Subaru Legacy 2002 Service Manual page 1861

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Automatic Transmission (Diagnostics)
No.
7 CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
1) Return the engine to idling speed and
move select lever to "N".
2) Measure voltage between TCM connector
and chassis ground.
Connector & terminal
(B54) No. 7 (+) — Chassis ground (−):
8 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1) Connect connectors to TCM and transmis-
sion.
2) Lift-up the vehicle and place safety stand.
NOTE:
On AWD models, raise all wheels off ground.
3) Connect Subaru Select Monitor to data link
connector.
4) Start the engine, and turn Subaru Select
Monitor switch to ON.
5) Start the engine and warm-up the transmis-
sion until ATF temperature is above 80°C
(176°F).
NOTE:
If ambient temperature is below 0°C (32°F),
drive the vehicle until the ATF reaches its
operating temperature.
6) Read data of lock-up duty solenoid using
Subaru Select Monitor.
¼ Lock-up duty solenoid is indicated in "%".
7) Move selector lever to "D" and slowly
increase vehicle speed to 75 km/h (47 MPH).
Wheels will lock-up.
NOTE:
The speed difference between front and rear
wheels may light the ABS warning light, but
this indicates no malfunction. When AT control
diagnosis is finished, perform the ABS
memory clearance procedure of on-board
diagnostics system. <Ref. to ABS-21, Clear
Memory Mode.>
9 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
Return the engine to idling speed and move
selector lever to "N".
NOTE:
The speed difference between front and rear
wheels may light the ABS warning light, but
this indicates no malfunction. When AT control
diagnosis is finished, perform the ABS
memory clearance procedure of on-board
diagnostics system. <Ref. to ABS-21, Clear
Memory Mode.>
Step
Is the voltage less than 0.5
V?
Is the value 95%?
Is the value 5%?
AT-92
Check Yes
Even if "POWER"
indicator lights up,
the circuit has
returned to a nor-
mal condition at
this time. A tem-
porary poor con-
tact of the con-
nector or harness
may be the
cause. Repair
harness or con-
nector in TCM
and transmission.
Go to step 9.
Even if "POWER"
indicator lights up,
the circuit has
returned to a nor-
mal condition at
this time. A tem-
porary poor con-
tact of the con-
nector or harness
may be the
cause. Repair
harness or con-
nector in TCM
and transmission.
No
Go to step 10.
Go to step 10.
Go to step 10.