2.5I STANDARD EQUIPMENT IMPREZA 2.5I 4 DOOR (FW)................. 8
STANDARD EQUIPMENT.............................................................. 8
2.5-Liter SOHC Engine ................................................................... 8
2.5I PREMIUM PACKAGE MODEL UPGRADE IMPREZA 2.5I............... 9
PREMIUM PACKAGE (IZ) .............................................................. 9
MODEL UPGRADE FROM IMPREZA 2.5i (FW) ............................ 9
2.5I SATELLITE RADIO & NAVIGATION PACKAGE MODEL UPGRADE
IMPREZA 2.5I .......................................................................................... 9
SAT/NAV PACKAGE (VZ) .............................................................. 9
MODEL UPGRADE FROM IMPREZA 2.5i PREMIUM PACKAGE
(IZ) .................................................................................................. 9
OUTBACK SPORT MODEL UPGRADE ................................................ 10
IMPREZA OUTBACK SPORT (FW) ............................................. 10
MODEL UPGRADE FROM 2.5i 5 DOOR (FZ) ............................ 10
WRX MODEL UPGRADE....................................................................... 10
IMPREZA WRX (FF)..................................................................... 10
MODEL UPGRADE FROM 2.5i (FW) ........................................... 10
WRX PREMIUM PACKAGE MODEL UPGRADE .................................. 11
IMPREZA WRX PREMIUM PACKAGE (KJ)................................. 11
MODEL UPGRADE FROM IMPREZA WRX (FF)......................... 11
WRX SATELLITE RADIO & NAVIGATION PACKAGE MODEL UPGRADE ................................................................................................... 11
IMPREZA WRX SAT/NAV PACKAGE (UJ) .................................. 11
MODEL UPGRADE FROM WRX PREMIUM PACKAGE (KJ) ..... 11
INTERIOR ....................................................................................................... 12
NAVIGATION.......................................................................................... 15
NAVIGATION DIAGNOSIS..................................................................... 17
NAVIGATION/AUDIO SYSTEM ............................................................. 18
WINDOW ................................................................................................ 20
ELECTRICAL .................................................................................................. 26
FUSE BOXES AND RELAY HOLDERS ................................................. 26
4
August 2007
2008 New Model Update
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BODY INTEGRATED UNIT (BIU) ................................................................... 33
BODY INTEGRATED UNIT .................................................................... 33
BODY INTEGRATED UNIT CUSTOMIZING(NEW ITEMS) ................... 33
LIGHTING SWITCH................................................................................ 34
HEADLIGHT OPERATION ..................................................................... 34
MULTI JOINT CONNECTOR .......................................................................... 35
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)............................................ 41
EVAPORATIVE SYSTEM ............................................................................... 44
HOSE CONNECTIONS .......................................................................... 46
FUEL TANK..................................................................................................... 52
AUTOMATIC TRANSMISSION ....................................................................... 53
CHANGES/ENHANCEMENTS............................................................... 53
Condition....................................................................................... 53
Conditions needed ........................................................................ 53
Procedure ..................................................................................... 54
INITIAL-LEARNING PROCEDURE (4AT WITHOUT PUSH START) .... 55
Procedure ..................................................................................... 55
MANUAL TRANSMISSION CHANGES/ENHANCEMENTS ........................... 57
6 SPEED MANUAL TRANSMISSION (2008).................................................. 59
5AT MAJOR MODIFICATION POINTS........................................................... 63
APPLICATION CHART........................................................................... 65
DRIVE PINION SHAFT AND ATF LEVEL GAUGE ................................ 69
OTHERS................................................................................................. 69
2.5 LITER AIR CONDITIONING BELT............................................................ 70
CHASSIS......................................................................................................... 73
INCLINE START ASSIST ....................................................................... 73
SUSPENSION ........................................................................................ 74
TIRE PRESSURE MONITORING SYSTEM........................................... 75
TOW HOOKS AND TAIL LIGHT............................................................. 76
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2008 IMPREZA INTRODUCTION
The 2008 model year for Impreza launches a new body style and introduces many of the refined
systems that are equipped on Legacy and Tribeca to the Impreza model line up.
6
5
2008 2.5i Impreza 5 Door Front View
2008 2.5i Impreza 5 Door Side View
7
8
2008 2.5i Impreza Side View
2008 Impreza 2.5i 4 Door Side View
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10
9
2008 WRX Front View
2008 WRX Side View
1. Impreza
A: DIMENSION
Model
Sedan
Overall length
Overall width
mm (in)
mm (in)
Overall height (at C.W.)
Length
mm (in)
mm (in)
Compartment
Width
Height
mm (in)
mm (in)
Front
mm (in)
mm (in)
Wheelbase
Tread
Rear
mm (in)
Minimum road clearance
mm (in)
Wagon
OUTBACK
4,415 (173.8)
1,740 (68.5)
1,475 (58.1)
1,890 (74.4)
1,985 (78.1)
1,475 (58.1)
1,200 (47.2)
2,620 (103.1)
1,495 (58.9)
1,490 (58.7)
Non-turbo model: 1,495 (58.9)
Turbo model: 1,500 (59.1)
155 (6.1)
1,495 (58.9)
B: ENGINE
Model
2.5 L Turbo
Engine type
Valve arrangement
Bore × stroke
Displacement
mm (in)
cm3 (cu in)
99.5 × 79 (3.92 × 3.11)
2,457 (149.94)
Compression ratio
Ignition order
Idle speed at Park or
Neutral position
Maximum output
Maximum torque
2.5 L
Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine
DOHC
SOHC
8.4
10.0
1—3—2—4
rpm
kW (HP)/rpm
N·m (kgf-m, ft-lb)/rpm
700
MT: 650
AT: 700
167 (224)/5,200
307 (31.3, 226)/2,800
127 (170)/6,000
230 (23.5, 170)/4,400
11
Dimension Chart
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Option Codes and Equipment
There are 7 Manual Transmission Model option codes and 5 Automatic Transmission option
codes.
2.5i STANDARD EQUIPMENT IMPREZA 2.5i 4 DOOR (FW)
STANDARD EQUIPMENT
2.5-Liter SOHC Engine
Electronic Throttle Control (ETC)
5-Speed Manual Transmission (Standard)
*Four Speed Electronic Direct Control
Automatic with Sportshift (Optional)
5-MPH Impact-Absorbing Bumpers
*16X6.5JJ Steel Wheels with Covers
205/55 R16 All-Season Tires
Carpeted Floor Mats
ABS System: 4 Channel / 4 Sensor
Front Ventilated Disc Brakes
*Rear Drum Brakes
Electronic Brake Force Distribution (EBD)
Active Front Seat Head Restraints
*Side Curtain Airbags
Subaru advanced frontal airbag system (SRS)
Manual Air Conditioning
AM/FM 80 Watt Stereo with Single CD Player
4 Audio Speakers
*MP3/WMA Capability
*Pre-wired for XM/SIRIUS Satellite Radio
Cargo Area Cover (5 DOOR)
Cruise Control
“Cup Holder, Dual, Center Console “
Daytime Running Lights (DRL)
“Door Handles, Black Exterior “
Dual-Mode Digital Trip Odometer
“Exterior Mirrors, Foldable Black”
Fog Light Insert Covers
LATCH System
*Bottle Holder: Front and Rear Door Storage Pocket
Leather-wrapped Shifter Handle
*16.9 Gallon Fuel tank
Clock
Off-Delay Dome Light
Seatback pocket on front passenger seat
Illuminated Ignition Switch Ring
*Average Fuel consumption indicator
Power-Assisted Steering
Power Door Locks
Power Mirrors
Power Windows with Driver’s Auto-Down
Pre-Wired for Security System
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“*Rear Seatback, 60/40 Split Fold-Down”
Rear Seat Headrests for All Seating Positions
Remote Keyless Entry System with Answer Back Chirp
*Double Wishbone Rear Suspension
Tilt Steering Column
Rear Spoiler (5 DOOR)
Visor Vanity Mirrors: Dual with Sliding Cover
“Windshield Wipers, Variable Intermittent ” with Washers
Tricot Upholstery
“Sport-Design Front Seats
Ambient Temperature Gauge
*Engine Immobilizer
2.5i PREMIUM PACKAGE MODEL UPGRADE IMPREZA 2.5i
PREMIUM PACKAGE (IZ)
MODEL UPGRADE FROM IMPREZA 2.5i (FW)
AM/FM 80 Watt Stereo with 6-disc in-dash CD-changer
*10 Audio Speakers
Auxiliary Audio Jack
*MP3/WMA Capability
*16 Inch X 6.5 JJ 12-Spoke Aluminum Alloy Wheels
Rear Disc Brakes
*Leather-Wrapped Steering Wheel w/ Audio & Cruise Control Switches
Leather-wrapped Shift Knob
Front Fog Lights
Body-color Exterior Mirrors and Door Handles
*Vehicle Dynamics Control (VDC)
*Incline Start Assist (MT models Only)
*Brake Assist
2.5i SATELLITE RADIO & NAVIGATION PACKAGE MODEL UPGRADE IMPREZA 2.5i
SAT/NAV PACKAGE (VZ)
MODEL UPGRADE FROM IMPREZA 2.5i PREMIUM PACKAGE (IZ)
*Touch-Screen GPS Navigation System
AM/FM 100 Watt Stereo with Single CD Player
*Factory Installed SIRIUS Satellite Radio with Roof Mounted Antenna
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OUTBACK SPORT MODEL UPGRADE
IMPREZA OUTBACK SPORT (FW)
MODEL UPGRADE FROM 2.5i 5 DOOR (FZ)
12-Volt Cargo Power Outlet
*17 Inch X 7 JJ 5-Spoke Aluminum Alloy Wheels
Raised Suspension
Rear Disc Brakes
“Cargo Tray, Removable”
Unique Cloth Upholstery
Carrier Base
Two-Tone Body Color
*Vehicle Dynamics Control (VDC)
*Incline Start Assist (MT models Only)
*Brake Assist
AM/FM 80 Watt Stereo with 6-disc in-dash CD-changer
*10 Audio Speakers
Auxiliary Audio Jack
*MP3/WMA capability
*Leather-Wrapped Steering Wheel w/ Audio & Cruise Control Switches
Leather-wrapped Shift Knob
Front Fog Lights
*Heated Exterior Mirrors
*Dual Mode Heated Front Seats
*Windshield Wiper De-Icer
*Front Bumper Under Guard
*Rear Bumper Under Guard
*Side Molding
WRX MODEL UPGRADE
IMPREZA WRX (FF)
MODEL UPGRADE FROM 2.5i (FW)
2.5-Liter DOHC Intercooled Turbo Engine
*Vehicle Dynamics Control (VDC)
*Incline Start Assist (MT models Only)
*Brake Assist
205/50 R17 all-season tires
17 inch X 7 JJ 10-Spoke Aluminum Alloy Wheels
Rear Solid Disc Brakes
Rear Stabilizer Bar
Performance Design seats
Leather-Wrapped Steering Wheel
Leather-wrapped Shift Knob
Automatic Climate Control
Body-Color Exterior Mirrors
Body-Color Exterior Door Handles
*Electroluminescent Gauges
*Tilt and Telescope Steering Column
10
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WRX PREMIUM PACKAGE MODEL UPGRADE
IMPREZA WRX PREMIUM PACKAGE (KJ)
MODEL UPGRADE FROM IMPREZA WRX (FF)
AM/FM 80 Watt Stereo with 6-disc in-dash CD-changer
*10 Audio Speakers
*Auxiliary Audio Jack
*MP3/WMA Capability
*Heated Exterior Mirrors
*Dual Mode Heated Front Seats
*Windshield Wiper De-Icer
Front Fog Lights
*Leather-Wrapped Steering Wheel w/ Audio & Cruise Control Switches
*Aero Package
Front Lip Spoiler
Aerodynamic Side Ground Effects
Trunk Spoiler (4-Door)
Rear Diffuser (5-Door)
Note: Rear gate Spoiler Standard on all 5-door models
WRX SATELLITE RADIO & NAVIGATION PACKAGE MODEL UPGRADE
IMPREZA WRX SAT/NAV PACKAGE (UJ)
MODEL UPGRADE FROM WRX PREMIUM PACKAGE (KJ)
*Touch-Screen GPS Navigation System
*AM/FM 100 Watt Stereo with Single CD Player
*Factory Installed SIRIUS Satellite Radio with Roof Mounted Antenna
11
August 2007
2008 New Model Update
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INTERIOR
16
HVAC Controls
13
Steering Wheel
The steering wheel is equipped with audio and
cruise control satellite switches.
17
2008 Impreza Ignition Key - Laser Cut
2008 Impreza models’ ignition keys are laser
cut and require a special key cutting machine
for duplication or replacement.
14
NOTE:
Heater Switches
Two position seat heater switches are located
behind the park brake lever.
THE PROCEDURE FOR
OBTAINING A DUPLICATE OR
REPLACEMENT KEY WILL BE
POSTED ON SUBARUNET.COM
IN THE NEAR FUTURE.
15
HVAC and Navigation System
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20
60/40 Split Seats
18
21
Driver Seat
Cargo Space with Seats Backs Down
The front seats are equipped with side airbags
and seat belt pretensioners. The seats are
adjustable manual type.
A 60/40 split and trunk through feature is
provided.
22
19
Position of Luggage Cover
Rear Seat
The rear seats are set at a 26° (degree) angle
to provide additional leg room.
13
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2008 New Model Update
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23
25
Release Lever
Spare Tire Area
The luggage cover is removed by pushing on
the release lever on the right side.
The spare tire and tool kit are accessed by
removing the cargo area floor panel. The
metal cover forward of the spare tire provides
protection for the evaporative canister,
evaporative hoses and drain valve.
24
Cargo Area Light with Switch
A cargo area light is provided on the 5 door
on the driver's side rear trim panel and is
controlled by the white colored switch.
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August 2007
2008 New Model Update
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Navigation
29
26
Agree Screen
The operation of the navigation system and
the info display is the same as past models.
(Except the controls are all located on the
Navigation unit.)
Navigation Screen Starting Up
27
30
Navigation Screen Displaying Subaru Logo
INFO DISPLAY Main Screen
The navigation system built by Kenwood
contains the display, controls, audio unit and
navigation computer. The system will display
the Subaru logo at each engine start and then
proceed to the start up screen.
31
SET Functions
28
Radio without Navigation
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August 2007
2008 New Model Update
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Press and HOLD the tilt button to open the unit
for software installation.
32
Tilt /Eject Screen
34
The display of the Navi/Audio unit has a tilt
function that allows the screen to be adjusted
to 4 positions to allow for glare.
Map DVD Drawer
35
33
Showing Sensitivity if Obstructed to Close
CD /DVD Drawer
The word “close” on the now vertical panel
of the display indicates that the close control
is located on the now horizontal panel of the
display. Pushing the button will close the
display to the last tilt setting. The display
close operation is load sensitive and will
stop the close function if the display panel is
obstructed.
Changing of the CDs is accomplished by
pressing the DVD/CD button. This will tilt the
display almost 90 degrees to allow for installing
or removing music CDs or DVDs. (DVDs will
only display while the vehicle is not moving.)
Pressing the map button will tilt the display 90
degrees and automatically eject the currently
installed Map disc.
A navigation system software disc (shipped
with the vehicle) must be installed before
the controls of the Navi/Audio system will be
displayed.
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October 2007
2008 New Model Update
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Navigation Diagnosis
The Navi/Audio Unit contains a built in
diagnosis system. Start the engine and press
the agree button on the start up screen.
38
Dealer Diag Menu Screen
36
Audio Off Screen
The Dealer Diagnostic Menu will now
activate.
Next press {Vehicle Signal Info.}
Next press the {Audio/Sat} button and turn the
audio off.
NOTE:
NOTE: ALL OTHER FUNCTIONS MUST
ALSO BE OFF.
Next tap the screen on the LEFT side and then
the RIGHT.
DIAGNOSTIC INFORMATION IS
CURRENTLY ONLY AVAILABLE
IN VEHICLE SIGNAL INFO. AND
CONNECTION INFO.
Vehicle Signal Info. Provides the status of
the connections between the Navi/Audio Unit
and:
Controller Area Network Signals
CAN
BCU - (BIU)
METER - (Combination Meter)
AIR-Con - (Air Conditioning)
Vehicle Signals:
Illumination Control
Speed Signal
Reverse
Ignition
Parking (Brake)
37
Process of Activating Diagnostic Mode
THERE MUST BE A TOTAL OF SIX (6)
ALTERNATING TAPS TO ACTIVATE
DIAGNOSTIC MODE.
NOTE:
WHEN THE VEHICLE IS
PLACED INTO REVERSE
GEAR THE RADIO VOLUME
IS AUTOMATICALLY TURNED
DOWN.
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August 2007
2008 New Model Update
(Module 917)
Navigation/Audio System
39
Vehicle Signal Info. Screen
Pressing Menu will take you back to the Dealer
Diagnostic Menu.
41
Navi/Audio System
Press {Connection Info.}
40
42
Connection Info. Screen
The only current connection is the Aux Input.
Navi/Audio Top
Press {Menu} to go back to the Dealer
Diagnostic Menu.
The serial numbers for the Navi/Audio system
are located on top of the unit.
Press {Exit} to return to normal operation.
NOTE:
18
A REMANUFACTURE
PROGRAM WILL BE POSTED
ON SUBARUNET.COM IN THE
NEAR FUTURE.
August 2007
2008 New Model Update
(Module 917)
43
46
Back of Navi/Audio System
Satellite Radio Receiver
44
47
Navi/Audio Fan
Placement of Satellite Receiver
A cooling fan is installed on the back side of
the unit.
The satellite radio receiver will be located
above the Navi/Audio system.
48
45
Removing Navi/Audio System
Antennae Wires Attached to Roof
When removing the Navi/Audio System it
may be necessary to reach from under the
center cooling vents to reach the electrical
connectors. The locking tabs of the connectors
are on the bottom side.
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August 2007
2008 New Model Update
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Window
49
Antennae Attached to Roof
52
The antennae wires for the Audio and Satellite
Radio are routed to the roof. The inner antenna
is for the Audio and the outer antenna is for
the Satellite radio receiver.
Window Assembly Top View
The antenna amplifier is built into the base of
the antennae assembly.
53
Window Assembly Bottom View
The power windows operate with an electric
motor/cable assemble.
50
Satellite / Audio Antennae
54
Cable Guide
51
The lubrication installed during construction
and the low friction cable groove ensures
smooth window operation.
Radio Antenna
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55
57
Window Switch Assembly
Removing Outer Trim
Removal of the power window assembly
and window glass is accomplished by first
removing the window switch assembly cover
and screw. Remove the switch assembly and
the two screws securing the door panel to the
door.
Remove the window channel upper mounting
nut.
58
Door Panel
56
Removing Inner Trim
Remove the inner and outer trim panel.
NOTE:
THE POWER WINDOW MOTOR
AND DRIVE SYSTEM CAN
BE REMOVED WITHOUT
REMOVING THE GLASS.
59
Locking and Latch Cables
Separate the door panel from the door and
remove the locking and latch cable from the
door lever.
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62
60
Door with Gasket in Place
Bolts, Assist Tabs and Removal
Remove the speaker and separate the
harness clips from the door. Remove the door
gasket.
The window motor/cable assembly can
be removed by removing the bolts and
disengaging the assist tabs from the door.
Remove the assembly through the indicated
opening.
61
Removing Window Bolts
63
Connect the window switch to the harness and
raise the window so that the window mounting
bolts can be removed.
Lower Window Channel Bolt
Remove the lower window channel bolt.
The window can now be removed, guiding it
to the outside of the door frame.
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64
Turbo Model Combination Meter
All warning lights are illuminated during the time the sequential sweep takes place.
65
Turbo Model Key On Engine Off
NOTE:
THE ODOMETER AND TRIP METER A B ARE DISPLAYED SEPARATELY.
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66
Sedan Model (Naturally Aspirated)
67
Naturally Aspirated Model Combination Meter
All models are equipped with a sequential sweep and WRX models are equipped with sequential
illumination. The combination meter has an available D check procedure. Turbo models are
equipped with a temperature gauge and the Naturally Aspirated models are equipped with a
temperature warning light.
Temperature warning light logic
< 50°C (122°F)
Blue
113°C (235°F)
Red Blink
120°C (248°F)
Red On
The Red indicator will turn off after the temperature has dropped to 111°C (232°F). The light
will change to blue after the temperature has dropped to 45°C (113°F). (BIU controlled)
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August 2007
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68
HVAC Location
The air filter for the HVAC is located behind
the glove box.
69
Air Filter
Push up on the filter to remove it from the
blower housing.
70
Steering Support and Dash Assembly
The steering support beam and the dash
assembly are removed as a unit.
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August 2007
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ELECTRICAL
Fuse Boxes and Relay Holders
Fuses and Relays are located in 4 places on the 2008 Impreza.
F27
F9
11
8
12
10 11
13
72
The main fuse box in the
engine compartment has
expanded to accept the F9
secondary air relay holder.
9
3 4 5
6
7
16
14 15
17
5
1
1
3 4
2
2
7 8
9
10
15
18
19
20 21 22
RELAY HOLDER
6
12
14
13
16
SECONDARY AIR RELAY HOLDER
73
74
F-27 relay holder has
been used on previous
models.
F-9 will not be installed on
naturally aspirated models.
75
Inside Main Fuse Box Cover
26
August 2007
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The F-9 secondary air relay and circuits control the secondary air pump equipped on turbo
models.
A14
R
L
B14
A16
L
W
15
60A
13
RG
SECONDARY AIR PUMP RELAY
16
14
12
YB
11
10
YL
F9
W
9
7
8
L
F9
SECONDARY AIR COMBINATION VALVE RELAY 2
D4
F9
F9
A20 YB
A11 YL
A8
RG
RB
B2
A5
RB
R
B12
A18
R
B
B4
1
B9
W
YB
RG
B
R
F11
B14
B15 RB
E/G(TB)-07
B: B143 D: B144
R
YB B10
RG
E/G(TB)-09
Y
Z
Q
C8
E/G(TB)-09
R
5
MAIN FUSE BOX (M/B)
A: F37
SECONDARY AIR COMBINATION VALVE RELAY 1
1
YL
2
3
R
4
RB
BUS BAR
RELAY
HOLDER
2
W
W
(B)
6
(B)
10A
MB-33
W
TO POWER SUPPLY CIRCUIT
MB-34
SECONDARY
AIR PUMP
B: B135
C: B136
ECM
GP
76
Engine Wiring Schematic Showing F-9
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August 2007
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B220
1
2
3
4
5
6
7
8
B225
9
10
11 12
13
14
15 16
17
18
19 20
21
22
23 24
25
26
27 28
29
30
31 32
33
34
35 36
37
38
39 40
RELAY BLOCK
77
78
Fuse Box Next to Hood Release
Relay Block B220 and B225
The fuse box located next to the hood
release houses the fuses below.
B225 has also been equipped on previous
models and relay block B220 which is new
has the same shape
79
Inside Fuse Box Cover
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August 2007
2008 New Model Update
B220
1
2
3
4
5
6
7
8
(Module 917)
B225
B386
9
10
11 12
13
14
15 16
17
18
19 20
21
22
23 24
25
26
27 28
29
30
31 32
33
34
35 36
37
38
39 40
1
2 3 4
5
6
RELAY BLOCK
7
81
80
Relay Block B220 and B225
B386 Houses the Blower Relay
82
Location of B220
B220 is located behind the glove box and next to the left side of the blower motor housing.
NOTE: THE CIRCLED CONNECTOR IS THE INSPECTION MODE CONNECTOR.
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83
Driver Side Kick Panel
A set of connectors at the driver side kick panel looks identical to the inspection mode
connectors but they must stay connected.
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August 2007
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WR
WR
WY
5
1
15A
WR
STARTER MOTOR
B225
15A
STARTER
RELAY
: LW
: WL
: GB
: WR
: WB
: WR
3
: MT MODEL
AT MODEL
: MT MODEL
AT MODEL
: MT MODEL
AT MODEL
15A
WB
9
WL
WL
11
*1
*2
*3
MB-22
SBF-5
(B)
WY
MB-23
SBF-7
(B)
WB
MB-24
SBF-7
(B)
WL
TO POWER SUPPLY CIRCUIT
ST-2
IG SW
(ST)
ST-1
F/B FUSE NO. 21
(ST)
B220
1
T2
30
32
*2
B: B135
WR
2
6
WR
WR
9
WL
21
11
12
10
WL
23
24
22
Lg
WL
Lg
WB
WL
37
GR
B220
E/G(NA)-05
E/G(NA)-09
E/G(NA)-05
E/G(NA)-10
E/G(NA)-09
B25
C1
A: B134
39
BL
LR
T2
C31
C20 BL
C32
*1
B25
2
RL
AT
GB
LR
LW
MT
AT
NEUTRAL
POSITION
SWITCH
A/F,
OXYGEN
SENSOR
RELAY
B
C
D
E
F
C: B136
YB
12
A7
BY
ELECTRONIC
THROTTLE
CONTROL
RELAY
B220
MT
WL
WL
12
40
WR
B220
38
7
B220
Lg
BW
D
YB
11
N
YB
WB
R
YB
P
WL
T7
29
T3
31
INHIBITOR
SWITCH
B12
IG
RELAY
C21 RL
CLUTCH
SWITCH
MAIN
RELAY
B2
AT
AT
WL
B106
1
MT
B14
2
AT
WB
MT
C23 Lg
10
*3
4
12
BL
BATTERY
MT
FUSE
(RELAY
BLOCK)
ECM
84
B220 Relay Circuits
31
August 2007
2008 New Model Update
(Module 917)
M-A/C-02
TO POWER SUPPLY CIRCUIT
FB-8
F/B FUSE NO. 27 (B)
F/B FUSE NO. 28 (B)
BrY
BrY
2
3
BY
24
BrY
27
GY
28
2
3
i1
11
VY
B87
4
BLOWER
MOTOR
i1
2
GY
B36
OFF
BLOWER
FAN
SWITCH
BOr
1
1
B36
7
8
LgW
BL
LY
LgW
BL
B89
BOr 23
VY
6
1
2
4
6
GY
BR
B163
2
i15
3
4
1
i1
VY
4
GOr
9
i16
3 LgW
10 BL
RL
6
B
B
LgW
BL
GY
BOr
5
B36
5
BLOWER
DIODE
BR
VY
4
1
B386
INTAKE DOOR
ACTUATOR
REF. TO REAR DEFOGGER SYSTEM
[R/DEF-01]
1
B27
BLOWER
MOTOR
RELAY
BY
GL
BLOWER
RESISTOR
GY
GOr
GY B11
1
ECM
A
GOr
B: B135
M-A/C-01
2
4
BOr
GL
GOr
FB-45
F/B FUSE NO. 22
(IG)
A/C CONTROL PANEL
REF. TO GND
[GND-07]
B386
1
2 3 4
5
6
7
85
B386 Blower Motor Relay Wiring Schematic and B386 Relay Circuit
32
August 2007
2008 New Model Update
(Module 917)
BODY INTEGRATED UNIT (BIU)
87
BIU Location
The BIU is located to the lower side of the steering column.
Body Integrated Unit
-
Location: steering shaft, position similar to current Legacy
Hardware and functions based on Legacy
CAN system
Immobilizer operation
Timer controls for wipers and room lamps
Door lock control
Body Integrated Unit Customizing
(New Items)
- MT / AT: disable or enable Key inter lock, shift lock
- 6 MT / Other than 6 MT: Allows speed sensor signal from 6 MT to serve as an input for
VDC.
- Sedan / Wagon: disable or enable the electrical lock of R. Gate
33
August 2007
2008 New Model Update
(Module 917)
Lighting Switch
No parking switch is available.
During DRL operation only the front lights are illuminated. The DRL resistor is located under
the right side head light.
Headlight Operation
Condition
Explanation of condition
Headlights switch condition needed to
turn on headlights or parking lights
Normal
Ignition or Engine ON
Turn switch to ON
Key In
Ignition OFF
Key Out
A. Lights turn ON when key is placed into the
ignition switch. (Lights were on when the
key was last removed.)
B. Turn switch to ON
A. Turn switch to On
B. Turn switch OFF then ON
NOTE: BUZZER SOUNDS IN THIS MODE
WHEN THE DRIVER'S DOOR IS
OPEN
Automatic Transmission models - DRLS DO NOT OPERATE IN PARK.
All models parking brake on - DRLS DO NOT OPERATE.
WRX models have a headlight on indicator, other models DO NOT.
Keyless Entry Unit
Construction: Same as Legacy
Application:
Normal key model
The unit receives wireless signal.
Detected signal goes to BIU.
Keyless entry unit is located on the driver side C pillar (5 door) and on the top of the package
shelf on sedan models.
34
August 2007
2008 New Model Update
(Module 917)
MULTI JOINT CONNECTOR
90
89
Location of Multi Joint Connector
Releasing Multi Joint Connector
91
Connector Side of Multi Joint Connector
The 12 connector Multi Joint Connector is located on the top of the fuse box and is used on
2008 Impreza models that are not equipped with the Smart Start System. The Smart Start
System is equipped on certain European and Japanese domestic models and provides a
keyless entry and starting system.
35
August 2007
2008 New Model Update
(Module 917)
92
Front View-Multi Joint Connector
93
Back Side Cover Removed-Multi Joint Connector
36
August 2007
2008 New Model Update
(Module 917)
94
Multi Joint Connector
The Multi Joint Connector completes the circuits of many systems providing power and carrying
signals.
There is currently no designation for the Multi joint connector.
GB-6
B123
B181
B363
B364
C
B182
B124
B99
B231
AB2
B225
B367
B32
B65
B40
B439
D
B437
(BLUE)
B439
(GREEN)
B445
B438
B444
B437
B443
B436
B442
B435
B441
B434
1
1 2 3 4 5
B440
2
96
95
Multi Joint Connector (line Art)
Connector Colors
37
August 2007
2008 New Model Update
(Module 917)
1
LB
GY
35
B440
5
MB-6
REAR DEFOGGER
RELAY
MB-5
M/B FUSE NO. 10
RL
MULTI JOINT CONNECTOR
GY
33
GR
LB
FB-38
F/B FUSE NO. 12
(IG)
FB-32
F/B FUSE NO. 4
(IG)
GY
FB-4
F/B FUSE NO. 9
(B)
VG
TO POWER SUPPLY CIRCUIT
GY
B439
WIPER
DEICER
RELAY
WIPER
RL
12
B: B280 D: B279
BODY INTEGRATED UNIT
B38
i3
RL
GR
B1
i84
1
A:
D16 VG
L
D15
RY
L
RY
36
34
B225
97
Wiper Deicer Wiring Schematic
38
August 2007
2008 New Model Update
5
4
BrY
Gr
Gr
17
NAVIGATION UNIT
PG
i50
(Module 917)
R98
3
3
B437
Gr
9
i3
B38
Gr
Gr
BrY
PG
1
i53
2
i1
B36
MULTI JOINT
CONNECTOR
Gr
PG
BrY
B439
5
B99
VDC
B301
ABS
CONTROL
MODULE
B310
Gr
REF.TO
BACK-UP LIGHT SYSTEM
[BACK/L-01]
23
33
PG
PG
Gr
ABS
R3
R4
PARKING
BRAKE
SWITCH
VDC
CONTROL
MODULE
98
Navigation Unit Wiring Schematic
39
August 2007
4
BL
GY
MULTI
JOINT
CONNECTOR
B40
B434
VR
GY
RL
VR
1
2
3
WL
4
B367
8
7
BY
BY
B
i97
IMPACT
SENSOR
BrR
REF. TO ENGINE
ELECTRICAL SYSTEM
[E/G(NA)-04]
[E/G(TB)-05]
SEC-01
C20
JOINT
GROUND
CONNECTOR
*1
DATA LINK
CONNECTOR
2
2
B440
A
B17
B444
VR
SEC-01
B
BY D27
BY A28
B8
RL
W
GY
B
BL
B443
1
BY
VR
5
B440
BY
7
BODY INTEGRATED
UNIT
*1
W
5
C: B281 D: B279
BY
16
GY
B: B280
3
GY
i84
VR
B438
8
1
MULTI
JOINT
CONNECTOR
A:
MB-27
M/B FUSE NO. 13
(B)
GY
FB-32
F/B FUSE NO. 4
(IG)
VR B20
TO POWER SUPPLY CIRCUIT
(Module 917)
B
2008 New Model Update
99
Security System Wiring Schematic
40
August 2007
2008 New Model Update
(Module 917)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
2008 Impreza SRS standard equipment includes frontal dual deployment airbags, side airbags,
curtain airbags and front seat belt pretensioners. WRX models are equipped with front seat
active headrest.
A new satellite safing sensor and the SRS sensor BUS improve the accuracy of collision
judgment and SRS airbag system operation.
The SRS sensor BUS carries signals from all sensors to the SRS control unit. The signals, similar
to CAN communications, provide circuit and sensor conditions to the SRS control unit.
As a result of the improved system operation new DTCs have become available.
(See next Page)
Side
Airbag
Sensor
Front
Sensor
Curtain
Airbag
Sensor
C
B
Ft
ECU
Satellite
Safing
Sensor
S
Ft
B
C
101
Satellite Safing Sensor Schematic
102
Satellite Safing Sensor Location
41
August 2007
2008 New Model Update
(Module 917)
DTC
Display
Diagnosis content
E2
E3
E4
Front Sensor Bus RH Communication
error
• Open or short circuit in harness (RH) between airbag control module and front sub sensor.
• Front sub sensor (RH) is faulty.
• Airbag control module is faulty.
E6
E7
E8
Front Sensor Bus LH Communication
error
• Open or short circuit in harness (LH) between airbag control module and front sub sensor.
• Front sub sensor (LH) is faulty.
• Airbag control module is faulty.
E9
EA
EB
EC
Side Sensor Bus RH Communication
error
• Open or short circuit in harness (RH) between airbag control module and side sensor.
• Side airbag sensor (RH) or curtain airbag sensor
(RH) is faulty.
• Airbag control module is faulty.
ED
EE
Side Sensor Bus RH Communication
error
• Open or short circuit in harness (RH) between airbag control module and side sensor.
• Side airbag sensor (RH) or curtain airbag sensor
(RH) is faulty.
• Airbag control module is faulty.
F1
F2
F3
F4
Side Sensor Bus LH Communication
error
• Open or short circuit in harness (LH) between airbag control module and side sensor.
• Side airbag sensor (LH) or curtain airbag sensor
(LH) is faulty.
• Airbag control module is faulty.
F5
F6
Side Sensor Bus LH Communication
error
• Open or short circuit in harness (LH) between airbag control module and side sensor.
• Side airbag sensor (LH) or curtain airbag sensor
(LH) is faulty.
• Airbag control module is faulty.
F8
F9
FA
Satellite Sensor Bus Communication
error
• Open or short circuit in harness between airbag
control module and satellite safing sensor.
• Satellite safing sensor is faulty.
• Airbag control module is faulty.
3A
Front Sub Sensor RH False installa- • Front sensor (RH) is misinstalled.
tion
• Airbag control module is faulty.
3B
Front Sub Sensor LH False installation
3C
Satellite Sensor Bus failure
3D
Satellite Sensor False installation
• Front sensor (LH) is misinstalled.
• Airbag control module is faulty.
Satellite safing sensor is faulty.
• Satellite safing sensor is misinstalled.
• Airbag control module is faulty.
5A
Side Airbag Sensor RH False instal- • Side A/B sensor is misinstalled.
lation
• Airbag control module is faulty.
5B
Side Airbag Sensor LH False instal- • Side A/B sensor is misinstalled.
lation
• Airbag control module is faulty.
5C
Curtain Airbag Sensor RH False
installation
• Curtain A/B sensor is misinstalled.
• Airbag control module is faulty.
5D
Curtain Airbag Sensor LH False
installation
• Curtain A/B sensor is misinstalled.
• Airbag control module is faulty.
103
2008 Airbag Trouble Codes
42
August 2007
2008 New Model Update
6
16
24
YG
B
Lg
YG
2
SIDE AIRBAG
MODULE RH
G
B
AB33
CURTAIN AIRBAG
SENSOR RH
SIDE AIRBAG
SENSOR RH
4
3
2
1
4
AB28
3
2
3
1
2
PRETENSIONER
RH
B
AB34
AB24
AB26
G
REF.TO OCCUPANT
DETECTION SYSTEM
[ODS-01]
5
YW
YW
1
W
W
17
L
L
18
AIRBAG CONTROL MODULE
8
YB
YB
7
Y
YL
YL
Y
4
3
YR
YR
AB18
(Module 917)
CURTAIN AIRBAG
MODULE RH
104
Airbag Wiring Schematic
106
105
Connector Lock release tab
White Locking Plate
The connector at the SRS/Control unit unifies the body harness and the two SRS harnesses.
Push down on the indicated tab and pull outward on the connector lock to release from the
control unit.
Remove or loosen the white locking plate and apply pressure at the indicated release tab to
disengage the connectors from the connector collar.
43
August 2007
2008 New Model Update
(Module 917)
EVAPORATIVE SYSTEM
110
WRX Rear of Vehicle with Carpet Removed
108
Carpet Location Tabs
111
Sedan Trunk
109
Sliding Lock Tabs
When removing the carpet from the rear of the
vehicle the right side is fastened with a sliding
lock and left side by simple trim panel tabs.
Releasing of the sliding locks is accomplished
by pushing it to the right and sliding to the
back.
112
Sedan Covers over Evaporative Canister and
Evaporative Hoses
Removing the two metal covers from the cargo
or trunk area will expose the evaporative
canister, evaporative hoses and the drain
valve. This applies to the 5 door and the Sedan
models.
44
August 2007
2008 New Model Update
(Module 917)
115
113
Evaporative System Hose Connection
Drain Valve
Sliding them too far will require resetting the
locking tabs into the channels made into
the hose connection. The quick connector
provides a locking action by placing one tab
in front and one tab behind a locking collar.
When beginning the release procedure use
a small screw driver and gently pry each side
away from the center of the quick connector
while pulling back.
The drain valve is equipped with an air filter,
and cannot be serviced separately from the
filter.
114
Quick Connectors
When disengaging the quick connectors of the
evaporative system, slide them back about
half way.
45
August 2007
2008 New Model Update
(Module 917)
Hose Connections
116
Hose Connections
46
August 2007
2008 New Model Update
(Module 917)
117
Hose A and B
119
118
Hose B
Hose B
Hose A and B connect the drain valve to the atmosphere.
47
August 2007
2008 New Model Update
(Module 917)
120
Hose C and D
121
122
Hose C
Hose D
Hose C and D connect the drain valve to the evaporative canister.
48
August 2007
2008 New Model Update
(Module 917)
123
Hose E and F
125
124
Hose E
Hose F
Hose E and F connect the evaporative canister to the fuel tank. (ORVR)
49
August 2007
2008 New Model Update
(Module 917)
126
Hose G and H
128
127
Hose G
Hose H
Hose G and H connect the evaporative canister to the fuel tank. (Purge in to canister)
50
August 2007
2008 New Model Update
(Module 917)
129
Hose I
Hose I connects the evaporative canister to the purge control valve.
130
Pressure Sensor
The fuel tank pressure sensor is located on the right rear of the fuel tank.
51
August 2007
2008 New Model Update
(Module 917)
FUEL TANK
134
Fuel Tank
132
The fuel tank is equipped with a main and sub
fuel pump. The fuel level must be lowered
according to the service manual before the
pumps can be removed. A fuel drain is not
provided on the tank.
Main Fuel Pump
The fuel pump control unit (if equipped) is
located behind the right rear cargo area trim
panel.
133
WRX Fuel Pump Control Unit
52
August 2007
2008 New Model Update
(Module 917)
AUTOMATIC TRANSMISSION
Changes/Enhancements
• Detent roller with needle bearing is newly adopted in order to reduce frictional force
between the detent roller and the manual plate.
• Shifter inputs to BIU and BIU controls shift lock solenoid.
• All wheel drive has changed from Variable Torque Distribution (VTD) to Multiple plate
Transfer (MPT).
Differential Gear Ratio
2.5 NA
5 MT
3.900
4 AT
4.111
2.5 Turbo 5 MT
3.900
4 AT
3.900
136
Differential Gear Ratio chart
Gear Ratio
1st
2nd
3rd
4th
Reverse
2.785
1.545
1.000
0.694
2.272
137
Gear Ratio chart
Air Bleeding Procedure (4AT without push start)
Condition
This procedure should apply after the services below.
• Replacement of transmission
• Replacement of control Valve body
• Overhaul of transmission
Conditions needed
– Lifting-up the vehicle and apply the parking brake.
– Turn on ignition key and connect SSMIII.
– Confirm No DTC and ATF temperature is less than 60°C (140°F) with SSMIII.
Confirm no electrical load (Headlight, A/C, Rear defogger, etc.)
53
August 2007
2008 New Model Update
(Module 917)
Procedure
1.
Shift the select lever to “P” position and apply parking brake firmly.
2.
Lift-up the vehicle
3.
Connect SSM to data link connector
4.
IG switch ON, engine should not run.
5.
Start SSMIII and select Transmission in Each system, Perform "Clear Memory 2”.
6.
Confirm there is no DTC.
7.
Show “Normal Data Display” of transmission.
– Confirm ATF temperature: below 60ºC (140°F) with SSMIII.
8.
Shift the selector lever to “R” position.
9.
Turn the ignition switch to “OFF” position.
10. Wait until ACC power goes off and “Communication Failed!” is displayed on the display
(aprox. 30 to 40 seconds)
– Select “OK” and prompt appears to save data, please ignore.
– Return to system selection menu.
11. Depress the brake pedal fully by left foot.
(Retain its position until the Air breeding procedure is finished).
12. Turn on the ignition switch.
13. Shift the selector lever to “P” range and wait for 5 seconds.
14. Shift the selector lever to “R” range and wait for 5 seconds.
15. Shift the selector lever to “N” range and wait for 5 seconds.
16. Shift the selector lever to “D” range and wait for 5 seconds.
17. Shift the selector lever to “N” range and wait for 5 seconds.
18. Slowly depress the accelerator pedal fully.
19. Slowly release the accelerator pedal fully.
20 Start the engine.
21. Shift the selector lever to “D” position.
22. Start SSMIII and select “Transmission” in “Each system”.
23. The TCM starts the process, when the “SPORT” indicator light starts blinking at 2Hz.
• When the air bleeding process is finished, the “SPORT” indicator light goes off.
• If the “SPORT” indicator light does not start blinking or if blinking of the “SPORT” indicator
light changes from 2Hz to 4Hz, repeat the procedure from step 4.
24. Turn off the ignition key and wait 20 second.
25. Shift the select lever to “P” position.
54
August 2007
2008 New Model Update
(Module 917)
Initial-Learning Procedure (4AT without push start)
• This procedure should apply when there is shift shock or after the services below.
– Replacement of TCU
– Replacement of transmission
– Overhaul of transmission
– Replacement of control valve body
– After performing “Memory clear 2”
Procedure
1.
Shift the select lever to “P’” position and apply parking brake firmly.
2.
Lift-up the vehicle
3.
Connect SSMIII to data link connector
4.
IG switch ON, engine should not run.
5.
Start SSMIII and select Transmission in Each system
6.
Perform the "Clear Memory 2”.
7.
Confirm there is no DTC.
8.
Show “Normal Data Display” of transmission.
Confirm ATF temperature: 60ºC - 90ºC (140ºF - 194ºF) by SSMIII.
9.
Shift the selector lever to “R” position
10. Confirm no electrical load (Headlight, A/C, Rear defogger, etc.)
11 Turn the ignition switch to “OFF” position.
12. Wait until ACC power goes off and “Communication Failed!” is displayed. (aprox. 30 to
40 seconds)
– Select “OK” and prompt appears to save data, please ignore.
– Return to system selection menu.
13. Depress the brake pedal fully by left foot.
(Retain its position until the initial-learning procedure is finished).
14. Turn on the ignition switch and Start SSMIII
15. Select “Transmission” in “Each system” and select “Normal Data Display”.
16. Shift the selector lever to “P” range and wait for 5 seconds.
17. Shift the selector lever to “R” range and wait for 5 seconds.
18. Shift the selector lever to “N” range and wait for 5 seconds.
55
August 2007
2008 New Model Update
(Module 917)
19. Shift the selector lever to “D” range and wait for 5 seconds.
20. Shift the selector lever to “N” range and wait for 5 seconds.
21. Slowly depress the accelerator pedal fully.
22. Slowly release the accelerator pedal fully.
23. Start the engine.
24. Shift the selector lever to “D” position.
• The TCM starts the process, when the “SPORT” indicator light starts blinking at 2Hz.
• When the air bleeding process is finished, the “SPORT” indicator light goes off.
• If the “SPORT” indicator light does not start blinking or if blinking of the “SPORT” indicator
light changes from 2Hz to 4Hz, repeat the procedure from step 4.
25. Shift the selector to "N" position and turn off the ignition key.
26. Shift the selector lever to "P" position and wait 20 seconds.
56
August 2007
2008 New Model Update
(Module 917)
MANUAL TRANSMISSION CHANGES/
ENHANCEMENTS
Model
Type
Non-turbo model
Turbo model
5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio
Front reduction gear
3.454
2.062
3.166
1.882
3rd
4th
1.448
1.088
1.296
0.972
5th
Reverse
0.780
0.738
3.333
Final
Type of gear
Gear ratio
Hypoid
3.900
Transfer
Type of gear
Gear ratio
Helical
1.000
Final
Type of gear
Gear ratio
Hypoid
3.900
Rear reduction gear
Front differential
Center differential
1st
2nd
Type and number of gear
Type and number of gear
Straight bevel gear (Bevel pinion: 2, Bevel gear: 2)
Straight bevel gear (Bevel pinion: 2, bevel gear: 2 and viscous coupling)
Transmission gear oil
Transmission gear oil capacity
GL-5
3.5 l (3.7 US qt, 3.1 Imp qt)
139
Manual Transmission Chart
5 MT Speedometer gear is deleted and wheel speed signal is taken from ABSCM.
57
August 2007
2008 New Model Update
(Module 917)
Improvement of 1st - 2nd gear shift feeling
In order to reduce shifting friction, two detent balls are used instead of key springs.
140
Difference of Detent Balls and Key Springs
NOTE: Only two detent balls are used on the 1st and 2nd gear hub.
141
142
Detent Ball in place
Detent Ball front/rear view
143
144
1st and 2nd slider
1st and 2nd Hub
58
August 2007
2008 New Model Update
(Module 917)
6 SPEED MANUAL TRANSMISSION (2008)
146
Construction
147
Oil Sump
The 6 MT for 2008 model year has replaced the oil pump with oil guides. The oil pump pick
up screen has been deleted.
The oil guides are positioned to catch oil splashed by moving gears and provides a path for
the oil to flow, lubricating bearings, bushings and all moving parts inside the transmission.
NOTE:
THERE HAS BEEN NO CHANGE IN THE POSITION OF THE BUSHINGS AND
THE OILING DELIVERY HOLES MACHINED IN THE MAIN AND HOLLOW
SHAFTS.
59
August 2007
2008 New Model Update
(Module 917)
148
150
Front Oil Guides
Main Case Oil Guides
Oil splashed in the differential is delivered from
the pinion oil guide to the pinion bearing, 1st
gear and 2nd gear bushings, sliders, gears and
all moving parts of their gear sets.
The two (2) on the left side carry oil to the rear
main shaft and hollow shaft bearings.
The front main shaft bearing is lubricated by
the front main case oil guide.
151
Main Case Oil Guides Close up
The one (1) on the right side carries oil to
the extension housing. An oil guide in the
extension housing routes oil to the transfer
driven shaft bushing.
149
Previous Oil Pump
The main case is equipped with three (3) oil
guides.
152
Extension Housing Oil Guide
60
August 2007
2008 New Model Update
(Module 917)
153
156
Friction Tab
Main Case Oil Guides Bench Shot
The oil guides are positioned into place by
friction, bolts and incorporated clips.
Use care when removing the oil guides from
the transmission.
154
Clip
157
Clip
155
Bolts
61
August 2007
2008 New Model Update
(Module 917)
158
End Plate
Bearing end plate, previously the oil pump
cover.
159
Previous Oil Pump location
New case design, no oil pump.
62
August 2007
2008 New Model Update
(Module 917)
5AT MAJOR MODIFICATION POINTS
161
5 Speed Automatic Transmission
The 2008 5AT for Legacy and Tribeca has been redesigned to improve performance. The
modification points include the Torque Converter, Hydraulic Control Valve assembly, Low
Coast Brake and Forward one-way clutch.
63
August 2007
2008 New Model Update
(Module 917)
162
Artwork
Low Coasting Brake and Forward one-way clutch are eliminated for simplifying the system
and improving shift quality
64
August 2007
2008 New Model Update
(Module 917)
Application Chart
Fr/B
In/C
H&LR
P
o
o
R
o
o
N
o
o
M
1st
o
2nd
o
3rd
o
4th
5th
o
Fr/B
Di/C
o
o
o
M
o
o
M
o
o
o
o
o
o
o
o
o
o
o
o
o
H&LR
R
o
o
N
o
o
1st
o
M
2nd
o
3rd
o
Di/C
Rev/B
o
o
FWD/B
o
o
o
OWC fwd
o
o
In/C
LC/B
o
o
o
o
OWC 1st OWC 3rd
o
o
5th
FWD/B
o
P
4th
Rev/B
OWC 1st OWC 3rd
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
163
Application Chart
164
Artwork (showing differences in what is deleted)
A forward brake hub guide plate and a seal ring are deleted, due to deletion of Low Coasting
Brake and Forward One-Way clutch.
65
August 2007
2008 New Model Update
(Module 917)
165
Hydraulic Control Valve
166
Mounting Bolts
The memory box has been deleted from the Hydraulic Control Valve Assembly. Memory box
functions are now incorporated into the Transmission Control Module (TCM).
66
August 2007
2008 New Model Update
(Module 917)
167
Transmission Harness
168
Torque Converter
67
August 2007
2008 New Model Update
(Module 917)
169
Differential Case cut view
Drain valve is deleted due to change of converter.
170
Drive Plate
Drive plate is changed due to change of torque converter.
68
August 2007
2008 New Model Update
(Module 917)
Drive Pinion Shaft and ATF Level Gauge
171
Drive Pinion Shaft
New type hollow pinion shaft is employed to improve rigidity. (Turbo charged engine vehicle)
172
ATF Level Gauge
ATF level gauge is changed due to change of hydraulic control valve.
Others
• Transmission Control Module (TCM)
• With the adoption of the new hydraulic control valve assembly, TCM is changed.
• Blipping control: (in Turbo charged engine vehicle)
• Blipping control range is enlarged
• TCM initial learning procedure.
• Procedure for TCM initial learning is simplified.
69
August 2007
2008 New Model Update
(Module 917)
2.5 LITER AIR
CONDITIONING BELT
The air conditioning compressor drive belt is
a new stretch type belt. It is designed to be
installed to the vehicle only once and must be
replaced if it is ever removed. The use of this
type belt makes it unnecessary to use a belt
tensioner.
176
WRX Engine
174
Air Conditioning Compressor Belt front View
177
Sedan Engine
Servicing of the belt requires removing of
the alternator/power steering belt (this belt
has a tensioner) and then cutting the old air
conditioner compressor drive belt with wire
cutters of a similar tool. (Applicable to both
Naturally Aspirated and Turbo models)
175
Air Conditioning Compressor Belt from under car
70
August 2007
2008 New Model Update
(Module 917)
180
178
Cutting off Air Conditioning Compressor Belt
Lower Belt Guide in place with Retaining Clip
The new belt is packaged with the tool needed
to install the belt. This tool is designed to be
used only once and can be discarded after
belt installation.
Next position the lower belt guide on the
crankshaft pulley. The grooves on the bottom
of the lower belt guide must rest in the grooves
of the crankshaft pulley. The metal retaining
clip is then inserted into one of the holes on
the front side of the crankshaft pulley. The
retaining clip has a short and long side. The
longer side is placed over the lower built guide
and over the belt.
179
Upper Belt Guide in position
Begin belt installation by routing the new belt
around the compressor pulley. Install the upper
belt guide with the packaged bolt. Ensure
the positioning tab of the upper belt guide is
inserted into the lower hole.
181
22mm Socket and Ratchet in place
Rotate the crankshaft pulley with a 22mm
socket and ratchet until the belt is fully engaged
with the grooves on the crankshaft pulley.
71
August 2007
2008 New Model Update
(Module 917)
182
Belt Fully Engaged on Crankshaft Pulley
Confirm belt is fully engaged on both pulleys.
183
Air Conditioning Compressor Belt Kit
72
August 2007
2008 New Model Update
(Module 917)
CHASSIS
185
G Sensor
Incline Start Assist
Impreza vehicles with manual transmission are equipped with “Incline Start Assist”. This is a
type of hill holder but only stays active for approximately 1 second after the brake pedal has
been released. This logic control affects the Hydraulic Control Unit, maintaining brake pressure
at the wheels using the inlet and outlet solenoid valves. The G sensor will indicate the angle of
the incline to the HCU and the brake pressure set by the driver will be held for approximately
1 second after releasing the brake pedal. This allows the driver to increase the throttle and
engage the clutch. (Pressure is maintained on all four wheels).
186
Brake Pedal Off and Brakes Releasing
73
August 2007
2008 New Model Update
(Module 917)
Suspension
187
189
Engine Undercover
The engine undercover must be removed to
change the oil and or filter.
Front Suspension
The front suspension is now a box type (same
as Legacy) and the sub frame has been
eliminated. The front axle inner joint is an AAR
type (Angular Adjusting Roller) and the outer
joint is unchanged from last year's model.
188
Under Cover Off
190
Rear Suspension
The rear suspension is a single wish bone
type. (Same as Tribeca)
The rear axle inner joint is a DOJ (Double off
set Joint) and the outer joint is an EBJ (Eight
Ball Joint)
74
August 2007
2008 New Model Update
(Module 917)
194
191
Close up of TPMS
Muffler
The Tire Pressure Monitoring System (TPMS)
operates similar to past model year vehicles.
The transmitter is now serviceable separately
from the tire valve. Remove and install
the screw connecting the tire valve to the
transmitter with a T-10 Torx® bit.
192
Transverse Mounted Muffler
A transverse mounted muffler is used on the 5
door models due to the shortened body over
hang.
195
Tire Pressure Monitoring System
TPMS under Canister
The TPMS control unit now identifies tires by
numbers.
193
Wheel with TPMS
75
August 2007
2008 New Model Update
Item
(Module 917)
Valve
†
Tire 1 FN code
†
Tire 2 FN code
†
Tire 3 FN code
†
Tire 4 FN code
†
Tire 1 air pressure
†
Tire 2 air pressure
†
Tire 3 air pressure
†
Tire 4 air pressure
†
Vehicle Speed
†
Pressure warning
†
Return pressure
†
Transmitter power supply
†
DIAG sw
†
INDICATOR LAMP
LEARN
LEARN
LEARN
LEARN
33.19
31.79
31.59
31.79
0
26.99
30.39
ON MODE
OFF
OFF
Unit
psig
psig
psig
psig
MPH
psig
psig
196
TPMS Data
During shipment to the port the TPMS transmitters are turned off. The port turns the transmitters
on with the tool number J-45295. This is the same tool used during tire registration.
Tow Hooks and Tail Light
197
Front Tow Hook
Front and Rear tow hook connections. The rear tie down hooks have been eliminated and
vehicle is shipped to the port and to the dealer using the rear tow hook connection and tow
hook. Place the tow hook back to the tool storage during PDI.
76
August 2007
2008 New Model Update
(Module 917)
198
Rear Tow Hook
199
Front View of the 5 Door Brake Light
200
Back View of the 5 Door Brake Light
The brake light of the 5 door model is a 12 LED
assembly that must be replaced as a unit.
The remaining lights are replaceable bulbs.
77
August 2007
Slide Sequence
Slide No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Description
Page No.
Title Slide (2008 New Model Update Models)
Created By
Teaching Aids
2008 Impreza Introduction
2008 2.5i Impreza 5 Door Front View
2008 2.5i Impreza 5 Door Side View
2008 2.5i Impreza Side View
2008 Impreza 2.5i 4 Door Side View
2008 WRX Front View
2008 WRX Side View
Dimension Chart
Title Slide (Interior)
Steering Wheel
Heater Switches
HVAC and Navigation System
HVAC Controls
2008 Impreza Ignition Key - Laser Cut
Driver Seat
Rear Seat
60/40 Split Seats
Cargo Space with Seats Backs Down
Position of Luggage Cover
Release Lever
Cargo Area Light with Switch
Spare Tire Area
Navigation Screen Starting Up
Navigation Screen displaying Subaru Logo
Radio without Navigation
Agree Screen
INFO Display Main Screen
SET functions
Tilt/Eject Screen
CD/DVD Drawer
Map DVD Drawer
Showing Sensitivity if Obstructed to close
Audio OFF Screen
Process of Activating Diagnostic Mode
Dealer Diag Menu Screen
Vehicle Signal Info. Screen
Connection Info. Screen
Navi/Audio System
78
6
6
6
6
6
7
7
7
12
12
12
12
12
12
13
13
13
13
13
14
14
14
15
15
15
15
15
15
16
16
16
16
17
17
17
18
18
18
August 2007
Slide Sequence
Slide No.
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
Description
Page No.
Navi/Audio Top
Back of Navi/Audio System
Navi/ Audio Fan
Removing Navi/Audio System
Satellite Radio Receiver
Placement of Satellite Receiver
Antennae Wires Attached to Roof
Antennae Attached to Roof
Satellite / Audio Antennae
Radio Antenna
Window Assembly Top View
Window Assembly Bottom View
Cable Guide
Window Switch Assembly
Removing Inner Trim
Removing Outer Trim
Door Panel
Locking and Latch Cables
Door with Gasket in Place
Removing Window Bolts
Bolts, Assist Tabs and Removal
Lower Window Channel Bolt
Turbo Model Combination Meter
Turbo Model Key ON Engine OFF
Sedan Model (Naturally Aspirated)
Naturally Aspirated Model Combination Meter
HVAC Location
Air Filter
Steering Support and Dash Assembly
Title Slide (Electrical)
Engine Compartment
F-27 Relay Holder (Line Art)
Secondary Air Relay Holder (Line Art)
Inside Main Fuse Box Cover
Engine Wiring Schematic Showing F-9
Fuse Box Next to Hood Release
Relay Block B220 and B225
Inside Fuse Box Cover
Relay Block B220 and B225
B386 Houses the Blower Relay
Location of B220
79
18
19
19
19
19
19
19
20
20
20
20
20
20
21
21
21
21
21
22
22
22
22
23
23
24
24
25
25
25
26
26
26
26
26
27
28
28
28
29
29
29
August 2007
Slide Sequence
Slide No.
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
Description
Page No.
Driver Side Kick Panel
B220 Relay Circuits
B386 Blower Motor Relay Wiring Schematic and B386 Relay Circuit
Title Slide (Body Integrated Unit (BIU)
BIU Location
Title Slide (Multi Joint Connector)
Location of Multi Joint Connector
Releasing Multi Joint Connector
Connector Side of Multi Joint Connector
Front View-Multi Joint Connector
Back Side Cover Removed-Multi Joint Connector
Multi Joint Connector
Multi Joint Connector (Line Art)
Connector Colors
Wiper Deicer Wiring Schematic
Navigation Unit Wiring Schematic
Security System Wiring Schematic
Title Slide (Supplemental Restraint System (SRS)
Satellite Safing Sensor Schematic
Satellite Safing Sensor Location
2008 Airbag Trouble Codes
Airbag Wiring Schematic
Connector Lock Release Tab
White Locking Plate
Title Slide (Evaporative System)
Carpet Location Tabs
Sliding Lock Tabs
WRX Rear of Vehicle with Carpet Removed
Sedan Trunk
Sedan Covers Over Evaporative Canister and Evaporative Hoses
Drain Valve
Quick Connectors
Evaporative System Hose Connection
Hose Connections
Hose A and B
Hose B
Hose B
Hose C and D
Hose C
Hose D
Hose E and F
80
30
31
32
33
33
35
35
35
35
36
36
37
37
37
38
39
40
41
41
41
42
43
43
43
44
44
44
44
44
44
45
45
45
46
47
47
47
48
48
48
49
August 2007
Slide Sequence
Slide No.
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
Description
Page No.
Hose E
Hose F
Hose G and H
Hose G
Hose H
Hose I
Pressure Sensor
Title Slide (Fuel Tank)
Main Fuel Pump
WRX Fuel Pump Control Unit
Fuel Tank
Title Slide (Automatic Transmission)
Differential Gear Ration Chart
Gear Ration Chart
Title Slide ( Manual Transmission Changes/Enhancements)
Manual Transmission Chart
Difference of Detent Balls and Key Springs
Detent Ball in Place
Detent Ball Front / Rear View
1st and 2nd Slider
1st and 2nd Hub
Title Slide (6 Speed Manual Transmission (2008)
Construction
Oil Sump
Front Oil Guides
Previous Oil Pump
Main Case Oil Guides
Main Case Oil Guides Close Up
Extension Housing Oil Guides
Friction Tab
Clip
Bolts
Main Case Oil Guides Bench Shot
Clip
End Plate
Previous Oil Pump Location
Title Slide (5AT Major Modification Points)
5 Speed Automatic Transmission
Artwork
Application Chart
Artwork (showing differences in what is deleted)
81
49
49
50
50
50
51
51
52
52
52
52
53
53
53
57
57
58
58
58
58
58
59
59
59
60
60
60
60
60
61
61
61
61
61
62
62
63
63
64
65
65
August 2007
Slide Sequence
Slide No.
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
200.
Description
Page No.
Hydraulic Control Valve
Mounting Bolts
Transmission Harness
Torque Converter
Differential Case Cut View
Drive Plate
Drive Pinion
ATF Level Gauge
Title Slide (2.5 Liter Air Conditioning Belt)
Air Conditioning Compressor Belt Front View
Air Conditioning Compressor Belt from Under Car
WRX Engine
Sedan Engine
Cutting Off Air Conditioning Compressor Belt
Upper Belt Guide In Position
Lower Belt Guide In Place With Retaining Clip
22mm Socket and Ratchet In Place
Belt Fully Engaged On Crankshaft Pulley
Air Conditioning Compressor Belt Kit
Title Slide (Chassis)
G Sensor
Brake Pedal Off and Brakes Releasing
Engine Under Cover
Under Cover OFF
Front Suspension
Rear Suspension
Muffler
Transverse Mounted Muffler
Wheel With TPMS
Close Up Of TPMS
TPMS Under Canister
TPMS Data
Front Tow Hook
Rear Tow Hook
Front View of the 5 Door Brake Light
Back View 5 Door Brake Light
Copyright
The End
82
66
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67
67
68
68
69
69
70
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70
70
70
71
71
71
71
72
72
73
73
73
74
74
74
74
75
75
75
75
75
76
76
77
77
77
August 2007
NOTES:
83
August 2007
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