Subaru LEGACY 2006 Manual page 3593

asieps_tobira.book 100 ページ ２００９年１０月２６日 月曜日 午前９時１６分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
2 CHECK TCM AND TRANSMISSION HAR-
NESS CONNECTOR.
1) Disconnect the connectors from TCM and
transmission.
2) Measure the resistance of harness
between TCM connector and transmission
connector.
Connector & terminal
(B55) No. 18 — (B12) No. 5:
(B54) No. 16 — (B11) No. 7:
3 CHECK TCM AND TRANSMISSION HAR-
NESS CONNECTOR.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
(B54) No. 16 — Chassis ground:
(B55) No. 18 — Chassis ground:
4 CHECK TCM POWER SUPPLY OUTPUT.
1) Connect the connector to TCM. (Transmis-
sion connector is disconnected)
2) Turn the ignition switch to ON. (engine
OFF)
3) Measure the voltage between transmission
connector and chassis ground.
Connector & terminal
(B11) No. 7 (+) — Chassis ground (–):
5 CHECK HARNESS ASSEMBLY (TURBINE
SPEED SENSOR GROUND).
Check the installing condition of ground con-
necting harness (used for both of turbine
speed sensor 1, rear vehicle speed sensor).
6 CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect all connectors.
2) Lift-up the vehicle and support with rigid
racks.
NOTE:
Raise all wheels off floor.
3) Start the engine, and drive the vehicle.
4) Read the current data of front wheel speed
using Subaru Select Monitor. <Ref. to
5AT(diag)-16, OPERATION, Subaru Select
Monitor.>
NOTE:
The speed difference between front and rear
wheels may light the ABS warning light, but this
does not indicate a malfunction. When AT con-
trol diagnosis is finished, perform the ABS
memory clearance procedure of on-board diag-
nostics system. <Ref. to VDC(diag)-20, CLEAR
MEMORY MODE, OPERATION, Subaru Se-
lect Monitor.>
Check
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the voltage 10 — 13 V?
Is the ground connecting har-
ness installed to transmission
body correctly, or the harness
and connector terminals not
damaged?
Does the value of the front
wheel speed depending on the
acceleration and deceleration
of the vehicle?
5AT(diag)-100
Yes No
Go to step 3. Repair the open
circuit of harness
between TCM and
transmission con-
nector.
Go to step 4. Repair the short
circuit of harness
between TCM and
transmission con-
nector.
Go to step 5.
Replace the TCM.
<Ref. to 5AT-56,
Transmission Con-
trol Module
(TCM).>
Go to step 6.
When the poor
installation of
ground connect-
ing harness, install
it securely.
Replace the trans-
mission assembly
when the harness
is damaged. <Ref.
to 5AT-34, Auto-
matic Transmis-
sion Assembly.>
Even if the SPORT Replace the trans-
indicator light mission harness.
blinks, the system
is in normal condi-
tion. A temporary
poor contact of
connector or har-
ness may be the
cause. Repair poor
contact of har-
ness in ATF tem-
perature sensor
and transmission
connector.