Subaru Legacy III (2000-2003 year). Service manual — part 151
EN(H4SO)-216
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AU:DTC P0483 — COOLING FAN RATIONALITY CHECK —
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
• TROUBLE SYMPTOM:
• Occurrence of noise
• Overheating
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode<Ref. to EN(H4SO)-47, OPER-
ATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)-40, OPERATION, Inspection
Mode.> .
NOTE:
If the vehicle, with the engine idling, is placed very close to a wall or another vehicle, preventing normal cool-
ing function, the OBD system may detect malfunction.
EN(H4SO)-217
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
• WIRING DIAGRAM:
EN-00736
2
1
4
3
21
22
24
20
8
7
5
9
20A
20A
SUB FAN
RELAY
AIR CONDITIONING RELAY HOLDER
SUB FAN
MOTOR
MAIN FAN
MOTOR
MAIN FAN
RELAY
F28
F16
F66
F27
1
2
F17
B100
F2
B72
1
2
K9
J10
NO. 3
NO. 18
NO. 17
SBF-4
SBF-1
IGNITION
SWITCH
B72
(BLUE)
3 4
1 2
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
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
F28
F66
F27
BATTERY
14
13
B134
ECM
F2
1
2 3 4
5 6 7
9 10 11 12 13 14 15 16
8
EN(H4SO)-218
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?
DTC indicated.
Inspect the rele-
vant DTC using
“List of Diagnostic
Trouble Code
(DTC)”. <Ref. to
EN(H4SO)-83, List
of Diagnostic
Trouble Code
(DTC).>
Check radiator fan
and fan motor.
<Ref. to
CO(H4SO)-28,
Radiator Main Fan
and Fan Motor.>
and <Ref. to
CO(H4SO)-30,
Radiator Sub Fan
and Fan Motor.>
EN(H4SO)-219
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
MEMO:
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