Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 367
GD(H4DOTC)-220
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EC: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 CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(2)
Tumble generator valve
(3)
Battery
Secondary Parameters
Enable Conditions
Battery voltage
≥ 10.9 V
EN-01789
E
E
(3)
M
(2)
(1)
GD(H4DOTC)-221
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgment
At the main IC, check the sent signal at each timing which occurs immediately after the tumble generator
valve output is set to ON → 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 Judgment
Judge as OK and clear the NG when the OK signal is sent.
Time Needed for Diagnosis: Less than 1 second
Judgment Value
Malfunction Criteria
Threshold Value
Open NG signal input
Low
Judgment Value
Malfunction Criteria
Threshold Value
Open NG signal input
High
GD(H4DOTC)-222
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
ED: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 CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgment
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 → OFF, and judge open NG when the open 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 Judgment
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
≥ 10.9 V
Judgment Value
Malfunction Criteria
Threshold Value
Overcurrent NG signal input
Low
Judgment Value
Malfunction Criteria
Threshold Value
Overcurrent NG signal input
High
EN-01789
E
E
(3)
M
(2)
(1)
GD(H4DOTC)-223
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EE: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 CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(2)
Tumble generator valve
(3)
Battery
Secondary Parameters
Enable Conditions
Battery voltage
≥ 10.9 V
EN-01789
E
E
(3)
M
(2)
(1)
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