Subaru Legacy IV (2008 year). Service manual — part 626
GD(H6DO)-124
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CE: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(H6DO)-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
GD(H6DO)-126
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CF:DTC P0448 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL
CIRCUIT SHORTED
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(H6DO)-127
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 ON signal
High
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 ON signal
Low
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