Transfer Clutch Pressure Test - Subaru Impreza 2002 Service Manual

AUTOMATIC TRANSMISSION
8. Transfer Clutch Pressure
Test
A: INSPECTION
1. TEST METHODS
• MPT model
Check the transfer clutch pressure in accordance
with the following chart in the same manner as with
line pressure. <Ref. to AT-16, 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
NOTE:
Before setting in FWD mode, install the spare fuse
on FWD mode switch.
(A) Test plug
• VTD model
Check the transfer clutch pressure in accordance
with the following chart in the same manner as with
line pressure.
ST 498897700 OIL PRESSURE ADAPTER
SET
ST 498575400 OIL PRESSURE GAUGE
ASSY
(A) Test plug

TRANSFER CLUTCH PRESSURE TEST

B3M1047C
H3M1840B
2. EVALUATION
• MPT model
NOTE:
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.
Standard transfer clutch pressure kPa (kg/cm
ON Duty
Throttle
ratio
position
(%)
95 Full open
2/3
60
throttle
Full
5
closed
• VTD model
OFF Duty
Throttle
ratio
position
(%)
95 Full open
40 2/3 throttle
AT-18
2
, psi)
FWD
AWD mode
mode
932 — 1,089
(9.5 — 11.1,
135 — 158)
216 — 294
(2.2 — 3.0, 31 — 43)
— 0 (0, 0)
Standard transfer clutch pres-
2
sure kPa (kg/cm , psi)
932 — 1,089
(9.5 — 11.1, 135 — 158)
216 — 294
(2.2 — 3.0, 31 — 43)
—
—