Subaru IMPREZA 2002 Service Manual page 523

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
CHECK POOR CONTACT.
Check poor contact in ECM connector.
CHECK HARNESS BETWEEN DRAIN
VALVE AND ECM CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connectors from drain valve
and ECM.
3)Measure the resistance of harness between
drain valve connector and chassis ground.
Connector & terminal
(R69)
No. 2
-
Chassis ground:
CHECK HARNESS BETWEEN DRAIN
VALVE AND ECM CONNECTOR.
Measure the resistance of harness between
ECM and drain valve connector.
Connector & terminal
(B134) NO. 10
-
(R69)
NO. 2:
CHECK DRAIN VALVE.
Measure the resistance between drain valve
terminals.
Terminals
NO. 1 -NO.
2 :
CHECK POWER SUPPLY
TO
DRAIN VALVE
1)Turn the ignition switch to ON.
2)Measure the voltage between drain valve
and chassis ground.
Connector & terminal
(R69)
No.
1 (+)
-
Chassis ground (-):
Check
there poor contact in ECM
mector?
I
the resistance less than 10
1?
i
the voltage less than 1 R?
;the resistance between 10
nd 100 R?
j
the voltage more than 10 V S
Yes
iepair poor con-
3ct in ECM con-
lector.
3epair ground
;hort circuit in har.
less between
ICM and drain
alve connector.
20 to step 5.
30 to step 6.
30 to step 7.
No
Even if MIL lights
JP, the circuit has
,eturned to a nor-
nal condition at
his time. (How-
wer, the possibility
i f poor contact still
*emains.)
VOTE:
n this case, repair
:he following:
1
Poor contact in
jrain valve con-
qector
1
Poor contact in
ECM connector
1
Poor contact in
soupling connec-
tors (R57 and
898)
Go to step 4.
Repair harness
and connector.
NOTE:
In this case, repaii
the following:
Open circuit in
harness between
ECM and drain
valve connector
Poor contact in
coupling connec-
tors (R57 and 898
Replace the drain
valve. <Ref. to
Drain Valve.>
EC(S0HC)-16,
Repair harness
and connector.
NOTE:
In this case, repai
the following:
Open circuit in
harness between
main relay and
drain valve
Poor contact in
coupling connec-
tors (R57 and 898
Poor contact in
main relay connec
tor
EN(S0HC)-199