Subaru 2009 IMPREZA, Service Manual

Page: 1675 / 3619

GD(H4DOTC)-87
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
• Catalyst damage misfire (Misfire occurrence level damaging catalyst)
• Abnormality Judgement
Map 3
Time Needed for Diagnosis: 200 engine revs.
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Time Needed for Diagnosis: 200 engine revs.
AT:DTC P0302 CYLINDER 2 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0301. <Ref. to GD(H4DOTC)-81, DTC P0301 CYLINDER 1 MIS-
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
AU:DTC P0303 CYLINDER 3 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0301. <Ref. to GD(H4DOTC)-81, DTC P0301 CYLINDER 1 MIS-
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
AV:DTC P0304 CYLINDER 4 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0301. <Ref. to GD(H4DOTC)-81, DTC P0301 CYLINDER 1 MIS-
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
Judgement Value
Malfunction Criteria Threshold Value
Catalyst damage misfire judgement value
t
Value from Map 3
Intake air (g(oz)/rev)
0.2
(0.01)
0.4
(0.01)
0.6
(0.02)
0.8
(0.03)
1
(0.04)
1.2
(0.04)
1.4
(0.05)
1.6
(0.06)
1.8
(0.06)
2
(0.07)
Engine
speed
(rpm)
700 148 128 116 106 100 90 90 90 90 90
1000 148 128 114 104 92 85 85 85 85 85
1500 140 118 102 90 85 85 85 72 72 72
2000 128 90 90 73 58 43 40 36 32 20
2500 116 87 57 45 39 36 34 32 30 20
3000 108 87 58 39 36 36 32 30 28 20
3500 98 74 43 27 23 22 20 20 20 20
4000 69 61 40 27 22 20 20 20 20 20
4500 60 55 34 25 20 20 20 20 20 20
5000 55 55 34 23 20 20 20 20 20 20
5500 54 54 33 22 20 20 20 20 20 20
6000 52 52 32 21 20 20 20 20 20 20
6500 50 50 30 20 20 20 20 20 20 20
6700 50 50 30 20 20 20 20 20 20 20
Judgement Value
Malfunction Criteria Threshold Value
Catalyst damage misfire judgement value < Value of Map 3