1999 SUBARU LEGACY Service Repair Manual

range (above the center between upper and lower
marks). When the transmission is hot, the level
should be above the center of upper and lower
marks, and when it is cold, the level should be
found below the center of these two marks.
CAUTION:
IUse care not to exceed the upper limit level.
IATF level varies with temperature. Remem-
ber that the addition of fluid to the upper limit
mark when the transmission is cold will result
in the overfilling of fluid.
4) Fluid temperature rising speed
IBy idling the engine
Time for temperature rise to 60ÉC (140ÉF) with
atmospheric temperature of 0ÉC (32ÉF): More than
25 minutes

Time for temperature rise to 30ÉC (86ÉF) with
atmospheric temperature of 0ÉC (32ÉF): Approx. 8
minutes
IBy running the vehicle
Time for temperature rise to 60ÉC (140ÉF) with
atmospheric temperature of 0ÉC (32ÉF): More than
10 minutes
5) Method for checking fluid level upon delivery or
at periodic inspection
Check fluid level after a warm-up run of approx. 10
minutes. During the warm-up period, the automatic
transmission functions can also be checked.
2. DIFFERENTIAL GEAR OIL LEVEL
1) Ensure the vehicle is in safe condition.
NOTE:
Do not check the oil level nor add oil to the case
with the front end of the vehicle jacked-up; this will
result in an incorrect reading of the oil level.
2) Check whether the oil level is between the
upper (F) and lower (L) marks. If it is below the
lower limit mark, add oil until the level reaches the
upper mark.
G3M0283
3. OIL LEAKAGE
It is difficult to accurately determine the precise
position of a oil leak, since the surrounding area
also becomes wet with oil. The places where oil
seals and gaskets are used are as follows:
1) Jointing portion of the case
ITransmission case and oil pump housing joint-
ing portion
ITorque converter clutch case and oil pump
housing jointing portion
ITransmission case and extension case jointing
portion
B3M1021
2) Torque converter clutch case
IEngine crankshaft oil seal
ITorque converter clutch impeller sleeve oil seal
IATF cooler pipe connector
ITorque converter clutch
ITorque converter clutch case
IAxle shaft oil seal
IO-ring on the outside diameter of axle shaft oil
seal holder
IO-ring on the differential oil gauge
IDifferential oil drain plug
ILocation of steel balls
B3M1022
28
3-2[W1B2]SERVICE PROCEDURE
1. General

3) Oil pump housing
IOil pump housing (Defective casting)
IO-ring on the test plugs
IDifferential gear breather
B3M1023
4) Automatic transmission case
ITransmission case (Defective casting)
IMating surface of oil pan
IO-ring on the test plugs
IOil supply pipe connector
IATF cooler pipe connector and gasket
IOil pan drain plug
IO-ring on the transmission harness holder
IOil pump plugs
IATF breather
IShift lever oil seal
IO-ring on the vehicle speed sensor 2 (Front)
IO-ring on the turbine revolution sensor
IATF filter oil seal
B3M1024
5) Extension case
IExtension case (Defective casting)
IO-ring on the vehicle speed sensor 1 (Rear)
IRear drive shaft oil seal
IO-ring on the test plugs
B3M1026
29
[W1B3]3-2SERVICE PROCEDURE
1. General

2. Inhibitor Switch
A: INSPECTION
When driving condition or starter motor operation
is erroneous, first check the shift linkage for
improper operation. If the shift linkage is function-
ing properly, check the inhibitor switch.
S3M0013A
1) Disconnect cable end from select lever.
2) Disconnect inhibitor switch connector.
3) Check continuity in inhibitor switch circuits with
select lever moved to each position.
CAUTION:
Also check that continuity in ignition circuit
does not exist when select lever is in R, D, 3, 2
and 1 ranges.
NOTE:
If inhibitor switch is inoperative, check for poor con-
tact of connector on transmission side.
Signal sent to TCMPosition Pin No.
P 4Ð3
R 4Ð2
N 4Ð1
D 4Ð8
3 4Ð7
2 4Ð6
1 4Ð5
Ignition circuit P/N 12 Ð 11
Back-up light circuit R 10 Ð 9
B3H0016B
4) Check if there is continuity at equal points when
the select lever is turned 1.5É in both directions
from the N range.
If there is continuity in one direction and the conti-
nuity in the other or if there is continuity at unequal
points, adjust the inhibitor switch.
G3M0293
B: ADJUSTMENT
1) Loosen the three inhibitor switch securing bolts.
2) Shift the select lever to the N range.
3) Insert ST as vertical as possible into the holes
in the inhibitor switch lever and switch body.
ST 499267300 STOPPER PIN
B3M1027A
4) Tighten the three inhibitor switch bolts.
Tightening torque:
3.4
±0.5 N´m (0.35±0.05 kg-m, 2.5±0.4 ft-lb)
5) Repeat the above checks. If the inhibitor switch
is determined to be ªfaultyº, replace it.
30
3-2[W2A0]SERVICE PROCEDURE
2. Inhibitor Switch

C: REMOVAL
1) Move select lever to neutral position.
2) Remove air intake chamber and duct. (Except
2200 cc California spec. vehicles) [W1A0].>
3) Remove air cleaner case and duct. (2200 cc
California spec. vehicles)
and
4) Disconnect inhibitor switch connector.
B3M1028A
5) Remove front exhaust pipe. [W1A0].>
6) Remove snap pin from range select lever.
B3M1029A
7) Remove plate assembly from transmission
case.
B3M1030A
8) Remove bolts.
B3M1031A
9) Move range select lever to parking position (left
side).
B3M1032A
10) Remove inhibitor switch from transmission.
B3M1033A
D: INSTALLATION
1) Install inhibitor switch to transmission case.
B3M1033A
31
[W2D0]3-2SERVICE PROCEDURE
2. Inhibitor Switch

2) Move range select lever to neutral position.
3) Using ST, tighten bolts of inhibitor switch. to 3-2 [W2B0].>
ST 499267300 STOPPER PIN
B3M1034A
4) Install select cable to range select lever.
5) Install plate assembly to transmission.
Tightening torque:
T: 24.5
±2.0 N´m (2.50±0.20 kg-m, 18.1±1.4
ft-lb)
B3M1030B
6) Install snap pin to range select lever.
B3M1029A
7) Install front exhaust pipe.
8) Connect inhibitor switch connector.
B3M1028A
9) Install air intake chamber and duct. (Except
2200 cc California spec. vehicles) [W1A0].>
10) Install air cleaner case and duct. (2200 cc
California spec. vehicles)
and
32
3-2[W2D0]SERVICE PROCEDURE
2. Inhibitor Switch

3. Sensor (in transmission)
A: INSPECTION
1) Remove air intake chamber and duct.
2) Disconnect transmission connector.
S2M0212A
3) Check each sensor, solenoid and ground sys-
tem for short circuits.
S3M0039A
B3M1035A
(A) Torque converter turbine speed
sensor
(B) Vehicle speed sensor 2 (Front)
(C) Vehicle speed sensor 1 (Rear)
(D) ATF temperature sensor(E) Duty solenoid A (Line pressure)
(F) Duty solenoid B (Lock-up)
(G) Duty solenoid C (Transfer)
(H) Duty solenoid D (2-4 brake)
(I) Shift solenoid 1(J) Shift solenoid 2
(K) 2-4 brake timing solenoid
(L) Low clutch timing solenoid
(M) Transmission connector
33
[W3A0]3-2SERVICE PROCEDURE
3. Sensor (in transmission)

1. EVALUATION
NOTE:
If part is faulty, its resistance value will be different
from the standard value indicated above.
Part name Terminal Resistance (W)
Vehicle speed sensor 1 17 Ð 18 450 Ð 650
Vehicle speed sensor 2 19 Ð 20 450 Ð 650
ATF temperature sensor 11 Ð 122,100 Ð 2,900/
20ÉC (68ÉF)
275 Ð 375/
80ÉC (176ÉF)
Torque converter turbine
speed sensor14 Ð 15 450 Ð 650
Shift solenoid 1 1 Ð 16 10 Ð 17
Shift solenoid 2 2 Ð 16 10 Ð 17
Duty solenoid A
(Line pressure solenoid)5Ð16 2.0Ð4.5
Duty solenoid B
(Lock-up solenoid)13Ð16 10Ð17
Duty solenoid D
(2-4 brake solenoid)9Ð16 2.0Ð4.5
Low clutch timing solenoid 3 Ð 16 10 Ð 16
2-4 brake timing solenoid 4 Ð 16 10 Ð 16
Duty solenoid C
(Transfer clutch solenoid)6Ð16 10Ð17
4. Shift Solenoid, Duty
Solenoid and Valve
A: REMOVAL
1) Clean transmission exterior.
2) Drain ATF completely.
NOTE:
Tighten ATF drain plug after draining ATF.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
B3M1036A
3) Remove oil pan.
NOTE:
Drain oil into a container.
4) Disconnect solenoid and sensor connectors.
Remove connectors from clip and disconnect con-
nectors at 8 places.
B2M2263C
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
34
3-2[W3A1]SERVICE PROCEDURE
4. Shift Solenoid, Duty Solenoid and Valve

1. EVALUATION
NOTE:
If part is faulty, its resistance value will be different
from the standard value indicated above.
Part name Terminal Resistance (W)
Vehicle speed sensor 1 17 Ð 18 450 Ð 650
Vehicle speed sensor 2 19 Ð 20 450 Ð 650
ATF temperature sensor 11 Ð 122,100 Ð 2,900/
20ÉC (68ÉF)
275 Ð 375/
80ÉC (176ÉF)
Torque converter turbine
speed sensor14 Ð 15 450 Ð 650
Shift solenoid 1 1 Ð 16 10 Ð 17
Shift solenoid 2 2 Ð 16 10 Ð 17
Duty solenoid A
(Line pressure solenoid)5Ð16 2.0Ð4.5
Duty solenoid B
(Lock-up solenoid)13Ð16 10Ð17
Duty solenoid D
(2-4 brake solenoid)9Ð16 2.0Ð4.5
Low clutch timing solenoid 3 Ð 16 10 Ð 16
2-4 brake timing solenoid 4 Ð 16 10 Ð 16
Duty solenoid C
(Transfer clutch solenoid)6Ð16 10Ð17
4. Shift Solenoid, Duty
Solenoid and Valve
A: REMOVAL
1) Clean transmission exterior.
2) Drain ATF completely.
NOTE:
Tighten ATF drain plug after draining ATF.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
B3M1036A
3) Remove oil pan.
NOTE:
Drain oil into a container.
4) Disconnect solenoid and sensor connectors.
Remove connectors from clip and disconnect con-
nectors at 8 places.
B2M2263C
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
34
3-2[W3A1]SERVICE PROCEDURE
4. Shift Solenoid, Duty Solenoid and Valve