Subaru IMPREZA GD 2007 Series Manual page 2716

asieps_tobira_IM_US.book 77 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
6 CHECK LOW & REVERSE BRAKE DUTY SO-
LENOID (IN TRANSMISSION).
1) Remove the transmission connector from
bracket.
2) Drain the automatic transmission fluid.
CAUTION:
Do not drain ATF until it cools down.
3) Remove the oil pan, and disconnect the
connector from low & reverse brake duty sole-
noid.
4) Measure the resistance between low &
reverse brake duty solenoid connector and
transmission ground.
Connector & terminal
(AT12) No. 1 — Transmission ground:
7 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND LOW & REVERSE
DUTY SOLENOID.
Measure the resistance of harness between low
& reverse duty solenoid and transmission con-
nector.
Connector & terminal
(T4) No. 6 — (AT12) No. 1:
8 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND LOW & REVERSE
BRAKE DUTY SOLENOID.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 6 — Transmission ground:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance 2.0 — 6.0 Ω? Go to step 7.
Is resistance less than 1 Ω?
Is the resistance 1 MΩ or
more?
4AT(D)(diag)-77
Yes No
Replace the low &
reverse brake duty
solenoid. <Ref. to
4AT-59, Control
Valve Body.>
Go to step 8. Repair open circuit
of harness
between low &
reverse brake duty
solenoid and trans-
mission connector.
Even if the ATF Repair the short
temperature warn- circuit of the har-
ing light blinks, the ness between the
circuit is in normal low & reverse
condition at this brake duty sole-
time. A temporary noid and the trans-
poor contact of mission connector.
connector or har-
ness may be the
cause. Repair har-
ness or connector
in low & reverse
brake duty sole-
noid and transmis-
sion.