Subaru LEGACY 2003 Service Manual page 95
Engine section 1
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- Service manual (4441 pages) ,
- Owner's manual (472 pages) ,
- Quick reference index (80 pages)
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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
N: DTC 46 CO RESISTOR (GENERAL SPEC. VEHICLES)
• DIAGNOSIS:
• The CO resistor signal is abnormal.
• The harness connector between ECM and CO resistor is in short or open.
• The CO value is not adjusted to specifications.
• TROUBLE SYMPTOM:
• Erroneous idling
• Mixture ratio is too rich or too lean.
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, OP-
ERATION, Inspection Mode.>
• WIRING DIAGRAM:
CO RESISTOR
B136
B155
5
6
B83
ECM
EN(H4SOw/oOBD)-93
ENGINE (DIAGNOSTICS)
B155
1 2 3
B83
1 2 3 4 5 6 7 8 9 10 11 12
B136
1
2
3
4
5
6 7
8
9
11 12 13 14 15
16 17 18
19 20
10
21
22
23
24 25
26 27
28 29
30
EN-01061
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