Subaru LEGACY 2003 Service Manual page 56
Engine section 1
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Also See for LEGACY 2003:
- Service manual (4441 pages) ,
- Owner's manual (472 pages) ,
- Quick reference index (80 pages)
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DIAGNOSTICS FOR ENGINE STARTING FAILURE
ENGINE (DIAGNOSTICS)
2
CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from #1 cylinder fuel
injector.
3) Turn ignition switch to ON.
4) Measure power supply voltage between the
fuel injector terminal and engine ground.
Connector & terminal
#1 (E5) No. 2 (+) — Engine ground (–):
Does the measured value exceed the spec-
ified value?
3
CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from #2 cylinder fuel
injector.
3) Turn ignition switch to ON.
4) Measure power supply voltage between the
fuel injector terminal and engine ground.
Connector & terminal
#2 (E16) No. 2 (+) — Engine ground ( − − − − ):
Does the measured value exceed the spec-
ified value?
4
CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from #3 cylinder fuel
injector.
3) Turn ignition switch to ON.
4) Measure power supply voltage between the
fuel injector terminal and engine ground.
Connector & terminal
#3 (E6) No. 2 (+) — Engine ground (–):
Does the measured value exceed the spec-
ified value?
Step
EN(H4SOw/oOBD)-54
Value
10 V
10 V
10 V
Yes
Go to step 3.
Repair harness
and connector.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
main relay and fuel
injector connector
• Poor contact in
main relay con-
nector
• Poor contact in
coupling connector
(B22)
• Poor contact in
fuel injector con-
nector
Go to step 4.
Repair harness
and connector.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
main relay and fuel
injector connector
• Poor contact in
main relay con-
nector
• Poor contact in
coupling connector
(B22)
• Poor contact in
fuel injector con-
nector
Go to step 5.
Repair harness
and connector.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
main relay and fuel
injector connector
• Poor contact in
main relay con-
nector
• Poor contact in
coupling connec-
tors (B22)
• Poor contact in
fuel injector con-
nector
No
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