Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 329

GD(H4DOTC)-68

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:

Input voltage (+): 1000 ms

Input voltage (–): 1000 ms

|Input voltage (+) – Input voltage (–)|: 1000 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

Input voltage (+)

< 1.128 V

or

 

Input voltage (–)

< 0.23 V

or

 

|Input voltage (+) – Input voltage (–)|

< 0.644 V

Judgment Value

Malfunction Criteria

Threshold Value

Input voltage (+)

≥ 1.128 V

Input voltage (–)

≥ 0.23 V

|Input voltage (+) – Input voltage (–)|

≥ 0.644 V

GD(H4DOTC)-69

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AM:DTC P0132 O2 SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 1)

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of sensor.

Judge as NG, when the element voltage is out of the specified range.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(A)

Electromotive force

(B)

Air fuel ratio

(C)

Rich

(D)

Lean

 

 

 

 

 

 

 

 

 

 

(1)

Exhaust gas

(2)

ZrO

2

 

 

Secondary Parameters

Enable Conditions

Battery voltage

≥ 10.9 V

EN-09361

(C)

(B)

(D)

(A)

(2)

(1)

(1)

GD(H4DOTC)-70

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:

Input voltage (+): 1000 ms

Input voltage (–): 1000 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

Input voltage (+)

> 3.589 V

or

 

Input voltage (–)

> 3.541 V

Judgment Value

Malfunction Criteria

Threshold Value

Input voltage (+)

≤ 3.589 V

Input voltage (–)

≤ 3.541 V

GD(H4DOTC)-71

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AN:DTC P0134 O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SEN-

SOR 1)

1. OUTLINE OF DIAGNOSIS

Detect open circuits of the sensor.

Judge as NG when the impedance of the element is large.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(A)

Electromotive force

(B)

Air fuel ratio

(C)

Rich

(D)

Lean

 

 

 

 

 

 

 

 

 

 

(1)

Exhaust gas

(2)

ZrO

2

 

 

Secondary Parameters

Enable Conditions

None

 

EN-09361

(C)

(B)

(D)

(A)

(2)

(1)

(1)