check engine SUBARU LEGACY 1999 Service Manual PDF

1. Body Electrical
Battery Reserve capacity 82 minutes (MT), 100 minutes (AT)
Cold cranking ampere 430 amperes (MT), 490 amperes (AT)
Fuse10 A, 15 A, 20 A
Combination meter Speedometer Electric pulse type
Tachometer Electric impulse type
Water temperature gauge Thermistor cross coil type
Fuel gauge Resistance cross coil type
Charge indicator light 12 V Ð 1.4 W
Brake fluid level warning/parking brake indicator light 12 V Ð 1.4 W
AT oil temperature warning light (AWD only) 12 V Ð 1.4 W
ABS warning light 12 V Ð 1.4 W
CHECK ENGINE warning light
(Malfunction indicator lamp)12 V Ð 1.4 W
Oil pressure warning light 12 V Ð 1.4 W
AIRBAG system warning light 12 V Ð 1.4 W
Low fuel warning light 12VÐ3W
FWD indicator light 12 V Ð 1.4 W
Turn signal indicator light 12 V Ð 1.4 W (2 pieces)
Seat belt warning light 12 V Ð 1.4 W
Door open warning light 12 V Ð 1.4 W (5 pieces)
Headlight beam indicator light 12 V Ð 1.4 W
Meter illumination light12VÐ3W(2pieces)
12 V Ð 3.4 W (4 pieces)
Headlight12 V Ð 60/55 W (Halogen)
Front clearance light 12VÐ5W
Turn signal light Front 12VÐ21W
Rear 12VÐ21W
Tail/Stop light12 V Ð 5/21 W
Back-up light12VÐ21W
High-mount stop light 12VÐ18W(SEDAN),
12VÐ13W(WAGON)
License plate light 12VÐ5W
Room light12VÐ8W
Trunk room light (SEDAN) 12VÐ5W
Luggage room light (WAGON) 12VÐ13W
Spot light12VÐ8W(2pieces)
Glove box light 12 V Ð 3.4 W
Selector lever illumination light (AT model) 12 V Ð 1.7 W
Front wiper motor Input 12VÐ54Worless
Rear wiper motor Input 12VÐ42Worless
Front washer motor Pump type Centrifugal
Input 12VÐ36Worless
Rear washer motor Pump type Centrifugal
Input 12VÐ36Worless
Horn12 V Ð 350 Hz
Accessory socket Input 12 V Ð 120 W
Rear window defogger Input 12 V Ð 160 W
Indicator light 12VÐ50mA
Wiper deicer Input 12VÐ88W
Indicator light 12VÐ50mA
2
6-2[S100]SPECIFICATIONS AND SERVICE DATA
1. Body Electrical

4. Headlight
A: ADJUSTMENT
1. HEADLIGHT AIMING
Adjust the headlight aiming by turning the adjust-
ing screws.
CAUTION:
Before checking the headlight aiming, be sure
of the following:
ITurn off the light before adjusting headlight
aiming. If the light is necessary to check
aiming, do not turn on for more than two min-
utes.
IThe area around the headlight has not sus-
tained any accident, damage or other type of
deformation.
IVehicle is parked on level ground.
IThe inflation pressure of tires is correct.
IVehicle's gas tank is fully charged.
IBounce the vehicle several times to normal-
ize the suspension.
IMake certain that someone is seated in the
driver's seat.
NOTE:
Adjust vertical aim first, then horizontal aim.
B6M0859A
B: REMOVAL AND INSTALLATION
1. HEADLIGHT BULB
1) Disconnect the connector from inside of the
engine compartment.2) Remove the light bulb retaining spring and then
remove the bulb.
B6M0860
3) Replace the bulb with a new one and hook the
spring.
4) Connect the connector.
CAUTION:
Since the tungsten halogen bulb operates at
high temperature, dirt and oil on the bulb sur-
face decreases the bulb's useful life. When
replacing the bulb, hold the flange portion and
do not touch the glass portion.
M6A0139
5) Installation is in the reverse order of removal.
2. HEADLIGHT
1) Remove front grille and disconnect connectors
from headlight.
2) Remove screws which secure front turn signal
light.
3) Remove front turn signal light while disconnect-
ing connector.
NOTE:
When installing the front turn signal light, securely
fit clip into locating.
6
6-2[W4A1]SERVICE PROCEDURE
4. Headlight

7. Turn Signal and Hazard
Warning Light
A: REMOVAL AND INSTALLATION
1. FRONT TURN SIGNAL LIGHT
Remove and install front turn signal light. 6-2 [W4B2].>
NOTE:
The front turn signal light is united with headlight
assembly.
2. REAR COMBINATION LIGHT
Remove and install rear combination light. 6-2 [W6A1].>
3. COMBINATION SWITCH
Remove and install combination switch. 6-2 [W4B3].>
4. HAZARD SWITCH
1) Remove center panel from instrument panel.

2) Disconnect connector of hazard switch from
body harness.
3) Remove hazard switch from center panel.
B6M0063
4) Installation is in the reverse order of removal.
5. TURN SIGNAL AND HAZARD UNIT
1) Remove instrument panel lower cover.
2) Remove engine hood opener lever bracket.
3) Disconnect connector of turn signal and hazard
unit.4) Remove screw, and then remove turn signal
and hazard unit from bracket.
B6M0343A
5) Installation is in the reverse order of removal.
B: DISASSEMBLY AND ASSEMBLY
1. COMBINATION SWITCH
Disassemble and assemble combination switch.

C: INSPECTION
1. COMBINATION SWITCH (ON-CAR)
1) Remove instrument panel lower cover.
2) Remove lower column cover.
3) Unfasten holddown clip which secures harness,
and disconnect connectors from body harness.
4) Move combination switch to respective posi-
tions and check continuity between terminals.
B6M0702
14
6-2[W7A1]SERVICE PROCEDURE
7. Turn Signal and Hazard Warning Light

13. Rear Window Defogger
A: REMOVAL AND INSTALLATION
1. DEFOGGER SWITCH
1) Remove screws which secure meter visor.
2) Remove meter visor from instrument panel
while disconnecting connectors.
3) Remove rear window defogger switch from
meter visor.
4) Installation is in the reverse order of removal.
B: INSPECTION
1. DEFOGGER SWITCH
Move rear window defogger switch to each posi-
tion and check continuity between terminals.
B6M0851A
2. DEFOGGER RELAY
Check continuity between terminals as indicated in
table below, when connecting the battery to termi-
nal No. 1 and No. 3.
When current flows. Between termi-
nals No. 2 and
No. 4Continuity
exists.
When current does not
flow.Between termi-
nals No. 2 and
No. 4Continuity does
not exist.
Between termi-
nals No. 1 and
No. 3Continuity
exists.
G6M0112
3. HEAT WIRES
1) Start the engine so that battery is being
charged.
2) Turn defogger switch to ON.
3) Check each heat wire at its center position for
discontinuity by setting direct current voltmeter.
Normal indication is about 6 volts.
G6M0135
25
[W13B3]6-2SERVICE PROCEDURE
13. Rear Window Defogger

B: BULB REPLACEMENT
B6M0761C
(1) Tachometer and temperature
gauge illumination
(2) Oil pressure
(3) CHECK ENGINE (Malfunction
Indicator Light)
(4) Tachometer illumination
(5) Turn signal (RH)
(6) Headlight beam(7) Door open (Front-Right)
(8) Seat belt
(9) Door open (Front-Left)
(10) Door open (Rear-Right)
(11) Door open (Rear-Left)
(12) Rear gate open (Wagon)
(13) Turn signal (LH)
(14) Speedometer illumination(15) Speedometer and fuel gauge
illumination
(16) Low fuel
(17) Charge
(18) Brake fluid level/parking brake
(19) FWD
(20) AT oil temperature
(21) ABS
28
6-2[W14B0]SERVICE PROCEDURE
14. Combination Meter

16. Horn and Cigarette Lighter
A: REMOVAL AND INSTALLATION
1. HORN
1) Open the engine hood.
2) Disconnect connector of horn.
3) Remove the horn.
4) Installation is in the reverse order of removal.
Tightening torque:
18
±5 N´m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
CAUTION:
After installing horn, connect connector, fit
firmly wiring harness to prevent from discon-
necting due to vibration.
B6M0349
2. HORN SWITCH (HORN PAD)
1) Remove screw which secures horn switch
(steering pad) to the base of steering wheel.
B6M0124
2) Remove horn switch (steering pad) from steer-
ing wheel while disconnecting connector.
3) Installation is in the reverse order of removal.
3. CIGARETTE LIGHTER
1) Remove center panel from instrument panel.

2) Disconnect connector from cigarette lighter.
3) Turn illumination socket 45É counterclockwise
and remove it.4) Loosen nut, and then remove cigarette lighter
body.
B6M0350A
5) Installation is in the reverse order of removal.
CAUTION:
IAlign socket with cutout portion of instru-
ment panel during installation.
IIn case of replacing cigarette lighter, use
genuine part only and always replace both plug
and socket combination.
B: INSPECTION
1. HORN SWITCH
Ensure that horn switch is free from the following
defects:
(1) Burned or shorted contacts
(2) Broken or weak spring
(3) Damaged harness
(4) Worn or corroded mating surface of horn plate
2. HORN RELAY
Check continuity between terminals as indicated in
table, when connecting the battery to terminals No.
1 and No. 2.
When current flows. Between termi-
nals No. 2 and
No. 3Continuity
exists.
When current does not
flow.Between termi-
nals No. 2 and
No. 3Continuity does
not exist.
Between termi-
nals No. 1 and
No. 2Continuity
exists.
B6M0126A
30
6-2[W16A1]SERVICE PROCEDURE
16. Horn and Cigarette Lighter

IEach connector number shown in the wiring dia-
gram corresponds to that in the wiring harness.
The location of each connector in the actual
vehicle is determined by reading the first character
of the connector (for example, a ªFº for F8, ªiº for
i16, etc.) and the type of wiring harness.
The first character of each connector number
refers to the area or system of the vehicle.
Symbol Wiring harness and Cord
F Front wiring harness
B Bulkhead wiring harness
E Engine wiring harness
T Transmission cord
DDoor cord LH & RH, Rear
gate cord
IInstrument panel wiring har-
ness
RRear wiring harness, Rear
defogger cord
Room light cord,
Fuel tank cord,
Sunroof cord,
Trunk lid cord
P Floor wiring harness
G6M0205
2. Basic Diagnostics
Procedures
A: BASIC PROCEDURE
1. GENERAL
The most important purpose of diagnostics is to
determine which part is malfunctioning quickly, to
save time and labor.
2. IDENTIFICATION OF TROUBLE
SYMPTOM
Determine what the problem is based on the symp-
tom.
3. PROBABLE CAUSE OF TROUBLE
Look at the wiring diagram and check the system's
circuit. Then check the switch, relay, fuse, ground,
etc.
4. LOCATION AND REPAIR OF TROUBLE
1) Using the diagnostics narrow down the causes.
2) If necessary, use a voltmeter, ohmmeter, etc.
3) Before replacing certain component parts
(switch, relay, etc.), check the power supply,
ground, for open wiring harness, poor connectors,
etc. If no problems are encountered, check the
component parts.
5. CONFIRMATION OF SYSTEM
OPERATION
After repairing, ensure that the system operates
properly.
B: INSPECTION
1. VOLTAGE MEASUREMENT
1) Using a voltmeter, connect the negative lead to
a good ground point or negative battery terminal
and the positive lead to the connector or compo-
nent terminal.
2) Contact the positive probe of the voltmeter on
connector (A).
The voltmeter will indicate a voltage.
6
6-3[D2A1]WIRING DIAGRAM
2. Basic Diagnostics Procedures

IEach connector number shown in the wiring dia-
gram corresponds to that in the wiring harness.
The location of each connector in the actual
vehicle is determined by reading the first character
of the connector (for example, a ªFº for F8, ªiº for
i16, etc.) and the type of wiring harness.
The first character of each connector number
refers to the area or system of the vehicle.
Symbol Wiring harness and Cord
F Front wiring harness
B Bulkhead wiring harness
E Engine wiring harness
T Transmission cord
DDoor cord LH & RH, Rear
gate cord
IInstrument panel wiring har-
ness
RRear wiring harness, Rear
defogger cord
Room light cord,
Fuel tank cord,
Sunroof cord,
Trunk lid cord
P Floor wiring harness
G6M0205
2. Basic Diagnostics
Procedures
A: BASIC PROCEDURE
1. GENERAL
The most important purpose of diagnostics is to
determine which part is malfunctioning quickly, to
save time and labor.
2. IDENTIFICATION OF TROUBLE
SYMPTOM
Determine what the problem is based on the symp-
tom.
3. PROBABLE CAUSE OF TROUBLE
Look at the wiring diagram and check the system's
circuit. Then check the switch, relay, fuse, ground,
etc.
4. LOCATION AND REPAIR OF TROUBLE
1) Using the diagnostics narrow down the causes.
2) If necessary, use a voltmeter, ohmmeter, etc.
3) Before replacing certain component parts
(switch, relay, etc.), check the power supply,
ground, for open wiring harness, poor connectors,
etc. If no problems are encountered, check the
component parts.
5. CONFIRMATION OF SYSTEM
OPERATION
After repairing, ensure that the system operates
properly.
B: INSPECTION
1. VOLTAGE MEASUREMENT
1) Using a voltmeter, connect the negative lead to
a good ground point or negative battery terminal
and the positive lead to the connector or compo-
nent terminal.
2) Contact the positive probe of the voltmeter on
connector (A).
The voltmeter will indicate a voltage.
6
6-3[D2A1]WIRING DIAGRAM
2. Basic Diagnostics Procedures

4. HOW TO DETERMINE A
SHORT-CIRCUIT
1) Test lamp method:
Connect a test lamp (rated at approximately 3
watts) in place of the blown fuse and allow current
to flow through the circuit. Disconnect one connec-
tor at a time from the circuit, starting with the one
located farthest from the power supply. If the test
lamp goes out when a connector is disconnected,
the wiring between that connection and the next
connector (farther from the power supply) is
shorted.
G6M0210
2) Ohmmeter method:
Disconnect all affected connectors, and check con-
tinuity between each connector and ground. When
ohmmeter indicates continuity between a particular
connector and ground, that connector is shorted.
G6M0211
3. Working Precautions
A: PRECAUTIONS WHEN WORKING
WITH THE PARTS MOUNTED ON
THE VEHICLE
1) When working under a vehicle which is jacked-
up, always be sure to use safety stands.
2) The parking brake must always be applied dur-
ing working. Also, in automatic transmission
vehicles, keep the select lever set to the P (Park-
ing) range.
3) Be sure the workshop is properly ventilated
when running the engine. Further, be careful not to
touch the belt or fan while the engine is operating.
4) Be careful not to touch hot metal parts, espe-
cially the radiator and exhaust system immediately
after the engine has been shut off.
B: PRECAUTIONS IN TROUBLE
DIAGNOSIS AND REPAIR OF
ELECTRIC PARTS
1) The battery cable must be disconnected from
the battery's (þ) terminal, and the ignition switch
must be set to the OFF position, unless otherwise
required by the diagnostics.
2) Securely fasten the wiring harness with clamps
and slips so that the harness does not interfere
with the body end parts or edges and bolts or
screws.
3) When installing parts, be careful not to catch
them on the wiring harness.
4) When disconnecting a connector, do not pull
the wires, but pull while holding the connector
body.
G6M0212
8
6-3[D2B4]WIRING DIAGRAM
3. Working Precautions

4. HOW TO DETERMINE A
SHORT-CIRCUIT
1) Test lamp method:
Connect a test lamp (rated at approximately 3
watts) in place of the blown fuse and allow current
to flow through the circuit. Disconnect one connec-
tor at a time from the circuit, starting with the one
located farthest from the power supply. If the test
lamp goes out when a connector is disconnected,
the wiring between that connection and the next
connector (farther from the power supply) is
shorted.
G6M0210
2) Ohmmeter method:
Disconnect all affected connectors, and check con-
tinuity between each connector and ground. When
ohmmeter indicates continuity between a particular
connector and ground, that connector is shorted.
G6M0211
3. Working Precautions
A: PRECAUTIONS WHEN WORKING
WITH THE PARTS MOUNTED ON
THE VEHICLE
1) When working under a vehicle which is jacked-
up, always be sure to use safety stands.
2) The parking brake must always be applied dur-
ing working. Also, in automatic transmission
vehicles, keep the select lever set to the P (Park-
ing) range.
3) Be sure the workshop is properly ventilated
when running the engine. Further, be careful not to
touch the belt or fan while the engine is operating.
4) Be careful not to touch hot metal parts, espe-
cially the radiator and exhaust system immediately
after the engine has been shut off.
B: PRECAUTIONS IN TROUBLE
DIAGNOSIS AND REPAIR OF
ELECTRIC PARTS
1) The battery cable must be disconnected from
the battery's (þ) terminal, and the ignition switch
must be set to the OFF position, unless otherwise
required by the diagnostics.
2) Securely fasten the wiring harness with clamps
and slips so that the harness does not interfere
with the body end parts or edges and bolts or
screws.
3) When installing parts, be careful not to catch
them on the wiring harness.
4) When disconnecting a connector, do not pull
the wires, but pull while holding the connector
body.
G6M0212
8
6-3[D2B4]WIRING DIAGRAM
3. Working Precautions