Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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)