Subaru Legacy IV (2008 year). Service manual — part 435
GD(H4DOTC)-190
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DJ:DTC P2007 INTAKE MANIFOLD RUNNER CONTROL STUCK CLOSED
(BANK 2)
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of tumble generator valve motor function.
Judge close fixing malfunction when the opening degree is small even after finishing the tumble generator
valve open driving.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. 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: 3000 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
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Engine coolant temperature
t –30 °C (–22 °F)
Ambient air temperature
t –30 °C (–22 °F)
Judgement Value
Malfunction Criteria
Threshold Value
Tumble generator valve opening
< 64.3 °
Tumble generator valve “open” signal
output
t 4600 ms
Judgement Value
Malfunction Criteria
Threshold Value
Tumble generator valve opening
t 64.3 °
Tumble generator valve “open” signal
output
t 4600 ms
GD(H4DOTC)-191
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DK:DTC P2008 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN
(BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tumble generator valve motor.
Judge as NG when the open signal is sent from IC after tumble generator valve driving IC diagnosis.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
At the main IC, check the sent signal at each timing which occurs just before the tumble generator valve out-
put is set to ON
o OFF, and judge open NG when the open NG signal is sent 96 ms × 20 time(s) in a row.
Time Needed for Diagnosis: 96 ms × 20 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG when the OK signal is sent.
Time Needed for Diagnosis: Less than 1 second
(1)
Engine control module (ECM)
(2)
Tumble generator valve
(3)
Battery
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
Low
Overcurrent NG signal input
High
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
High
Overcurrent NG signal input
High
EN-01789
E
E
(3)
M
(2)
(1)
GD(H4DOTC)-192
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DL:DTC P2009 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT LOW (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tumble generator valve motor.
Judge as NG when the overcurrent signal is sent from IC after tumble generator valve driving IC diagnosis.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
At the main IC, check the sent signal at each timing which occurs just before the tumble generator valve out-
put is set to ON
o OFF, and judge overcurrent NG when the overcurrent NG signal is sent 96 ms × 10 time(s)
in a row.
Time Needed for Diagnosis: 96 ms × 10 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG when the OK signal is sent.
Time Needed for Diagnosis: Less than 1 second
(1)
Engine control module (ECM)
(2)
Tumble generator valve
(3)
Battery
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
High
Overcurrent NG signal input
Low
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
High
Overcurrent NG signal input
High
EN-01789
E
E
(3)
M
(2)
(1)
GD(H4DOTC)-193
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DM:DTC P2011 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN
(BANK 2)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tumble generator valve motor.
Judge as NG when the open signal is sent from IC after tumble generator valve driving IC diagnosis.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
At the main IC, check the sent signal at each timing which occurs just before the tumble generator valve out-
put is set to ON
o OFF, and judge open NG when the open NG signal is sent 96 ms × 20 time(s) in a row.
Time Needed for Diagnosis: 96 ms × 20 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG when the OK signal is sent.
Time Needed for Diagnosis: Less than 1 second
(1)
Engine control module (ECM)
(2)
Tumble generator valve
(3)
Battery
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
Low
Overcurrent NG signal input
High
Judgement Value
Malfunction Criteria
Threshold Value
Open NG signal input
High
Overcurrent NG signal input
High
EN-01789
E
E
(3)
M
(2)
(1)
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