Subaru LEGACY 2006 Manual page 278

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK SELECT CABLE.
2 CHECK INPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Place the select lever other than "N" and "P"
range.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B136) No. 31 (+) — Chassis ground (–):
3 CHECK HARNESS BETWEEN ECM AND
TRANSMISSION HARNESS CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and
transmission harness connector (T3).
3) Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(B136) No. 31 — Chassis ground:
(B136) No. 6 — Chassis ground:
4 CHECK TRANSMISSION HARNESS CON-
NECTOR.
1) Disconnect the connector from inhibitor
switch.
2) Measure the resistance of harness between
transmission harness connector and engine
ground.
Connector & terminal
(T3) No. 11 — Engine ground:
5 CHECK INHIBITOR SWITCH.
Measure the resistance between inhibitor
switch connector receptacles terminals with
select lever at other than "N" or "P" range.
Terminals
No. 7 — No. 12:
Check
Is there any fault in the select
cable?
Is the voltage more than 10 V? Even if the mal-
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
EN(H4SO)(diag)-241
ENGINE (DIAGNOSTICS)
Yes No
Repair or adjust Go to step 2.
the select cable.
<Ref. to CS-26,
INSPECTION,
Select Cable.>
Go to step 3.
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.
Go to step 4. Repair the ground
short circuit of har-
ness between
ECM and transmis-
sion harness con-
nector.
Go to step 5.
Repair the ground
short circuit of har-
ness between
transmission har-
ness connector
and inhibitor switch
connector.
Contact the SOA Replace the inhibi-
service center. tor switch. <Ref. to
4AT-46, Inhibitor
Switch.>