Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 370

GD(H4DOTC)-232

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EJ:DTC P2022 TUMBLE GENERATED VALVE POSITION SENSOR 2 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)-233

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)-234

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EK:DTC P2088 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

LOW (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of the oil flow control solenoid valve.

Judge as NG when the current is small even though the duty signal is large.

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. 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: 2000 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: 2000 ms

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 10.9 V

Oil flow control solenoid valve control duty

≥ 99.61 %

Oil control solenoid valve control present current

< 0.306 A

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 10.9 V

Target current value of the oil flow control solenoid valve

≥ 0.14 A

|Target current value of the oil flow control solenoid valve – 
oil flow control solenoid valve control current value|

< 0.08 A

GD(H4DOTC)-235

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EL:DTC P2089 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

HIGH (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of oil flow control solenoid valve.

Judge as NG when the current is large even though the duty signal is small.

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. 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: 2000 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: 2000 ms

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 10.9 V

Oil flow control solenoid valve control 
duty

< 0.39 %

Oil control solenoid valve control present 
current

≥ 0.306 A

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 10.9 V

|Target current value of the oil flow con-
trol solenoid valve – oil flow control sole-
noid valve control current value|

< 0.08 A