Subaru Legacy IV (2008 year). Service manual — part 418
GD(H4DOTC)-122
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Mode E: (Evaporation occurrence amount calculation)
Calculate the change of tank pressure with the time evpdset to judge as NG/OK according to the value of P1.
(ambiguous determination acceptable).
• Abnormality Judgement
Judge as NG when the following conditions are established.
Time Needed for Diagnosis:Value of Map1+ Value of Map2 + 20000 ms + 0 + Value of Map2 + 0 ms +
200000 ms + Value of Map3 + 0 ms + 200000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
Judgement Value
Malfunction Criteria
Threshold Value
P1
< Value of Map 8
Map 8 Fault criteria limit for Evaporative emission control system diagnosis
Time (evpdset) vs Fuel level
0 ms
30000 ms
50000 ms
100000 ms
160000 ms
200000 ms
0
2 (0 US gal, 0 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.2 kPa
(1.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
10
2 (2.64 US gal, 2.2 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.2 kPa
(1.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
20
2 (5.28 US gal, 4.4 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.2 kPa
(1.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
30
2 (7.93 US gal, 6.6 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.2 kPa
(1.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
0.4 kPa
(2.7 mmHg,
0.1 inHg)
40
2 (10.57 US gal, 8.8 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.2 kPa
(1.85 mmHg,
0.1 inHg)
0.3 kPa
(2.5 mmHg,
0.1 inHg)
0.3 kPa
(2.5 mmHg,
0.1 inHg)
0.3 kPa
(2.5 mmHg,
0.1 inHg)
50
2 (13.21 US gal, 11 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.3 kPa
(2 mmHg,
0.1 inHg)
0.3 kPa
(2.3 mmHg,
0.1 inHg)
0.3 kPa
(2.3 mmHg,
0.1 inHg)
0 kPa
(0 mmHg, 0
inHg)
60
2 (15.85 US gal, 13.2 Imp gal)
0 kPa
(0 mmHg, 0
inHg)
0.1 kPa
(0.5 mmHg,
0 inHg)
0.3 kPa
(2 mmHg,
0.1 inHg)
0.3 kPa
(2.3 mmHg,
0.1 inHg)
0.3 kPa
(2.3 mmHg,
0.1 inHg)
0 kPa
(0 mmHg, 0
inHg)
GD(H4DOTC)-123
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
• Normality Judgement
Judge as OK when the following conditions are established.
Time Needed for Diagnosis:Value of Map1+ Value of Map2 + 20000 ms + 0 + Value of Map2 + 0 ms +
200000 ms + Value of Map3 + 0 ms + 200000 ms
Judgement Value
Malfunction Criteria
Threshold Value
P1
> Value of Map 9
Map 9 Malfunction criteria limit for evaporation diagnosis
Time (evpdset) vs Fuel level
0 ms
30000 ms
50000 ms
100000 ms
160000 ms
200000 ms
0
2 (0 US gal, 0 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.5 kPa
(3.5 mmHg,
0.1 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
10
2 (2.64 US gal, 2.2 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.5 kPa
(3.5 mmHg,
0.1 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
0.6 kPa
(4.2 mmHg,
0.2 inHg)
20
2 (5.28 US gal, 4.4 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.4 kPa
(3.25 mmHg,
0.1 inHg)
0.5 kPa
(4.1 mmHg,
0.2 inHg)
0.5 kPa
(4.1 mmHg,
0.2 inHg)
0.5 kPa
(4.1 mmHg,
0.2 inHg)
0.5 kPa
(4.1 mmHg,
0.2 inHg)
30
2 (7.93 US gal, 6.6 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.4 kPa
(3 mmHg,
0.1 inHg)
0.5 kPa
(3.9 mmHg,
0.2 inHg)
0.5 kPa
(3.9 mmHg,
0.2 inHg)
0.5 kPa
(3.9 mmHg,
0.2 inHg)
0.5 kPa
(3.9 mmHg,
0.2 inHg)
40
2 (10.57 US gal, 8.8 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.3 kPa
(2.25 mmHg,
0.1 inHg)
0.5 kPa
(3.4 mmHg,
0.1 inHg)
0.5 kPa
(3.4 mmHg,
0.1 inHg)
0.5 kPa
(3.4 mmHg,
0.1 inHg)
0.5 kPa
(3.4 mmHg,
0.1 inHg)
50
2 (13.21 US gal, 11 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.2 kPa
(1.5 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
60
2 (15.85 US gal, 13.2 Imp gal)
0.1 kPa
(1 mmHg, 0
inHg)
0.2 kPa
(1.5 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
0.4 kPa
(2.9 mmHg,
0.1 inHg)
GD(H4DOTC)-124
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BM:DTC P0447 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL
CIRCUIT OPEN
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of the drain valve.
Judge as NG when the ECM output level differs from the actual terminal level.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Bobbin
(8)
Magnetic plate
(14)
Retainer
(2)
Coil
(9)
Shaft
(15)
Diaphragm
(3)
Diode
(10)
Plate
(16)
Movable core
(4)
Stator core
(11)
Valve
(17)
Spring
(5)
End plate
(12)
Housing
(18)
Cover
(6)
Body
(13)
Filter
(19)
O-ring
(7)
Yoke
Secondary Parameters
Enable Conditions
None
EN-02294
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
( 6 )
( 7 )
( 8 )
( 9 )
(10)
(11)
(12)
(13)
(17)
(14)
(15)
(16)
(18)
(19)
(19)
GD(H4DOTC)-125
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Time Needed for Diagnosis: Less than 1 second
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
t 10.9 V
Elapsed time after starting the engine
t 1 second
Terminal output voltage when ECM out-
puts OFF signal
Low
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
t 10.9 V
Elapsed time after starting the engine
t 1 second
Terminal output voltage when ECM out-
puts OFF signal
High
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