Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 376

GD(H4DOTC)-256

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: 100 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: 100 ms

Judgment Value

Malfunction Criteria

Threshold Value

Sensor 1 input voltage

< 0.301 V

Judgment Value

Malfunction Criteria

Threshold Value

Sensor 1 input voltage

≥ 0.301 V

GD(H4DOTC)-257

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

FA:DTC P2123 THROTTLE/PEDAL POSITION SENSOR/SWITCH “D” CIRCUIT 

HIGH INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of accelerator pedal position sensor 1.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Engine control module (ECM)

(3)

Accelerator pedal position sensor 
2 signal

(4)

Accelerator pedal position sensor

(2)

Accelerator pedal position sensor 
1 signal

 

 

 

 

Secondary Parameters

Enable Conditions

Ignition switch

ON

Battery voltage

≥ 6 V

EN-01861

(2)

(3)

(4)

(1)

GD(H4DOTC)-258

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: 32 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: 32 ms

Judgment Value

Malfunction Criteria

Threshold Value

Sensor 1 input voltage

≥ 4.783 V

Judgment Value

Malfunction Criteria

Threshold Value

Sensor 1 input voltage

< 4.783 V

GD(H4DOTC)-259

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

FB:DTC P2127 THROTTLE/PEDAL POSITION SENSOR/SWITCH “E” CIRCUIT 

LOW INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of accelerator pedal position sensor 2.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Engine control module (ECM)

(3)

Accelerator pedal position sensor 
2 signal

(4)

Accelerator pedal position sensor

(2)

Accelerator pedal position sensor 
1 signal

 

 

 

 

Secondary Parameters

Enable Conditions

Ignition switch

ON

Battery voltage

≥ 6 V

EN-01861

(2)

(3)

(4)

(1)