Subaru 2002 IMPREZA Service Manual page 514

DIAGNOSTICS FOR ENGINE STARTING FAILURE
ENGINE (DIAGNOSTICS)
Step
7 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(B134) No. 14 — (B136) No. 2:
8 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(B134) No. 14 — Chassis ground:
9 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(B134) No. 15 — (B136) No. 2:
10 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
(B134) No. 15 — Chassis ground:
11 CHECK EACH FUEL INJECTOR.
1)Turn the ignition switch to OFF.
2)Measure the resistance between each fuel
injector terminals.
Terminals
No. 1 — No. 2:
12 CHECK POOR CONTACT.
Check poor contact in ECM connector.
Check
Is the resistance between 5
and 20 Ω?
Is the resistance less than 1
Ω?
Is the resistance between 5
and 20 Ω?
Is the resistance less than 1
Ω?
Is the resistance between 5
and 20 Ω?
Is there poor contact in ECM
connector?
EN-82
Yes
Go to step 8. Repair the har-
ness and connec-
tor.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
ECM and fuel
injector connector
• Poor contact in
coupling connector
(B22)
Repair the ground Go to step 9.
short circuit in har-
ness between
ECM and fuel
injector connector.
Go to step 10. Repair the har-
ness and connec-
tor.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
ECM and fuel
injector connector
• Poor contact in
coupling connector
(B22)
Repair the ground Go to step 11.
short circuit in har-
ness between
ECM and fuel
injector connector.
Go to step 12. Replace the faulty
fuel injector.
Repair the poor Inspection using
contact in ECM "General Diagnos-
connector. tic Table". <Ref. to
EN-292, INSPEC-
TION, General
Diagnostic Table.>
No