Subaru IMPREZA GD 2007 Series Manual page 2688

asieps_tobira_IM_US.book 49 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
1 CHECK TORQUE CONVERTER TURBINE
SPEED SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Measure the resistance between transmis-
sion connector receptacle's terminals.
Connector & terminal
(T4) No. 5 — No. 10:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Disconnect the connector from TCM.
2) Measure the resistance of harness between
TCM connector and transmission connector.
Connector & terminal
(B55) No. 1 — (B11) No. 5:
3 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness between
TCM connector and transmission connector.
Connector & terminal
(B55) No. 2 — (B11) No. 10:
4 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
(B55) No. 2 — Chassis ground:
5 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
(B55) No. 1 — Chassis ground:
6 CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect the connectors to TCM and trans-
mission.
2) Connect the Subaru Select Monitor to the
data link connector.
3) Turn the ignition switch to ON and run the
Subaru Select Monitor.
4) Start the engine.
5) Move the select lever to "P" or "N" range.
6) Read the data of turbine speed using Sub-
aru Select Monitor.
Compare the tachometer with Subaru Select
Monitor indications.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance 450 — 650 Ω? Go to step 2.
Is the resistance less than 1 Ω? Go to step 3.
Is the resistance less than 1 Ω? Go to step 4.
Is the resistance 1 MΩ or
more?
Is the resistance 1 MΩ or
more?
Is the revolution value same as
the tachometer reading shown
on the combination meter?
4AT(D)(diag)-49
Yes No
Replace the torque
converter turbine
speed sensor.
<Ref. to 4AT-56,
Torque Converter
Turbine Speed
Sensor.>
Repair the open
circuit of harness
between TCM and
transmission con-
nector.
Repair the open
circuit of harness
between TCM and
transmission con-
nector, and poor
contact of the con-
nector.
Go to step 5. Repair the short
circuit of harness
between TCM and
transmission con-
nector.
Go to step 6.
Repair the short
circuit of the har-
ness between
TCM and transmis-
sion connector,
and poor contact of
connector.
Even if the ATF Repair the poor
temperature warn- contact.
ing light blinks, the
circuit is in normal
condition at this
time. A temporary
poor contact of
connector or har-
ness may be the
cause. Repair the
harness or con-
nector in TCM and
transmission.