Subaru LEGACY 2006 Manual page 3452

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
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 and support with rigid
racks.
NOTE:
Raise all wheels off the floor.
3) Connect the Subaru Select Monitor to the
data link connector.
4) Start the engine, and turn the Subaru
Select Monitor power switch ON.
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 Ratio"
using Subaru Select Monitor.
• High clutch duty solenoid is indicated in "%."
7) Shift the select lever to "D", and slowly
increase vehicle speed to measure at 3rd or
4th.
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 ABS(diag)-25, Clear
Memory Mode.>
5 CHECK OUTPUT SIGNAL FROM TCM US-
ING SUBARU SELECT MONITOR.
Return the engine to idling speed and shift the
select lever to "N" range.
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 ABS(diag)-25, Clear
Memory Mode.>
6 CHECK POOR CONTACT.
Check
Is the measured value 0%?
Is the measured value 100%? Even if the SPORT
Is there poor contact in high
clutch duty solenoid circuit?
4AT(diag)-66
Yes No
Go to step 5. Go to step 6.
Go to step 6.
indicator light is
blinking, the cir-
cuit 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.
Repair the poor Replace the TCM.
contact. <Ref. to 4AT-62,
Transmission Con-
trol Module
(TCM).>