Subaru 2002 IMPREZA Service Manual page 1685

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance harness connector
between TCM and chassis ground.
Connector & terminal
(B54) No. 6 — Chassis ground:
3 CHECK TRANSFER DUTY SOLENOID.
Measure the resistance between transmission
connector and transmission terminals.
Connector & terminal
(T4) No. 6 — No. 16:
4 PREPARE SUBARU SELECT MONITOR.
5 CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
1)Connect the connectors to TCM and trans-
mission.
2)Turn the ignition switch to ON (engine OFF).
3)Throttle is fully closed.
4)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
(B54) No. 6 (+) — Chassis ground ( − − − − ):
6 CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
Measure the voltage between TCM connector
and chassis ground.
Connector & terminal
(B54) No. 6 (+) — Chassis ground ( − − − − ):
7 CHECK VEHICLE
8 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1)Connect the connectors to TCM and trans-
mission.
2)Connect the Subaru Select Monitor to data
link connector.
3)Turn the ignition switch to ON (engine OFF)
and turn Subaru Select Monitor switch to ON.
4)Move the select lever to "D" range with throt-
tle fully open (vehicle speed 0 km/h or 0 MPH).
5)Read data of transfer duty solenoid using
Subaru Select Monitor.
•Transfer duty solenoid is indicated in "%".
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance more than 1
MΩ?
Is the resistance between 10
and 17 Ω?
Do you have a Subaru Select
Monitor?
Is the voltage less than 1 V in
"P" range?
Is the voltage more than 8.5 V
in "D" range?
Is the target Non-turbo vehi-
cle?
Is the value between 5 and 10
%?
AT-99
Yes
Go to step 3. Repair the short
circuit in harness
between TCM and
transmission con-
nector.
Go to step 4. Go to step 13.
Go to step 8. Go to step 5.
Go to step 6. Go to step 12.
Even if the Go to step 12.
POWER indicator
lights up, the cir-
cuit has returned
to a normal condi-
tion at this time. A
temporary poor
contact of the con-
nector or harness
may be the cause.
Repair the har-
ness or connector
in TCM and trans-
mission.
Go to step 8. Go to step 10.
Go to step 9. Go to step 12.
No