Subaru Impreza 2004 User manual

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

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)

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

LI-00005

4321

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

LI-00064

(A)

(B)

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