Subaru Legacy IV (2008 year). Manual - part 445

GD(H4DOTC)-230

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EM:DTC P2433 SECONDARY AIR INJECTION SYSTEM AIR FLOW /PRESSURE 

SENSOR CIRCUIT HIGH

1. OUTLINE OF DIAGNOSIS

Judge as NG if out of specification.

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. 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

Secondary Parameters

Enable Conditions

None

 

Judgement Value

Malfunction Criteria

Threshold Value

Ignition switch

ON

Output voltage

> 4.921 V

Judgement Value

Malfunction Criteria

Threshold Value

Ignition switch

ON

Output voltage

d 4.921 V

GD(H4DOTC)-231

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EN:DTC P2440 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE 

STUCK OPEN (BANK1)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P0410. <Ref. to GD(H4DOTC)-94, DTC P0410 SECONDARY AIR
INJECTION SYSTEM, Diagnostic Trouble Code (DTC) Detecting Criteria.>

EO:DTC P2441 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE 

STUCK CLOSED (BANK1)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P0410. <Ref. to GD(H4DOTC)-94, DTC P0410 SECONDARY AIR
INJECTION SYSTEM, Diagnostic Trouble Code (DTC) Detecting Criteria.>

EP:DTC P2442 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE 

STUCK OPEN (BANK2)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P0410. <Ref. to GD(H4DOTC)-94, DTC P0410 SECONDARY AIR
INJECTION SYSTEM, Diagnostic Trouble Code (DTC) Detecting Criteria.>

EQ:DTC P2443 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE 

STUCK CLOSED (BANK2)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P0410. <Ref. to GD(H4DOTC)-94, DTC P0410 SECONDARY AIR
INJECTION SYSTEM, Diagnostic Trouble Code (DTC) Detecting Criteria.>

GD(H4DOTC)-232

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

ER:DTC P2444 SECONDARY AIR INJECTION SYSTEM PUMP STUCK ON

1. OUTLINE OF DIAGNOSIS

Detect the secondary air pump malfunction (always ON).
After the secondary air pump turns to OFF, judge as NG if the secondary air pipe pressure is higher than that
before the secondary air pump operation.

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. 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: 8000 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: 8000 ms

Secondary Parameters

Enable Conditions

Battery voltage

t 7 V

Engine

In operation

Judgement Value

Malfunction Criteria

Threshold Value

Time since secondary air control com-
pletion

t 3000 ms

 and

d 8000 ms

Secondary air pipe pressure – Second-
ary air pipe pressure before operation

> 6.7 kPa (50 mmHg, 
2 inHg)

Judgement Value

Malfunction Criteria

Threshold Value

Time since secondary air control com-
pletion

t 3000 ms

 and

d 8000 ms

Secondary air pipe pressure – Second-
ary air pipe pressure before operation

d 6.7 kPa (50 mmHg, 
2 inHg)

FU(H6DO)-2

General Description

FUEL INJECTION (FUEL SYSTEMS)

1. General Description

A: SPECIFICATION

Fuel tank

Capacity

64 

2 (16.9 US gal, 14.1 Imp gal)

Install locations

Under rear seat

Fuel pump

Type

Impeller

Shutoff discharge pressure

550 — 850 kPa (5.61 — 8.67 kg/cm

2

, 79.8 — 123.3 psi)

Discharge rate

155

2 (41 US gal, 34.1 Imp gal)/h or more

[12 V at 300 kPa (3.06 kg/cm

2

, 43.5 psi)]

Fuel filter

In-tank type