Subaru IMPREZA GD 2007 Series Manual page 2706

asieps_tobira_IM_US.book 67 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 HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance of harness between
TCM and transmission connector.
Connector & terminal
(B54) No. 7 — (B11) No. 4:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness between
TCM connector and transmission ground.
Connector & terminal
(B54) No. 7 — Chassis ground:
3 CHECK LOW CLUTCH DUTY SOLENOID.
Measure the resistance between transmission
connector terminals.
Connector & terminal
(T4) No. 4 — No. 20:
4 CHECK OUTPUT SIGNAL FROM TCM US-
ING SUBARU SELECT MONITOR.
1) Connect the connectors to TCM and trans-
mission.
2) Connect the Subaru Select Monitor to the
data link connector.
3) Start the engine, and run the Subaru Select
Monitor.
4) Warm-up the transmission until the ATF
temperature exceeds approximately 80°C
(176°F).
NOTE:
If the ambient temperature falls below 0°C
(32°F), drive the vehicle until the ATF reaches
its operating temperature.
5) Stop the engine and turn the ignition switch
to ON (with engine OFF).
6) Shift the select lever to "P" or "N" range, and
depress the accelerator pedal.
7) Read the data of low clutch duty solenoid
using the Subaru Select Monitor.
Low clutch duty solenoid is indicated in "%".
5 CHECK OUTPUT SIGNAL FROM TCM US-
ING SUBARU SELECT MONITOR.
1) Turn the ignition switch to ON (engine OFF).
2) Move the select lever to "D" range.
3) Read the data of low clutch duty solenoid.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is resistance less than 1 Ω?
Is the resistance 1 MΩ or
more?
Is the resistance 2.0 — 6.0 Ω? Go to step 4.
Is the measured value 100%?
Is the measured value 0%?
4AT(D)(diag)-67
Yes No
Go to step 2. Repair the open
circuit of harness
between TCM and
transmission con-
nector.
Go to step 3. Repair the short
circuit of harness
between TCM and
transmission con-
nector.
Go to step 6.
Go to step 5.
Repair the poor
contact.
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 transmis-
sion.