Subaru 2003 LEGACY Service Manual page 99

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK DTC.
Do multiple trouble codes appear in the on-
board diagnostics test mode?
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn ignition switch to OFF.
2) Disconnect connector from TCM and trans-
mission.
3) Measure resistance of harness between
TCM and transmission connector.
Connector & terminal
(B54) No. 7 — (B11) No. 13:
Is the measured value less than the speci-
fied value?
3 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure resistance of harness connector
between TCM and chassis ground.
Connector & terminal
(B54) No. 7 — Chassis ground:
Does the measured value exceed the specified
value?
4 CHECK LOCK-UP DUTY SOLENOID.
Measure resistance between transmission
connector receptacle's terminals.
Connector & terminal
(T4) No. 13 — No. 16:
Is the measured value within the specified
range?
5 PREPARE SUBARU SELECT MONITOR.
Do you have a Subaru Select Monitor?
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Value
DTC is displayed.
1 Ω
1 MΩ
10 — 17 Ω
Subaru Select Monitor is avail-
able.
AT-97
Yes
Go to another Go to step 2.
Diagnostic trouble
code (DTC).
Go to step 3. Repair open circuit
in harness
between TCM and
transmission con-
nector.
Go to step 4. Repair short circuit
in harness
between TCM and
transmission con-
nector.
Go to step 5. Go to step 11.
Go to step 8. Go to step 6.
No