SUBARU LEGACY 1997 Service Repair Manual

B6M0574
6) Re-insert the tools disconnected in step 3) into plug
hole, and set them again over the spark plug.
7) Set extension and ratchet in turn onto the connected
tools in plug hole, and tighten spark plug to the specified
torque.
Tightening torque (spark plug):
20.6±2.9 N⋅m (2.10±0.30 kg-m, 15.19±2.14 ft-lb)
CAUTION:
The above torque should be only applied to new spark
plugs without oil on their threads.
In case their threads are lubricated, the torque should
be reduced by approximately 1/3 of the specified
torque in order to avoid over-stressing.
8) The subsequent procedures are in reverse order of #1
spark plug removal. <Ref. to 6-1 [W3E1].>
2. #2 SPARK PLUG
CAUTION:
When installing spark plug, cover the ATF cooling
pipes with a rag to prevent damage.
1) Carry out steps 1), 2), 3), 4), 6) and 7) of #1 spark plug
installation procedure. <Ref. to 6-1 [W3F1].>
2) Proceed in reverse order of #2 spark plug removal.
<Ref. to 6-1 [W3E2].>
3. #3 SPARK PLUG
1) Carry out steps 1) through 7) of #1 spark plug installa-
tion procedure. <Ref. to 6-1 [W3F1].>
2) Proceed in reverse order of #3 spark plug removal.
<Ref. to 6-1 [W3E3].>
4. #4 SPARK PLUG
CAUTION:
When installing spark plug, cover the ATF cooling
pipes with a rag to prevent damage.
1) Carry out steps 1), 2), 3), 4), 6) and 7) of #1 spark plug
installation procedure. <Ref. to 6-1 [W3F1].>
2) Proceed in reverse order of #4 spark plug removal.
<Ref. to 6-1 [W3E4].>
35
6-1SERVICE PROCEDURE
3. Spark Plug

B6M0160
4. Ignition Coil
A: REMOVAL AND INSTALLATION
1. EXCEPT 2200 cc MODEL
1) Disconnect battery ground cable.
2) Disconnect connector from ignition coil.
3) Remove ignition coil.
4) Installation is in the reverse order of removal.
CAUTION:
Be sure to connect wires to their proper positions.
Failure to do so will damage unit.
B6M0772
2. 2200 cc MODEL
1) Disconnect battery ground cable.
2) Disconnect connector from ignition coil.
3) Disconnect spark plug cords from ignition coil.
4) Remove ignition coil.
5) Installation is in the reverse order of removal.
CAUTION:
Be sure to connect wires to their proper positions.
Failure to do so will damage unit.
B6M0774B
B6M0773B
B: INSPECTION
Using accurate tester, inspect the following items, and
replace if defective.
1) Primary resistance
2) Secondary coil resistance
CAUTION:
If the resistance is extremely low, this indicates the
presence of a short-circuit.
Specified resistance:
[Primary side]
Between terminal No. 1 and No. 2
Between terminal No. 2 and No. 3
0.73Ω±10%
[Secondary side]
Between

1and
2
Between
3and
4
12.8 kΩ±15%
3) Insulation between primary terminal and case: 10 MΩ
or more.
36
6-1SERVICE PROCEDURE
4. Ignition Coil

B6M0775
5. Spark Plug Cord
A: INSPECTION
Check for:
1) Damage to cords, deformation, burning or rust forma-
tion of terminals
2) Resistance values of cords
Resistance value:
5.12—12.34 kΩ
G6M0095
6. Ignitor
A: REMOVAL AND INSTALLATION
1) Disconnect battery ground cable.
B6M0161
2) Disconnect connector from ignitor.
3) Remove screws which hold ignitor onto body.
4) Installation is in the reverse order of removal.
37
6-1SERVICE PROCEDURE
5. Spark Plug Cord - 6. Ignitor

B6M0775
5. Spark Plug Cord
A: INSPECTION
Check for:
1) Damage to cords, deformation, burning or rust forma-
tion of terminals
2) Resistance values of cords
Resistance value:
5.12—12.34 kΩ
G6M0095
6. Ignitor
A: REMOVAL AND INSTALLATION
1) Disconnect battery ground cable.
B6M0161
2) Disconnect connector from ignitor.
3) Remove screws which hold ignitor onto body.
4) Installation is in the reverse order of removal.
37
6-1SERVICE PROCEDURE
5. Spark Plug Cord - 6. Ignitor

1. Starter
Trouble Probable cause
Starter does not start.Magnet switch does not operate.
(no clicks are heard.)Magnet switch poor contact or discontinuity
of pull-in coil circuit
Improper sliding of magnet switch plunger
Magnet switch operates.
(clicks are issued.)Poor contact of magnet switch’s main con-
tact point
Layer short of armature
Contaminants on armature commutator
High armature mica
Improper grounding of yoke field coil
Insufficient carbon brush length
Insufficient brush spring pressure
Starter starts but does not crank engine.Failure of pinion gear to engage ring gearWorn pinion teeth
Improper sliding of overrunning clutch
Improper adjustment of stud bolt
Clutch slippage Faulty clutch roller spring
Starter starts but engine cranks too slowly.Poor contact of magnet switch’s main con-
tact point
Layer short of armature
Discontinuity, burning or wear of armature
commutator
Poor grounding of yoke field coil
Insufficient brush length
Insufficient brush spring pressure
Abnormal brush wear
Starter overruns.Magnet switch coil is a layer short.
38
6-1DIAGNOSTICS
1. Starter

2. Generator
Turn ignition switch ON
(engine OFF).
Check if charge bulb
comes on.
YES
NO
Disconnect generator
body harness
connector.
Turn ignition switch to
“START.”(engine starts.)Check if charge bulb
comes on when terminal
(L) of body harness
connector is grounded.
YES
NO
Replace charge bulb.
Check IC regulator.
Check positive terminal
of diode.
Check if charge bulb is
OFF while engine idles.
NO
YES (Remains ON or blinks.)
Check or replace fan belt.
Check generator.
Check S or BAT terminal for improper
contact.
Measure VB* of battery
while running engine at
1,500 rpm.15.5 V is less than VB.
Replace IC regulator
assembly.
VB is less
than 12.5 V.12.5 V is less than or equal to VB, and
VB is less than or equal to 15.5 V.
Check IC regulator as a
single unit.
Turn light switch ON
while engine idles.Check if charge bulb
comes on.
YES
NO
No problems
Check diode assembly.
*: Terminal voltage







39
6-1DIAGNOSTICS
2. Generator

1. Body Electrical
A: SPECIFICATIONS
BatteryReserve capacity 82 minutes (MT), 100 minutes (AT)
Cold cranking ampere 430 amperes (MT), 490 amperes (AT)
Fuse10 A, 15 A, 20 A
Combination
meterSpeedometer 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—1.4 W
Brake fluid level warning/parking brake indicator light 12 V—1.4 W
AT oil temperature warning light (AWD only) 12 V—1.4 W
ABS warning light 12 V—1.4 W
CHECK ENGINE warning light
(Malfunction indicator lamp)12 V—1.4 W
Oil pressure warning light 12 V—1.4 W
AIRBAG system warning light 12 V—1.4 W
Low fuel warning light 12 V—3W
FWD indicator light 12 V—1.4 W
TCS warning light 12 V—1.4 W
TCS indicator light 12 V—1.4 W
Turn signal indicator light 12 V—1.4 W (2 pieces)
Seat belt warning light 12 V—1.4 W
Door open warning light 12 V—1.4 W (5 pieces)
Headlight beam indicator light 12 V—1.4 W
Meter illumination light12 V—3 W (2 pieces)
12 V—3.4 W (4 pieces)
Headlight 12 V—60/55 W (Halogen)
Front clearance light 12 V—5W
Turn signal lightFront 12 V—21 W
Rear 12 V—21 W
Tail/Stop light 12 V—5/21 W
Back-up light 12 V—21 W
High-mount stop light12 V—18 W (SEDAN), 12 V—13 W
(WAGON)
License plate light 12 V—5W
Room light 12 V—8W
Trunk room light (SEDAN) 12 V—5W
Luggage room light (WAGON) 12 V—5W
Spot light 12 V—8 W (2 pieces)
Glove box light 12 V—3.4 W
Ash tray illumination light 12 V—1.7 W
Selector lever illumination light (AT model) 12 V—1.7 W
2
6-2SPECIFICATIONS
1. Body Electrical

Front wiper
motorInput 12 V—54 W or less
Rear wiper motor Input 12 V—42 W or less
Front washer
motorPump type Centrifugal
Input 12 V—36 W or less
Rear washer
motorPump type Centrifugal
Input 12 V—36 W or less
Horn12 V—350 Hz
Cigarette lighter Input 12 V—120 W
Rear window
defoggerInput 12 V—160 W
Indicator light 12 V—50 mA
3
6-2SPECIFICATIONS
1. Body Electrical

1. Precaution

Before disassembling or reassembling parts, always
disconnect battery ground cable. When repairing
radio, control modules, etc. which are provided with
memory functions, record memory contents before
disconnecting battery ground cable. Otherwise, these
contents are cancelled upon disconnection.

Reassemble parts in reverse order of disassembly
procedure unless otherwise indicated.

Adjust parts to specifications contained in this
manual if so designated.

Connect connectors and hoses securely during
reassembly.

After reassembly, ensure functional parts operate
smoothly.
CAUTION:

Airbag system wiring harness is routed near the
electrical parts and switch.

All Airbag system wiring harness and connectors
are colored yellow. Do not use electrical test equip-
ment on these circuit.

Be careful not to damage Airbag system wiring har-
ness when servicing the ignition key cylinder.
G6M0102
2. Battery
A: REMOVAL AND INSTALLATION
1. BATTERY
1) Disconnect the positive (+) terminal after disconnecting
the negative () terminal of battery.
2) Remove flange nuts from battery rods and take off bat-
tery holder.
3) Remove battery.
Tightening torque:
3.4±1.0 N⋅m (0.35±0.1 kg-m, 2.5±0.7 ft-lb)
NOTE:

Clean battery cable terminals and apply grease to retard
the formation of corrosion.

Connect the positive (+) terminal of battery and then the
negative () terminal of the battery.
4
6-2SERVICE PROCEDURE
1. Precaution - 2. Battery

1. Precaution

Before disassembling or reassembling parts, always
disconnect battery ground cable. When repairing
radio, control modules, etc. which are provided with
memory functions, record memory contents before
disconnecting battery ground cable. Otherwise, these
contents are cancelled upon disconnection.

Reassemble parts in reverse order of disassembly
procedure unless otherwise indicated.

Adjust parts to specifications contained in this
manual if so designated.

Connect connectors and hoses securely during
reassembly.

After reassembly, ensure functional parts operate
smoothly.
CAUTION:

Airbag system wiring harness is routed near the
electrical parts and switch.

All Airbag system wiring harness and connectors
are colored yellow. Do not use electrical test equip-
ment on these circuit.

Be careful not to damage Airbag system wiring har-
ness when servicing the ignition key cylinder.
G6M0102
2. Battery
A: REMOVAL AND INSTALLATION
1. BATTERY
1) Disconnect the positive (+) terminal after disconnecting
the negative () terminal of battery.
2) Remove flange nuts from battery rods and take off bat-
tery holder.
3) Remove battery.
Tightening torque:
3.4±1.0 N⋅m (0.35±0.1 kg-m, 2.5±0.7 ft-lb)
NOTE:

Clean battery cable terminals and apply grease to retard
the formation of corrosion.

Connect the positive (+) terminal of battery and then the
negative () terminal of the battery.
4
6-2SERVICE PROCEDURE
1. Precaution - 2. Battery