Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 369

GD(H4DOTC)-228

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EH:DTC P2017 TUMBLE GENERATED VALVE POSITION SENSOR 1 CIRCUIT

HIGH

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of tumble generator valve position sensor.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Rotor

(3)

Voltage (V)

(4)

Tumble generator valve opening
(°)

(2)

Return spring

Secondary Parameters

Enable Conditions

None

EN-01768

(3)

(4)

(1)

(2)

GD(H4DOTC)-229

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

≥ 4.783 V

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

< 4.783 V

GD(H4DOTC)-230

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EI: DTC P2021 TUMBLE GENERATED VALVE POSITION SENSOR 2 CIRCUIT

LOW

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of tumble generator valve position sensor.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Rotor

(3)

Voltage (V)

(4)

Tumble generator valve opening
(°)

(2)

Return spring

Secondary Parameters

Enable Conditions

None

EN-01768

(3)

(4)

(1)

(2)

GD(H4DOTC)-231

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

< 0.264 V

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

≥ 0.264 V