Subaru IMPREZA GD 2007 Series Manual page 2712

asieps_tobira_IM_US.book 73 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 connector and transmission connector.
Connector & terminal
(B55) No. 6 — (B11) No. 7:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of the harness connec-
tor between TCM connector and chassis
ground.
Connector & terminal
(B55) No. 6 — Chassis ground:
3 CHECK HIGH CLUTCH DUTY SOLENOID.
Measure the resistance between transmission
connector receptacle's terminals.
Connector & terminal
(T4) No. 7 — No. 20:
4 CHECK OUTPUT SIGNAL FROM TCM US-
ING SUBARU SELECT MONITOR.
1) Connect the connectors to TCM and trans-
mission.
2) Lift up the vehicle.
NOTE:
Raise all wheels off the floor.
3) Connect the Subaru Select Monitor to the
data link connector.
4) Start the engine, and run the Subaru Select
Monitor.
5) Start the engine and warm-up the engine
until the ATF temperature exceeds 80°C
(176°F).
NOTE:
If the ambient temperature is below 0°C (32°F),
drive the vehicle until the ATF reaches its oper-
ating temperature.
6) Read the data of high clutch duty solenoid
using Subaru Select Monitor.
• High clutch duty solenoid is indicated in "%".
7) Shift the select lever to "D" range, and slowly
increase vehicle speed to measure at 3rd or
4th.
NOTE:
The speed difference between front and rear
wheels may illuminate the ABS warning light,
but this does not indicate a malfunction. When
AT control diagnosis is finished, perform the
ABS memory clearance procedure of on-board
diagnostics system. <Ref. to ABS(diag)-26,
Clear Memory Mode.>
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 0%?
4AT(D)(diag)-73
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.