Subaru Impreza 2004 Manuel utilisateur
FUJI HEAVY INDUSTRIES LTD. G1870GE6
2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
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.
HVAC SYSTEM
(HEATER, VENTILATOR AND A/C) AC
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTICS) AC(diag)
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTICS) AB(diag)
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEMS WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOWS/MIRRORS GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEATS SE
SECURITY AND LOCKS SL
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF) SR
EXTERIOR/INTERIOR TRIM EI
EXTERIOR BODY PANELS EB
2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G1870GE6
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTICS) CC(diag)
IMMOBILIZER (DIAGNOSTICS) IM(diag)
LIGHTING SYSTEM
LI
Page
1. General Description ....................................................................................2
2. Headlight and Tail Light System .................................................................3
3. Front Fog Light System...............................................................................4
4. Rear Fog Light System ...............................................................................5
5. Turn Signal and Hazard Light System ........................................................6
6. Back-up Light System .................................................................................7
7. Stop Light System .......................................................................................8
8. Interior Light System ...................................................................................9
9. Headlight Beam Leveler System...............................................................10
10. Combination Switch (Light) .......................................................................11
11. Combination Base Switch Assembly.........................................................13
12. Headlight Assembly ..................................................................................14
13. Headlight Bulb...........................................................................................16
14. Front Turn Signal Light Bulb .....................................................................17
15. Clearance/Parking Light Bulb....................................................................18
16. Front Fog Light Assembly .........................................................................19
17. Front Fog Light Bulb..................................................................................20
18. Rear Combination Light Assembly............................................................21
19. Brake/Tail Light Bulb .................................................................................22
20. Back-up Light Bulb ....................................................................................23
21. Rear Turn Signal Light Bulb ......................................................................24
22. Rear Fog Light Bulb ..................................................................................25
23. License Plate Light....................................................................................26
24. High-mounted Stop Light ..........................................................................27
25. Side Turn Signal Light...............................................................................28
26. Spot Map Light ..........................................................................................29
27. Room Light................................................................................................30
28. Luggage Room Light.................................................................................31
29. Trunk Room Light......................................................................................32
30. Glove Box Light.........................................................................................33
LI-2
LIGHTING SYSTEM
General Description
1. General Description
A: SPECIFICATIONS
B: PRECAUTIONS
•Before disassembling or reassembling parts, always disconnect the battery ground cable. When replacing
radio, control module, and other parts provided with memory functions, record memory contents before dis-
connecting the battery ground cable. Otherwise, the memory will be erased.
•Reassemble in reverse order of disassembly, unless otherwise indicated.
•Adjust parts to the given specifications.
•Connect the connectors securely during reassembly.
•After reassembly, make sure functional parts operate smoothly.
WARNING:
•Airbag system wiring harness is routed near electrical parts and switches. All airbag system wiring
harnesses and connectors are yellow. Do not use electric test equipment on these circuits.
•Be careful not to damage the airbag system wiring harness when servicing electrical parts and
switches.
C: PREPARATION TOOL
1. GENERAL TOOLS
Headlight 12 V —55 W/60 W (Halogen)
Front turn signal light 12 V —21 W
Side turn signal light 12 V —5 W
Clearance/Parking light 12 V —5 W
Front fog light 12 V —55 W
Rear fog light 12 V —21 W
Rear combination light
Sedan Tail light 12 V —5/21 W
Stop light 12 V —21 W
Wagon Tail/Stop light 12 V —5/21 W
Turn signal light 12 V —21 W
Back-up light 12 V —21 W
License plate light 12 V —5 W
High-mounted stop light Sedan Standard type 12 V —21 W
Rear spoiler built-in type 12 V —1.2 W (LED)
Wagon 12 V —10 W
Room light 12 V —8 W
Spot light 12 V —8 W
Luggage room light 12 V —13 W
Trunk room light 12 V —5 W
Glove box light 12 V —1.4 W
TOOL NAME REMARKS
Circuit Tester Used for measuring resistance and voltage.
LI-3
LIGHTING SYSTEM
Headlight and Tail Light System
2. Headlight and Tail Light Sys-
tem
A: WIRING DIAGRAM
1. HEADLIGHT LHD MODEL
<Ref. to WI-213, LHD MODEL, WIRING DIA-
GRAM, Headlight System.>
2. HEADLIGHT RHD MODEL
<Ref. to WI-214, RHD MODEL, WIRING DIA-
GRAM, Headlight System.>
3. CLEARANCE LIGHT AND ILLUMINA-
TION LIGHT LHD MODEL
<Ref. to WI-198, LHD MODEL, WIRING DIA-
GRAM, Clearance Light and Illumination Light Sys-
tem.>
4. CLEARANCE LIGHT AND ILLUMINA-
TION LIGHT RHD WITHOUT ILLUMINATION
CONTROL MODEL
<Ref. to WI-201, RHD WITHOUT ILLUMINATION
CONTROL MODEL, WIRING DIAGRAM, Clear-
ance Light and Illumination Light System.>
5. CLEARANCE LIGHT AND ILLUMINA-
TION LIGHT RHD WITH ILLUMINATION
CONTROL MODEL
<Ref. to WI-204, RHD WITH ILLUMINATION CON-
TROL EXCEPT FOR AUSTRALIA STi MODEL,
WIRING DIAGRAM, Clearance Light and Illumina-
tion Light System.>
6. CLEARANCE LIGHT AND ILLUMINA-
TION LIGHT STi MODEL FOR AUSTRALIA
<Ref. to WI-207, RHD FOR AUSTRALIA STi MOD-
EL, WIRING DIAGRAM, Clearance Light and Illu-
mination Light System.>
B: INSPECTION
1. HEADLIGHT SWITCH
<Ref. to LI-11, INSPECTION, Combination Switch
(Light).>
2. HEADLIGHT RELAY
Measure the headlight relay resistance between
terminals when connecting terminal No. 4 to battery
positive terminal and terminal No. 3 to battery
ground terminal.
3. TAIL AND ILLUMINATION RELAY
Measure the tail and illumination relay resistance
between terminals when connecting terminal No. 4
to battery positive terminal and terminal No. 3 to
battery ground terminal.
Current Terminal No. Standard
Flow 1 and 2 Less than 1 Ω
No flow More than 1 MΩ
Current Terminal No. Standard
Flow 1 and 2 Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2)
(1)
(4)
(2)
(3)
(3) (4)
LI-00001
(1)
(2)
(1)
(4)
(2)
(3)
(3) (4)
LI-4
LIGHTING SYSTEM
Front Fog Light System
3. Front Fog Light System
A: WIRING DIAGRAM
1. FRONT FOG LIGHT LHD MODEL
<Ref. to WI-210, LHD MODEL, WIRING DIA-
GRAM, Front Fog Light System.>
2. FRONT FOG LIGHT RHD FOR EUROPE
MODEL
<Ref. to WI-211, RHD FOR EUROPE MODEL,
WIRING DIAGRAM, Front Fog Light System.>
3. FRONT FOG LIGHT RHD EXCEPT FOR
EUROPE MODEL
<Ref. to WI-212, RHD EXCEPT FOR EUROPE
MODEL, WIRING DIAGRAM, Front Fog Light Sys-
tem.>
B: INSPECTION
1. FRONT FOG LIGHT SWITCH
Measure the front fog light switch resistance.
2. FRONT FOG LIGHT RELAY
Measure the front fog light relay resistance be-
tween terminals when connecting terminal No. 4 to
battery positive terminal and terminal No. 3 to bat-
tery ground terminal.
Switch position Terminal No. Standard
OFF 3 and 5 More than 1 MΩ
ON Less than 1 Ω
LI-00051
Current Terminal No. Standard
Flow 1 and 2 Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2)
(1)
(4)
(2)
(3)
(3) (4)
LI-5
LIGHTING SYSTEM
Rear Fog Light System
4. Rear Fog Light System
A: WIRING DIAGRAM
1. REAR FOG LIGHT LHD MODEL
<Ref. to WI-240, LHD MODEL, WIRING DIA-
GRAM, Rear Fog Light System.>
2. REAR FOG LIGHT RHD MODEL
<Ref. to WI-241, RHD MODEL, WIRING DIA-
GRAM, Rear Fog Light System.>
B: INSPECTION
1. REAR FOG LIGHT SWITCH
1) Turn the ignition switch to ON.
2) Turn on the headlight or front fog light.
3) Push the rear fog light switch and check if the
rear fog light turns on.
2. REAR FOG LIGHT RELAY
Measure the rear fog light relay resistance between
terminals when connecting terminal No. 4 to battery
positive terminal and terminal No. 3 to battery
ground terminal.
Current Terminal No. Standard
Flow 1 and 2 Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2)
(1)
(4)
(2)
(3)
(3) (4)
LI-6
LIGHTING SYSTEM
Turn Signal and Hazard Light System
5. Turn Signal and Hazard Light
System
A: WIRING DIAGRAM
1. TURN SIGNAL LIGHT AND HAZARD
LIGHT LHD MODEL
<Ref. to WI-220, LHD MODEL, WIRING DIA-
GRAM, Turn Signal Light and Hazard Light Sys-
tem.>
2. TURN SIGNAL LIGHT AND HAZARD
LIGHT RHD MODEL
<Ref. to WI-222, RHD MODEL, WIRING DIA-
GRAM, Turn Signal Light and Hazard Light Sys-
tem.>
B: INSPECTION
1. TURN SIGNAL SWITCH
<Ref. to LI-11, INSPECTION, Combination Switch
(Light).>
2. HAZARD SWITCH
Measure the hazard switch resistance.
3. TURN SIGNAL AND HAZARD MODULE
Connect the battery and turn signal light bulb to the
module, as shown in the figure. The module is
properly functioning if it blinks when power is sup-
plied to the circuit.
Switch position Terminal No. Standard
OFF 6 and 7 Less than 1 Ω
ON 1, 3 and 4 Less than 1 Ω
7 and 8 Less than 1 Ω
LI-00002
4321
5678
LI-00003
LI-7
LIGHTING SYSTEM
Back-up Light System
6. Back-up Light System
A: WIRING DIAGRAM
1. BACK-UP LIGHT
<Ref. to WI-197, WIRING DIAGRAM, Back-up
Light System.>
B: INSPECTION
1. BACK-UP LIGHT SWITCH (M/T)
Measure the back-up light switch resistance.
2. INHIBITOR SWITCH (A/T)
Measure the inhibitor switch resistance.
(A) Non-turbo model
(B) Turbo model
Switch position Terminal No. Standard
When shift lever is
set in reverse
position
Turbo model:
2 and 4
Non-turbo model:
1 and 2
Less than 1 Ω
Other positions More than 1 MΩ
LI-00004
(A)
(B)
12
12
34
Switch position Terminal No. Standard
When select lever
is set in “R”range 1 and 2 Less than 1 Ω
Other positions More than 1 MΩ
9
LI-00005
4321
56
78101112
LI-8
LIGHTING SYSTEM
Stop Light System
7. Stop Light System
A: WIRING DIAGRAM
1. STOP LIGHT
<Ref. to WI-219, WIRING DIAGRAM, Stop Light
System.>
B: INSPECTION
1. STOP LIGHT SWITCH
Measure the stop light switch resistance.
(A) Without cruise control
(B) With cruise control
Switch position Terminal No. Standard
When brake pedal
is depressed
1 and 2: Without
cruise control
2 and 3: With
cruise control
Less than 1 Ω
When brake pedal
is released More than 1 MΩ
34
12
12
LI-00064
(A)
(B)
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