Subaru LEGACY 2006 Manual page 3580

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse M/B (No. 12).
2 CHECK OUTPUT SIGNAL OF TCM.
1) Turn the ignition switch to ON.
2) With the brake pedal depressed, shift the
select lever to "D" range.
3) Measure the voltage between TCM and
chassis ground.
Connector & terminal
(B55) No. 15 (+) — Chassis ground (–):
3 CHECK HARNESS CONNECTOR BETWEEN
TCM AND SHIFT LOCK SOLENOID.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM and
shift lock solenoid.
3) Measure the resistance of harness
between TCM and shift lock solenoid connec-
tor.
Connector & terminal
(B55) No. 15 — (B116) No. 3:
4 CHECK HARNESS CONNECTOR BETWEEN
TCM AND SHIFT LOCK SOLENOID.
Measure the resistance of the harness
between TCM and chassis ground.
Connector & terminal
(B55) No. 15 — Chassis ground:
5 CHECK HARNESS BETWEEN SHIFT LOCK
SOLENOID AND CHASSIS GROUND TERMI-
NAL.
Measure the resistance of harness between
shift lock solenoid and chassis ground.
Connector & terminal
(B116) No. 4 — Chassis ground:
6 CHECK SHIFT LOCK SOLENOID.
Measure the resistance of shift lock solenoid
terminals.
Connector & terminal
(B116) No. 3 — No. 4:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the fuse M/B (No. 12) blown
out?
Is the voltage more than 10.5
V?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
Is the resistance between 7 —
21 Ω?
5AT(diag)-87
Yes No
Replace the fuse Go to step 2.
M/B (No. 12). If the
replaced fuse has
blown out easily,
repair short circuit
of harness
between fuse M/B
(No. 12) and TCM.
Go to step 3.
Replace the TCM.
<Ref. to 5AT-56,
Transmission Con-
trol Module
(TCM).>
Go to step 4. Repair the open
circuit of harness
between TCM and
shift lock solenoid
connector.
Go to step 5.
Repair the short
circuit of harness
between TCM and
shift lock solenoid
connector.
Go to step 6.
Repair the open
circuit of harness
between chassis
ground and shift
lock solenoid con-
nector.
Go to step 7.
Replace the shift
lock solenoid.