1996 SUBARU LEGACY bulb

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)
17
2-4DIAGNOSTICS
1. Engine Lubrication System

2. Automatic Transmission
1. LHD MODEL
B3M0415A

1Button


2Spring


3Grip


4Indicator cover


5“P” position switch


6Indicator light bulb


7Shift-lock solenoid


8Plate


9Packing


10Outer cable


11Nut


12Nut


13Inner cable


14Clip


15Rod


16Selector lever

17Lock plate


18Detention spring


19Pin


20Spacer


21Washer


22Boot


23Spacer


24Snap pin
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 2.0±0.7 (0.2±0.07, 1.4±0.5)
T2: 4.4±1.5 (0.45±0.15, 3.3±1.1)
T3: 12±3 (1.2±0.3, 8.7±2.2)
T4: 18±5 (1.8±0.5, 13.0±3.6)
4
3-3COMPONENT PARTS
2. Automatic Transmission

2. RHD MODEL
B3M0385A

1Grip


2Spring


3Button


4Indicator cover


5“P”position switch


6Indicator light bulb


7Shift-lock solenoid


8Plate


9Packing


10Outer cable


11Nut


12Nut


13Inner cable


14Clip


15Rod

16Selector lever


17Lock plate


18Detention spring


19Pin


20Spacer


21Washer


22Boot


23Spacer


24Snap pin
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 4.4±1.5 (0.45±0.15, 3.3±1.1)
T2: 12±3 (1.2±0.3, 8.7±2.2)
T3: 18±5 (1.8±0.5, 13.0±3.6)
5
3-3COMPONENT PARTS
2. Automatic Transmission

4. Control Unit
1. LHD MODEL
B4M0369A
1Back plate

2Bulb

3Fan switch ASSY

4Illumi. plate

5Switch base

6Control panel

7Fan switch knob

8RECIRC switch
9A/C switch

10Temp. switch knob

11Mode switch

12Temp. lever ASSY

13Base plate

14Control amp.

15Temp. control cable
9
4-6COMPONENT PARTS
4. Control Unit

2. RHD MODEL
B4M0057A
1Back plate

2Bulb

3Fan switch ASSY

4Illumi. plate

5Switch base

6Control panel

7Fan switch knob

8RECIRC switch
9A/C switch

10Temp. switch knob

11Mode switch

12Temp. lever ASSY

13Base plate

14Control amp.

15Temp. control cable
10
4-6COMPONENT PARTS
4. Control Unit

2. Performance Test Diagnosis
If various conditions caused to other air conditioning
system, the characteristics revealed on manifold gauge
reading are shown in the following:
As to the method of a performance test, refer to the item
of“Performance Test”.
Each shaded area on the following tables indicates a read-
ing of the normal system when the temperature of outside
air is 32.5°C (91°F).
Condition Probable cause Corrective action
INSUFFICIENT REFRIGERANT CHARGE
G4M0673
Insufficient cooling Refrigerant is small, or
leaking a little.1. Perform leak test.
2. Repair leak.
3. Charge system.
Evacuate, as
necessary, and
recharge system.
ALMOST NO REFRIGERANT
G4M0674
No cooling action Serious refrigerant leak.Stop compressor
immediately.
1. Perform leak test.
2. Discharge system.
3. Repair leak(s).
4. Replace receiver
drier if necessary.
5. Check oil level.
6. Evacuate and
recharge system.
FAULTY EXPANSION VALVE
G4M0675
Slight cooling;
Sweating or frosted
expansion valve inlet.Expansion valve
restricts refrigerant flow.
Expansion valve is
clogged.
Expansion valve is
inoperative.
Valve stuck closed.
Thermal bulb has lost
charge.If valve inlet reveals
sweat or frost:
1. Discharge system.
2. Remove valve and
clean it. Replace it if
necessary.
3. Evacuate system.
4. Charge system.
If valve does not oper-
ate:
1. Discharge system.
2. Replace valve.
3. Evacuate and charge
system.
42
4-7DIAGNOSTICS
2. Performance Test Diagnosis

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







37
6-1DIAGNOSTICS
2. Generator

B6M0336A
2) Look at the beam angle gauge (vertical movement).
The bubble on the gauge should not deviate from the cen-
ter of the gauge.
B6M0337A
3) Look at the beam angle gauge (horizontal movement).
The center mark (the red line on the inner scale) should not
deviate from the black line on the outer case.
B: REMOVAL AND INSTALLATION
1. HEADLIGHT BULB
1) Disconnect the connector from inside of the engine
compartment.
2) Remove rubber cap.
3) Remove the light bulb retaining spring to remove the
bulb.
4) Replace the bulb with a new one and hook the spring.
5) Attach the rubber cap and connect the connector.
M6A0139
CAUTION:

Since the tungsten halogen bulb operates at high
temperature, dirt and oil on the bulb surface decreases
the bulb’s useful life. When replacing the bulb, hold the
flange portion and do not touch the glass portion.
M6A0140

Attach the rubber cap with letters TOP on the top so
that the drain hole will be on the lower side.

To keep water out, correctly engage the groove por-
tion of the rubber cap.
9
6-2SERVICE PROCEDURE
4. Headlight