Subaru Legacy III (2000-2003 year). Service manual — part 376
EN(H6DO)-306
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
CG:DTC P1110 — ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNC-
TION (LOW INPUT) —
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC P1110?
DTC P1110 is indicated.
Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>
NOTE:
Atmospheric pres-
sure sensor is built
into ECM.
It is not necessary
to inspect DTC
P1110.
EN(H6DO)-307
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
CH:DTC P1111 — ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNC-
TION (HIGH INPUT) —
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC P1111?
DTC P1111 is indicated.
Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>
NOTE:
Atmospheric pres-
sure sensor is built
into ECM.
It is not necessary
to inspect DTC
P1111.
EN(H6DO)-308
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
CI: DTC P1134 — A/F SENSOR MICRO-COMPUTER PROBLEM —
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
EN(H6DO)-309
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
• WIRING DIAGRAM:
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC P1134?
DTC P1134 is indicated.
Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>
It is not necessary
to inspect DTC
P1134.
EN-01087
BATTERY
F44
B61
SBF-5
6
B47
MAIN RELAY
1
2
3
5
4
6
9
8
21
31
2
1
5
B252
E49
ECM
18
29
19
5
4
7
6
20
30
4
1
3
FRONT
OXYGEN
(A/F)
SENSOR RH
E47
2
4
3
1
FRONT
OXYGEN
(A/F)
SENSOR LH
E24
B137
E3
B22
B83
11
8
1
2
3
E2
B21
2
3
E2
B21
20
19
E49
B252
4
8
LHD
RHD
LHD
RHD
B252
B47
3
4
5
6
1
2
E24
E47
B137
1
2
7
8
9
5
6
3
4
10 11 12
19 20 21
29 30 31
13 14 15 16 17
27 28
18
22 23 24 25 26
1 2 3 4
5 6 7 8
3
4
1
2
1 2 3 4
5 6 7 8
F44
B21
1 2
5
6 7
8
13
14 15
16
9 10
11 12
3 4
17 18
19 20
B83
1 2 3 4
5 6 7 8 9 10
11 12
19
20
13 14 15 16 17 18
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