Subaru IMPREZA 2002 Service Manual page 400

DIAGNOSTICS FOR ENGINE STARTING FAILURE
ENGINE (DIAGNOSTICS)
Step
CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Check Yes No
Go to step 8. Is the resistance between 5 Repair harness
and 20 R? and connector.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(8134)
NO.
14
-
(8136)
NO.
2:
I
Is the resistance between 5
and 20 R?
Go to step 10.
1 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(8134)
No.
14
-
Chassis ground:
CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
I
Connector & terminal
(8134) NO. 15
-
(8136)
NO.
2:
Repair harness
and connector.
NOTE:
In this case, repait
the following:
Open circuit in
harness between
ECM and fuel
injector connector
Poor contact in
coupling connector
(822)
short circuit in har-
ness between
ECM and fuel
injector connector.
0 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
R?
Measure the resistance of harness between
ECM and fuel injector connector.
IS
the resistance less than 1
Connector & terminal
( 8 134)
No.
15
-
Chassis ground:
1 CHECK EACH FUEL INJECTOR. Is the resistance between 5
1)Turn the ignition switch to OFF.
2)Measure the resistance between each fuel
injector terminals.
and 20 R?
Terminals
NO.
1
-NO.
2:
2 CHECK POOR CONTACT. Is there poor contact in ECM
Check poor contact in ECM connector. connector?
NOTE:
In this case, repaii
the following:
Open circuit in
harness between
ECM and fuel
injector connector
Poor contact in
coupling connector
Go to step 9.
(622)
Repair ground
short circuit in har-
ness between
ECM and fuel
injector connector.
Go to step 12.
Repair poor con-
tact in ECM con-
Go to step 11.
Replace the faulty
fuel injector.
Inspection using
"General Diagnos-
tic Table". <Ref. to
INSPECTION,
General Diagnos-
tic Table.>
EN( S0HC)-330,
EN(S0HC)-76