Subaru Legacy IV (2008 year). Manual - part 629

GD(H6DO)-136

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

CM:DTC P0459 EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE 

CIRCUIT HIGH

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of the purge control solenoid valve.
Judge as NG when the ECM output level differs from the actual terminal level.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis after starting the engine.

(A)

To canister

(B)

To intake manifold

 

 

Secondary Parameters

Enable Conditions

Battery voltage

t 10.9 V

Elapsed time after starting the engine

t 1 second

(A)

(B)

EN-02197

GD(H6DO)-137

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

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 when malfunction occurs in 2 continuous driving cy-
cles.

• 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

Judgement Value

Malfunction criteria

Threshold value

Duty ratio of “ON”

t 0.25 

Terminal output voltage

High

Judgement Value

Malfunction Criteria

Threshold Value

Terminal output voltage

Low

GD(H6DO)-138

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

CN:DTC P0461 FUEL LEVEL SENSOR “A” CIRCUIT RANGE/PERFORMANCE

1. OUTLINE OF DIAGNOSIS

Detect malfunctions of the fuel level sensor output property.
If the fuel level does not vary in a particular driving condition / engine condition where it should, judge as NG.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(A)

Fuel level

(B)

Resistance

 

 

Secondary Parameters

Enable Conditions

None

 

EN-01734

0

(B)

(A)

GD(H6DO)-139

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

Accumulated amount of intake air

t 330957 g (11672.85 oz)

Max. – min. values of fuel level output

< 2.6 

2 (0.69 US gal, 

0.57 Imp gal)

Battery voltage

t 10.9 V

Engine speed

< 6500 rpm

Elapsed time after starting the engine

t 5000 ms

Judgement Value

Malfunction criteria

Threshold value

Accumulated amount of intake air

t 330957 g (11672.85 oz)

Max. – min. values of fuel level output

t 2.6 

2 (0.69 US gal, 

0.57 Imp gal)

Battery voltage

t 10.9 V

Engine speed

< 6500 rpm

Elapsed time after starting the engine

t 5000 ms