Subaru Legacy IV (2008 year). Manual - part 395

GD(H4DOTC)-30

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

N: DTC P0107 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE 

CIRCUIT LOW INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of intake manifold pressure 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: 500 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)

Output voltage

(B)

Absolute pressure

(1)

Connector

(2)

Terminals

(3)

O-ring

Secondary Parameters

Enable Conditions

None

 

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

d 0.568 V

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

> 0.568 V

EN-01765

(B)

(A)

(2)

(3)

(1)

GD(H4DOTC)-31

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

O: DTC P0108 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE 

CIRCUIT HIGH INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of intake manifold pressure 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: 500 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)

Output voltage

(B)

Absolute pressure

(1)

Connector

(2)

Terminals

(3)

O-ring

Secondary Parameters

Enable Conditions

None

 

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

t 4.590499682 V

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage

< 4.590499682 V

EN-01765

(B)

(A)

(2)

(3)

(1)

GD(H4DOTC)-32

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

P: DTC P0111 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT RANGE/

PERFORMANCE

1. OUTLINE OF DIAGNOSIS

Detect the malfunction of intake air temperature sensor output property.
Judge as NG when the intake air temperature is not varied whereas it seemed to be varied from the viewpoint
of engine condition.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Perform the diagnosis when the vehicle speed condition is met after warming up from a cold condition.

(A)

Air

(1)

Air flow sensor

(3)

Resistance value (

:)

(4)

Intake air temperature °C (°F)

(2)

Intake air temperature sensor

Secondary Parameters

Enable Conditions

Engine coolant temperature at engine 
starting

< 30 °C (86 °F)

Engine coolant temperature

t 95 °C (203 °F)

Battery voltage

t 10.9 V

Continuous time when the vehicle speed 
is less than 60 km/h (37.3 MPH

t 600 s

EN-01767

(3)

(4)

(2)

(1)

(A)

GD(H4DOTC)-33

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgement

Judge as NG when the following conditions are established.

Time Needed for Diagnosis: Less than 1 second
Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cy-
cles.

• Normality Judgement

Judge as OK and clear the NG if the following conditions are established.

Time Needed for Diagnosis: Less than 1 second

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage difference between Max. 
and Min.

< 0.02 V(Equivalent to 
approximately 0.5°C 
(0.9°F) near 25°C)

Judgement Value

Malfunction Criteria

Threshold Value

Output voltage difference between Max. 
and Min.

t 0.02 V