SUBARU LEGACY 1999 Service Repair Manual

5) Disconnect connector from idle air control sole-
noid valve.
S2M0099
6) Disconnect PCV hose (A) and pressure regula-
tor vacuum hose (B).
H2M2440A
7) Disconnect air by-pass hose from idle air con-
trol solenoid valve.
S2M0100
8) Remove bolts which install idle air control sole-
noid valve to throttle body.
B2M0166
9) Disconnect engine coolant hoses from idle air
control solenoid valve, and take them off.
S2M0101
10) Installation is in the reverse order of removal.
CAUTION:
Replace gasket with a new one.
Tightening torque:
6.4
±0.5 N´m (0.65±0.05 kg-m, 4.7±0.4 ft-lb)
B2M0166
B: CLEANING (2500 cc MODEL
ONLY)
1) Start and warm-up the engine until radiator fan
operates.
2) Hold throttle valve to keep the engine speed at
2,000 rpm.
B2M0357
77
[W12B0]2-7SERVICE PROCEDURE
12. Idle Air Control Solenoid Valve

3) Disconnect air by-pass hose from air intake
duct.
S2M0102A
4) Slowly pour one can (16 oz) of cleaner into by-
pass air hole.
Cleaner:
Part No. 1050002 GM Top Engine Cleaner
Part No. X66-A AC Delco Carburetor
Tune-up Conditioner
S2M0103
5) Leave the engine running for five minutes.
NOTE:
Let white smoke come out from muffler until the
cleaner is used up.
6) Stop the engine.
7) Release the throttle valve.
8) Connect air by-pass hose to air intake duct.
S2M0102A
9) Check duty ratio of idle air control solenoid
valve using Subaru Select Monitor.
NOTE:
For detailed operation procedures, refer to the
Subaru Select Monitor Operation Manual.(1) Insert the cartridge to Subaru Select Moni-
tor.
ST 24082AA090 CARTRIDGE
S2M0286A
(2) Connect Subaru Select Monitor to the data
link connector.
(3) Turn ignition switch to ON, and Subaru
Select Monitor switch to ON.
(4) Select {2. Each System Check} in Main
Menu.
(5) Select {EGI/EMPI} in Selection Menu.
(6) Select {1. Current Data Display & Save} in
EGI/EMPI Diagnosis.
(7) Select {1.12 Data Display} in Data Display
Menu.
(8) Adjust throttle position sensor to the proper
position to match with the following specifica-
tion.
ISC valve duty ratio: 25 Ð 40%
S2M0098
78
2-7[W12B0]SERVICE PROCEDURE
12. Idle Air Control Solenoid Valve

13. Pressure Sources
Switching Solenoid Valve (AT
model)
A: REMOVAL AND INSTALLATION
1) Disconnect connector from pressure sources
switching solenoid valve.
2) Disconnect hoses from pressure sources
switching solenoid valve.
3) Remove pressure sources switching solenoid
valve from bracket.
4) Installation is in the reverse order of removal.
Tightening torque:
6.4
±0.5 N´m (0.65±0.05 kg-m, 4.7±0.4 ft-lb)
B2M0777
14. Fuel Injector
A: REMOVAL AND INSTALLATION
1. RH SIDE OF 2200 cc MODEL
1) Release fuel pressure.

2) Open fuel flap lid, and remove fuel filler cap.
B2M1746
3) Disconnect battery ground cable.
B2M1723
4) Remove component parts of air intake system
on California spec. vehicles.
(1) Remove air intake duct (A) and (B) as a
unit.
B2M2012
79
[W14A1]2-7SERVICE PROCEDURE
14. Fuel Injector

13. Pressure Sources
Switching Solenoid Valve (AT
model)
A: REMOVAL AND INSTALLATION
1) Disconnect connector from pressure sources
switching solenoid valve.
2) Disconnect hoses from pressure sources
switching solenoid valve.
3) Remove pressure sources switching solenoid
valve from bracket.
4) Installation is in the reverse order of removal.
Tightening torque:
6.4
±0.5 N´m (0.65±0.05 kg-m, 4.7±0.4 ft-lb)
B2M0777
14. Fuel Injector
A: REMOVAL AND INSTALLATION
1. RH SIDE OF 2200 cc MODEL
1) Release fuel pressure.

2) Open fuel flap lid, and remove fuel filler cap.
B2M1746
3) Disconnect battery ground cable.
B2M1723
4) Remove component parts of air intake system
on California spec. vehicles.
(1) Remove air intake duct (A) and (B) as a
unit.
B2M2012
79
[W14A1]2-7SERVICE PROCEDURE
14. Fuel Injector

(2) Remove resonator chamber.
B2M2306
5) Remove component parts of air intake system.
(Except California spec. vehicles)
(1) Disconnect connector from mass air flow
sensor.
B2M2018
(2) Remove air intake duct and air cleaner
upper cover as a unit, and remove air cleaner
element.
B2M2020
6) Remove spark plug cords from spark plugs (#1
and #3 cylinders).
B2M2014
7) Remove power steering pump from bracket.
(1) Remove V-belt covers.
B2M2307
(2) Loosen lock bolt and slider bolt, and remove
power steering pump drive V-belt.
B2M2308
(3) Remove bolts which secure power steering
pipe brackets to intake manifold.
B2M2309
(4) Remove bolts which install power steering
pump to bracket.
B2M2310
80
2-7[W14A1]SERVICE PROCEDURE
14. Fuel Injector

(5) Remove bolt which installs power steering
stiffener onto cylinder block.
B2M2325
(6) Place power steering pump on the right side
wheel apron.
B2M2311
8) Remove fuel pipe protector RH. (RHD model
only)
B2M2755
9) Remove band which holds engine harness to
fuel injector pipe.
B2M2762
10) Disconnect connector from fuel injector.
B2M2365
11) Remove bolts which install injector pipe to
intake manifold.
B2M2366
12) Pull up injector pipe, and remove fuel injector
from intake manifold.
B2M2367
81
[W14A1]2-7SERVICE PROCEDURE
14. Fuel Injector

13) Installation is in the reverse order of removal.
CAUTION:
Replace O-rings with new ones.
Tightening torque:
3.4
±0.5 N´m (0.35±0.05 kg-m, 2.5±0.4 ft-lb)
B2M2366
2. LH SIDE OF 2200 cc MODEL
1) Release fuel pressure.
2) Open fuel flap lid, and remove fuel filler cap.
B2M1746
3) Disconnect battery ground cable.
B2M1723
4) Disconnect connector from front window
washer motor.
5) Disconnect connector from rear gate glass
washer motor. (Wagon only)
S2M0546
6) Disconnect rear window glass washer hose
from washer motor, then plug connection with a
suitable cap.
7) Remove two bolts which install washer tank on
body.
B2M2764
8) Move washer tank, and secure it away from
working area.
B2M2023
82
2-7[W14A2]SERVICE PROCEDURE
14. Fuel Injector

9) Remove spark plug cords from spark plugs (#1
and #3 cylinders).
B2M2024
10) Remove fuel pipe protector LH. (LHD model
only)
B2M2754
11) Remove band which holds engine harness to
fuel injector pipe.
B2M2765
12) Disconnect connector from fuel injector.
B2M2766
13) Remove bolts which install injector pipe to
intake manifold.
B2M2767
14) Pull up injector pipe, and remove fuel injector
from intake manifold.
B2M2768
15) Installation is in the reverse order of removal.
CAUTION:
Replace O-rings with new ones.
Tightening torque:
3.4
±0.5 N´m (0.35±0.05 kg-m, 2.5±0.4 ft-lb)
B2M2767
3. 2500 cc MODEL
1) Release fuel pressure.

83
[W14A3]2-7SERVICE PROCEDURE
14. Fuel Injector

2) Open fuel flap lid, and remove fuel filler cap.
B2M1746
3) Disconnect battery ground cable.
B2M1723
4) Disconnect connector from fuel injector.
G2M0398
5) Remove fuel injector from fuel pipe assembly.
G2M0431
6) Installation is in the reverse order of removal.
CAUTION:
Replace O-rings and insulator.
Tightening torque:
T: 3.4
±0.5 N´m (0.35±0.05 kg-m, 2.5±0.4
ft-lb)
B2M0169C
(A) O-ring B
(B) O-ring A
(C) Fuel injector
(D) Insulator
(E) Fuel injector cup
H: Replacement part
84
2-7[W14A3]SERVICE PROCEDURE
14. Fuel Injector

15. Engine Control Module
A: REMOVAL AND INSTALLATION
1. 2200 cc MODEL
1) Disconnect battery ground cable.
B2M1723
2) Remove side sill front cover.

B2M0672A
3) Detach floor mat of front passenger seat.
B2M0673A
4) Remove protect cover.
B2M0674
5) Remove nuts which hold ECM to bracket.
B2M2368
6) Remove clip from bracket.
B2M2369A
7) Disconnect ECM connectors.
B2M2370
8) Take out ECM.
B2M2371A
9) Installation is in the reverse order of removal.
CAUTION:
When replacing ECM, be careful not to use the
wrong spec. ECM to avoid any damage to the
fuel injection system.
85
[W15A1]2-7SERVICE PROCEDURE
15. Engine Control Module