Subaru Forester 2004 Service Manual page 181

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTIC)
Step
1 CHECK INPUT SIGNAL FROM ECM.
1) Turn the ignition switch to ON.
2) Shift the select lever to other than "N" and
"P" ranges.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B137) No. 9 (+) — Chassis ground (
2 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
(B137) No. 9 — Chassis ground:
3 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. 12 — Engine ground:
4 CHECK INHIBITOR SWITCH.
Measure the resistance between inhibitor
switch connector the receptacle's terminals in
selector lever except for "N" range.
Terminals
No. 7 — No. 12:
5 CHECK SELECTOR CABLE CONNECTION. Is there any fault in selector cable
Check
Is the voltage 4.5 — 5.5 V?
−
):
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
connection to inhibitor switch?
EN(H4DOTC 2.5)-180
Yes
Even if the mal- Go to step 2.
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.
Go to step 3. Repair ground
short circuit in har-
ness between
ECM and trans-
mission harness
connector.
Go to step 4. Repair ground
short circuit in har-
ness between
transmission har-
ness and inhibitor
switch connector.
Go to step 5. Replace the inhibi-
tor switch. <Ref. to
4AT-51, Inhibitor
Switch.>
Repair selector Contact the SUB-
cable connection. ARU dealer.
<Ref. to CS-14,
NOTE:
INSPECTION,
Inspection by DTM
Select Cable.>
is required, be-
cause probable
cause is deteriora-
tion of multiple
parts.
No