Subaru Impreza 2004 - Page 378

EN(H4SO)(diag)-72
ENGINE (DIAGNOSTICS)
Diagnostics for Engine Starting Failure
F: FUEL INJECTOR CIRCUIT
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO)(diag)-47,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-40, OPERATION,
Inspection Mode.>.
• WIRING DIAGRAM:
Step Check Yes No
1 CHECK OPERATION OF EACH FUEL INJEC-
TOR.
While cranking the engine, check that each
fuel injector emits “operating” sound. Use a
sound scope or attach a screwdriver to the
injector for this check.
Dose the fuel injector operate? Check the fuel
pressure. <Ref. to
ME(H4SO)-31,
INSPECTION,
Fuel Pressure.>
Go to step 2.
EN-01428
B22
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
E6 E17
E5 E16
1 2
1 2
1
2
1
2
1 2
22 23 34
8
9 1
10 11
12
ECM
B134
E5 E16 E6 E17
B22
E3
FUEL INJECTOR
No. 1
FUEL INJECTOR
No. 2
FUEL INJECTOR
No. 3
FUEL INJECTOR
No. 4
BATTERY
SBF-5
B47
MAIN RELAY
1
2
3
5
4
6
B47
34
12
56
F44
123
4
5 6 7 8
B134
1 2 3 4 5 6 7 8
9 10 11 12 13 14
15 16 17 18 19 20 21 22 23
24 25 26 27 28 29 30 31 32 33 34 35
B61
F44
2
LHD
RHD
LHD
RHD
E