Subaru Legacy 2002 Service Manual page 597

DIAGNOSTICS FOR ENGINE STARTING FAILURE
Engine (Diagnostics)
No.
7 CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure 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 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 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 resistance of harness between ECM
and fuel injector connector.
Connector & terminal
(B134) No. 15 — Chassis ground:
11 CHECK EACH FUEL INJECTOR.
1) Turn ignition switch to OFF.
2) Measure resistance between each fuel
injector terminals.
Terminals
No. 1 — No. 2:
12 CHECK POOR CONTACT.
Check poor contact in ECM connector.
Step
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-80
Check Yes
Go to step 8.
Repair ground
short circuit in
harness between
ECM and fuel
injector connector.
Go to step 10.
Repair ground
short circuit in
harness between
ECM and fuel
injector connector.
Go to step 12.
Repair poor con-
tact in ECM con-
nector.
No
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
ECM and fuel
injector connector
¼ Poor contact in
coupling connec-
tor (B22)
Go to step 9.
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
ECM and fuel
injector connector
¼ Poor contact in
coupling connec-
tor (B22)
Go to step 11.
Replace faulty
fuel injector.
Inspection using
"General Diagnos-
tic Table". <Ref. to
EN-292,
INSPECTION,
Genera Diagnos-
tic Table.>