wiring SUBARU LEGACY 1995 Service Repair Manual

1. Engine Lubrication System
Before troubleshooting, make sure that the engine oil level
is correct and no oil leakage exists.
Trouble Possible cause Corrective action
1. Warning light remains
on.1) Oil pressure switch
failureCracked diaphragm or oil leakage within switch Replace.
Broken spring or seized contacts Replace.
2) Low oil pressureClogged oil filter Replace.
Malfunction of oil by-pass valve of oil filter Clean or replace.
Malfunction of oil relief valve of oil pump Clean or replace.
Clogged oil passage Clean.
Excessive tip clearance and side clearance of oil
pump rotor and gearReplace.
Clogged oil strainer or broken pipe Clean or replace.
3) No oil pressureInsufficient engine oil Replenish.
Broken pipe of oil strainer Replace.
Stuck oil pump rotor Replace.
2. Warning light does not
go on.1) Burn-out bulb Replace.
2) Poor contact of switch contact points Replace.
3) Disconnection of wiring Repair.
3. Warning light flickers
momentarily.1) Poor contact at terminals Repair.
2) Defective wiring harness Repair.
3) Low oil pressureCheck for the same pos-
sible causes as listed in
1.—2)
16
2-4DIAGNOSTICS
1. Engine Lubrication System

A: OPERATION (WITHOUT A/C MODEL)
CONDITION:
Engine coolant temperature is above 95°C (203°F).
TROUBLE SYMPTOM:
Radiator main fan does not operate under the above
condition.
1. Check fuse and power supply.
OK
Not OK
Melted fuse,repair the shorted part of the circuit
,replace fuse.
2. Check harness connector between fuse and
relay box, and A/C relay holder.
OK
Not OK
Repair or replace wiring harness.
3. Check A/C relay holder.
OK
Not OK
Repair or replace A/C relay holder.
4. Check harness connector between A/C relay
holder and main fan motor.
OK
Not OK
Repair or replace wiring harness.
5. Check ground circuit of main fan motor.
OK
Not OK
Repair or replace wiring harness.
6. Check main fan motor.
OK
Not OK
Replace main fan motor.
Refer to 2-7 On-Board Diagnostics II System.
B2M0427A
1. CHECK FUSE AND POWER SUPPLY.
1) Check fuse No. 13.
2) Turn ignition switch to ACC.
3) Measure voltage between fuse and relay box, and body.
Connector & terminal / Specified voltage:
(F40) No. 3—Body / 10 V, or more






21
2-5DIAGNOSTICS
2. Radiator Main Fan

B: LO MODE OPERATION (WITH A/C MODEL)
CONDITION:
Condition (1) :
Engine coolant temperature is below 89°C (192°F).
A/C switch is turned ON.
Vehicle speed is below 10 km/h (6 MPH).
Condition (2) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned OFF.
Vehicle speed is below 10 km/h (6 MPH).
TROUBLE SYMPTOM:
Radiator main fan does not rotate at LO speed under
conditions (1) and (2) above.
1. Check power supply to main fan relay-1.
OK
Not OK
Melted fuse (in A/C relay holder),repair the
shorted part of the circuit,replace fuse.
2. Check main fan relay-1.
OK
Not OK
Replace main fan relay-1.
3. Check harness connector between main fan
relay-1 and main fan motor.
OK
Not OK
Repair or replace wiring harness.
4. Check ground circuit of main fan motor.
OK
Not OK
Repair or replace wiring harness.
5. Check main fan motor.
OK
Not OK
Replace main fan motor.
Refer to 2-7 On-Board Diagnostics II System.





23
2-5DIAGNOSTICS
2. Radiator Main Fan

C: HI MODE OPERATION (WITH A/C MODEL)
CONDITION:
Condition (1) :
Engine coolant temperature is below 89°C (192°F).
A/C switch is turned ON.
Vehicle speed is over 20 km/h (12 MPH).
Condition (2) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned OFF.
Vehicle speed is over 20 km/h (12 MPH).
Condition (3) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned ON.
TROUBLE SYMPTOM:
Radiator main fan does not rotate at HI speed under
conditions (1), (2) and (3) above.
1. Check operation of main fan motor LO mode.
OK
Not OK
Check LO mode operation.
2. Check power supply to main fan relay-2.
OK
Not OK
Melted fuse (in A/C relay holder),repair the
shorted part of the circuit,replace fuse.
3. Check main fan relay-2.
OK
Not OK
Replace main fan relay-2.
4. Check harness connector between main fan
relay-2 and main fan motor.
OK
Not OK
Repair or replace wiring harness.
5. Check ground circuit of main fan motor.
OK
Not OK
Repair or replace wiring harness.
6. Check main fan motor.
OK
Not OK
Replace main fan motor.
Refer to 2-7 On-Board Diagnostics II System.






26
2-5DIAGNOSTICS
2. Radiator Main Fan

A: LO MODE OPERATION
CONDITION:
Condition (1) :
Engine coolant temperature is below 89°C (192°F).
A/C switch is turned ON.
Vehicle speed is below 10 km/h (6 MPH).
Condition (2) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned OFF.
Vehicle speed is below 10 km/h (6 MPH).
TROUBLE SYMPTOM:
Radiator sub fan does not rotate at LO speed under
conditions (1) and (2) above.
1. Check fuse and power supply.
OK
Not OK
Melted fuse,repair the shorted part of the circuit
,replace fuse.
2. Check harness connector between fuse and
relay box, and sub fan motor.
OK
Not OK
Repair or replace wiring harness.
3. Check ground circuit of sub fan motor.
OK
Not OK
Repair or replace wiring harness.
4. Check sub fan motor.
OK
Not OK
Replace sub fan motor.
Refer to 2-7 On-Board Diagnostics II System.




30
2-5DIAGNOSTICS
3. Radiator Sub Fan (With A/C model only)

B: HI MODE OPERATION
CONDITION:
Condition (1) :
Engine coolant temperature is below 89°C (192°F).
A/C switch is turned ON.
Vehicle speed is over 20 km/h (12 MPH).
Condition (2) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned OFF.
Vehicle speed is over 20 km/h (12 MPH).
Condition (3) :
Engine coolant temperature is above 95°C (203°F).
A/C switch is turned ON.
TROUBLE SYMPTOM:
Radiator sub fan does not rotate at HI speed under con-
ditions (1), (2) and (3) above.
1. Check operation of sub fan motor LO mode.
OK
Not OK
Check LO mode operation.
2. Check power supply to sub fan relay-2.
OK
Not OK
Melted fuse (in A/C relay holder),repair the
shorted part of the circuit,replace fuse.
3. Check sub fan relay-2.
OK
Not OK
Replace sub fan relay-2.
4. Check harness connector between sub fan
relay-2 and sub fan motor.
OK
Not OK
Repair or replace wiring harness.
5. Check ground circuit of sub fan motor.
OK
Not OK
Repair or replace wiring harness.
6. Check sub fan motor.
OK
Not OK
Replace sub fan motor.
Refer to 2-7 On-Board Diagnostics II System.






32
2-5DIAGNOSTICS
3. Radiator Sub Fan (With A/C model only)

1. Supplemental Restraint System
“Airbag”
Airbag system wiring harness is routed near the steering
wheel, steering shaft and column.
WARNING:

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 steering wheel, steering shaft
and column.
2. Tilt Steering Column
B4M0554A
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 24±3 (2.4±0.3, 17.4±2.2)
T2: 25±5 (2.5±0.5, 18.1±3.6)
A: REMOVAL
1) Disconnect battery minus terminal.
2) Lift-up vehicle.
3) Remove airbag module. (with airbag model) 5-5 [W3A1].>
WARNING:
Always refer to“5-5 Supplemental Restraint System”
before performing airbag module service (if so
equipped).
10
4-3SERVICE PROCEDURE
1. Supplemental Restraint System“Airbag”- 2. Tilt Steering Column

1. Supplemental Restraint System
“Airbag”
Airbag system wiring harness is routed near the steering
wheel, steering shaft and column.
WARNING:

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 steering wheel, steering shaft
and column.
2. Tilt Steering Column
B4M0554A
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 24±3 (2.4±0.3, 17.4±2.2)
T2: 25±5 (2.5±0.5, 18.1±3.6)
A: REMOVAL
1) Disconnect battery minus terminal.
2) Lift-up vehicle.
3) Remove airbag module. (with airbag model) 5-5 [W3A1].>
WARNING:
Always refer to“5-5 Supplemental Restraint System”
before performing airbag module service (if so
equipped).
10
4-3SERVICE PROCEDURE
1. Supplemental Restraint System“Airbag”- 2. Tilt Steering Column

G5M0332
4) Remove steering wheel nut, then draw out steering
wheel from shaft using steering puller.
G4M0086
5) Remove universal joint bolts and then remove universal
joint.
CAUTION:
Scribe alignment marks on universal joint so that it can
be reassembled at the original serration.
6) Remove trim panel under instrument panel.
7) Disconnect connectors for ignition switch and combina-
tion switch wiring harness under instrument panel.
B4M0127A
8) Remove the two bolts under instrument panel securing
steering shaft.
9) Pull out steering shaft assembly from hole on toe board.
CAUTION:
Be sure to remove universal joint before removing
steering shaft assembly installing bolts when remov-
ing steering shaft assembly or when lowering it for
servicing of other parts.
B4M0555
B: DISASSEMBLY
Remove the four screws securing upper and lower steer-
ing column covers, and the two screws securing combina-
tion switch, then remove related parts.
NOTE:
Steering column assembly can not to be disassembled.
11
4-3SERVICE PROCEDURE
2. Tilt Steering Column

18. Brake Hose and Pipe
SUPPLEMENTAL RESTRAINT SYSTEM“AIRBAG”
Airbag system wiring harness is routed near the center
brake pipe.
CAUTION:

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 center brake pipe.
A: REMOVAL AND INSTALLATION
CAUTION:

When removing and installing the brake pipe, make
sure that it is not bent.

After installing the brake pipe and hose, bleed the
air.

After installing the brake hose, make sure that it
does not touch the tire or suspension assembly, etc.
1. MODELS WITHOUT ABS
G4M0472
1Union bolt

2Front brake hose RH

3Proportioning valve

4Front brake pipe

5Front adapter pipe (UPPER)

6Front adapter pipe (LOWER)

7Front brake hose LH
8Center brake pipe ASSY

9Connector bracket

10Two-way connector

11Rear brake pipe RH

12Rear brake hose drum

13Rear brake pipe ASSY

14Rear brake pipe LH
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 13±3 (1.3±0.3, 9.4±2.2)
T2: 15
+3
2(1.5+0.3
0.2, 10.8+2.2
1.4)
T3: 18±3 (1.8±0.3, 13.0±2.2)
T4: 18±5 (1.8±0.5, 13.0±3.6)
75
4-4SERVICE PROCEDURE
18. Brake Hose and Pipe