Transfer Clutch Pressure Test - Subaru Impreza 2003 Service Manual

AUTOMATIC TRANSMISSION
8. Transfer Clutch Pressure
Test
A: INSPECTION
• MPT MODEL
Check the transfer clutch pressure in accordance
with the following chart in the same manner as with
line pressure. <Ref. to 4AT-37, Line Pressure
Test.>
ST 498897700 OIL PRESSURE ADAPTER
SET
ST 498575400 OIL PRESSURE GAUGE
ASSY
AWD mode: "D" range
FWD mode: "P" range, engine speed 2,000 rpm
If oil pressure is not produced or if it does not
change in the AWD mode, the transfer duty sole-
noid or transfer valve assembly may be malfunc-
tioning. If oil pressure is produced in the FWD
mode, the problem is similar to that in the AWD
mode.
NOTE:
Before setting in FWD mode, install the spare fuse
on FWD mode switch.
(A) Test plug
Standard transfer clutch pressure kPa (kg/cm
ON Duty Throttle
ratio (%) position
5 Full open
(9.5 — 11.1, 135 — 158)
60 2/3 throttle
95 Full closed

TRANSFER CLUTCH PRESSURE TEST

( A )
AT-00021
2
, psi)
FWD
AWD mode
mode
932 — 1,089
216 — 294
(2.2 — 3.0, 31 — 43)
— 0 (0, 0)
• VTD MODEL
Check transfer clutch pressure using the following
chart. <Ref. to 4AT-37, Line Pressure Test.>
ST 498897700
ST 498575400
(A) Test plug
Duty ratio
(%)
95
60
—
—
4AT-38
OIL PRESSURE ADAPTER
SET
OIL PRESSURE GAUGE
ASSY
(A)
Standard of transfer clutch
Throttle open-
ing angle
pressure kPa (kg/cm
932 — 1,089
Fully open
(9.5 — 11.1, 135 — 158)
216 — 294
2/3 open
(2.2 — 3.0, 33 — 43)
AT-00676
2
, psi)