Subaru Impreza 2003 Service Manual page 845

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
F: DTC 24 IDLE AIR CONTROL SOLENOID VALVE
• DIAGNOSIS:
• The idle air control solenoid valve is not in function.
• The harness connector between ECM and idle air control solenoid valve is open or shorted.
• TROUBLE SYMPTOM:
• Erroneous idling
• Hard to start
• Poor driving performance
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory and inspection modes. <Ref. to
EN(H4SOw/oOBD)-28, OPERATION, Clear Memory Mode.> and <Ref. to EN(H4SOw/oOBD)-26, OPER-
ATION, Inspection Mode.>
• WIRING DIAGRAM:
MAIN RELAY
6
4
5
3
2
1
B47
E22
E3
IDLE AIR
CONTROL
SOLENOID
VALVE
E7
E2
B21
B134 ECM
SBF-5
LHD LHD
2
B61 F44
EN(H4SOw/oOBD)-69
BATTERY
1 2
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25
E
ENGINE (DIAGNOSTICS)
B47
1 2
3 4
5 6
E7
1 2 3
4 5 6
F44
1 2 3 4
5 6 7 8
B22
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
B21
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
17 18 19 20
B134
3 4 5 6 7 8
26 27 28 29 30 31 32 33 34 35
EN-01557