Subaru Legacy IV (2008 year). Service manual — part 405

GD(H4DOTC)-70

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AK:DTC P0182 FUEL TEMPERATURE SENSOR “A” CIRCUIT LOW INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of fuel temperature sensor.
Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

• Abnormality Judgement

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

Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement

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

(A)

Resistance value (

:)

(B)

Fuel temperature °C (°F)

Secondary Parameters

Enable Conditions

None

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

< 0.343951474 V

Battery voltage

t 10.9 V

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

t 0.343951474 V

Battery voltage

t 10.9 V

EN-01700

(A)

(B)

GD(H4DOTC)-71

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AL:DTC P0183 FUEL TEMPERATURE SENSOR “A” CIRCUIT HIGH INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of fuel temperature sensor.
Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

• Abnormality Judgement

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

Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement

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: Within 1 second

(A)

Resistance value (

:)

(B)

Fuel temperature °C (°F)

Secondary Parameters

Enable Conditions

None

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

t 4.716 V

Battery voltage

t 10.9 V

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

< 4.716 V

Battery voltage

t 10.9 V

EN-01700

(A)

(B)

GD(H4DOTC)-72

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AM:DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT

LOW

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of throttle position sensor 2.
Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

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

Time Needed for Diagnosis: 24 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement
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: 24 ms

(1)

Throttle position sensor 1 signal

(3)

Throttle position sensor

(4)

Engine control module (ECM)

(2)

Throttle position sensor 2 signal

Secondary Parameters

Enable Conditions

Ignition switch

ON

Battery voltage

t 6 V

Judgement Value

Malfunction Criteria

Threshold Value

Sensor 2 input voltage

d 0.920256 V

Judgement Value

Malfunction Criteria

Threshold Value

Sensor 2 input voltage

> 0.920256 V

EN-01859

(1)

(2)

(3)

(4)

GD(H4DOTC)-73

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AN:DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT

HIGH

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of throttle position sensor 2.
Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

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

Time Needed for Diagnosis: 24 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement
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: 24 ms

(1)

Throttle position sensor 1 signal

(3)

Throttle position sensor

(4)

Engine control module (ECM)

(2)

Throttle position sensor 2 signal

Secondary Parameters

Enable Conditions

Ignition switch

ON

Battery voltage

t 6 V

Judgement Value

Malfunction Criteria

Threshold Value

Sensor 2 input voltage

t 4.851 V

Judgement Value

Malfunction Criteria

Threshold Value

Sensor 2 input voltage

< 4.851 V

EN-01859

(1)

(2)

(3)

(4)