2009 SUBARU TRIBECA fuel pressure

GD(H6DO)-140
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CF:DTC P0451 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE
SENSOR
1. OUTLINE OF DIAGNOSIS
Detect the tank pressure sensor output property abnormality.
Judge NG when there is no pressure variation, which should exist in the tank, considering the engine status.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
•Always perform the diagnosis continuously in 60 seconds after starting the engine.
•Be sure to check the fuel level and fuel temperature.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the malfunction criteria below are met.
(A) Output voltage (C) To fuel tank (D) To atmosphere
(B) Input voltage

(1) Connector (2) Terminals
Secondary Parameters Enable Conditions
After engine starting 60 seconds or more
Fuel level≥ 9.6 2 (2.45 US gal,
2.11 Imp gal)
Fuel temperature < 35°C (95°F)
Battery voltage≥ 10.9 V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Engine speed < 7000 rpm
EN-03141
(A)
(B)
(2)(1)
(D)
(C)

GD(H6DO)-141
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
If the maximum value – minimum value for the fuel level is less than 2 liters (0.52 US gal, 0.44 Imp gal) every
60 seconds, extend 60 seconds more and make judgment with the maximum and minimum values for the
fuel level in 120 seconds. If a difference does not appear though the time was extended 60 seconds, extend
the time (180, 240, 300 seconds) and continue the judgment. If the maximum value – minimum value for the
fuel level is more than 2 liters (0.52 US gal, 0.44 Imp gal), the diagnosis counter counts up.
Time Needed for Diagnosis: 60 seconds × more than 16 times
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK when the criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
Purge control solenoid valve control: Purge fixed mode is prohibited.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Experienced 10 seconds of purge ON
continuous time

All the following criteria are established. Experienced
Time for establishing the following crite-
ria
10 seconds or more
Canister purge duty > 0.9%
Experienced 10 seconds of purge OFF
continuous time

All the following criteria are established. Experienced
Time for establishing the following crite-
ria
10 seconds or more
Canister purge duty = 0%
Number of times the difference between
the Max. fuel level and the Min. fuel level
ever y 60 seconds is 2 2 (0.52 US gal,
0.44 Imp gal) or more (with enable condi-
tion completed)
≥ 16 times
Maximum - Minimum tank pressure (with
enable condition completed)
< 0.05 kPa (0.375
mmHg, 0.02 inHg)
Maximum - Minimum fuel temperature
(with enable condition completed)
≥ 7°C (44.6°F)
Judgment Value
Malfunction Criteria Threshold Value
Maximum - Minimum tank pressure≥ 0.05 kPa (0.375
mmHg, 0.02 inHg)

GD(H6DO)-142
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CG:DTC P0452 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE
SENSOR LOW INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the fuel tank pressure sensor.
Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes 15 seconds
or more.
Time Needed for Diagnosis: 15 seconds
Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
(A) Output voltage (C) To fuel tank (D) To atmosphere
(B) Input voltage

(1) Connector (2) Terminals
Secondary Parameters Enable Conditions
None
Judgment Value
Malfunction Criteria Threshold Value
Fuel tank pressure < –7.4 kPa (–55.85
mmHg, –2.20 inHg)
Battery voltage≥ 10.9 V
EN-03141
(A)
(B)
(2)(1)
(D)
(C)

GD(H6DO)-143
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Normality Judgment
Judge as OK when the criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
Purge control solenoid valve control: Purge fixed mode is prohibited.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Fuel tank pressure≥ –7.4 kPa (–55.85
mmHg, –2.20 inHg)
Battery voltage≥ 10.9 V

GD(H6DO)-144
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CH:DTC P0453 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE
SENSOR HIGH INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the fuel tank pressure sensor.
Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis when purging.
(A) Output voltage (C) To fuel tank (D) To atmosphere
(B) Input voltage

(1) Connector (2) Terminals
Secondary Parameters Enable Conditions
Ve h i c l e s p e e d≥ 2 km/h (1.24 MPH)
All conditions of EVAP canister purge Completed
Learning value of evaporation gas con-
centration (left and right)
< 0.08
Main feedback compensation coefficient
(left and right)
≥ 0.9
Battery voltage≥ 10.9 V
EN-03141
(A)
(B)
(2)(1)
(D)
(C)

GD(H6DO)-145
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes 15 second
or more.
Time Needed for Diagnosis: 15 seconds
Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
Normality Judgment
Judge as OK when the criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
Purge control solenoid valve control: Purge fixed mode is prohibited.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Fuel tank pressure≥ 7.98 kPa (59.85
mmHg, 2.36 inHg)
Fuel temperature < 35°C (95°F)
Atmospheric pressure 75.1 kPa (563 mmHg,
22.2 inHg)
Judgment Value
Malfunction Criteria Threshold Value
Fuel tank pressure < 7.98 kPa (59.85
mmHg, 2.36 inHg)

GD(H6DO)-163
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CS:DTC P0506 IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED
1. OUTLINE OF DIAGNOSIS
Detect the malfunction that actual engine rpm is not close to target engine rpm during idling. Judge as NG
when actual engine RPM is not close to target engine RPM during idling.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously at idling after warming up engine.
4. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criterion below is 10 seconds × 3
times.
Time Needed for Diagnosis: 10 seconds × 3 times
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear NG when the continuous time of completing the malfunction criterion below becomes
more than the time needed for diagnosis (10 seconds).
5. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
Secondary Parameters Enable Conditions
Engine coolant temperature≥ 75°C (167°F)
Battery voltage≥ 10.9V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Fuel level≥ 9.6 2 (2.54 US gal,
2.11 Imp gal)
After engine starting 10 seconds or more
Feedback in ISC In operation
Lambda value (left and right) 0.9 ←→ 1.1
After air condition switching ON-OFF,
OFF-ON
5.1 seconds or more
After intake manifold pressure changes
more than 4 kPa (30 mmHg, 1.2 inHg)
> 5.1 sec.
After neutral switch ON-OFF change > 5.1 sec.
Ve h i c l e s p e e d 0 k m / h ( 0 M P H )
Judgment Value
Malfunction Criteria Threshold Value
Actual - target engine RPM < –100 rpm
Feedback value for ISC Max.
Judgment Value
Malfunction Criteria Threshold Value
Actual - target engine RPM≥ –100 rpm

GD(H6DO)-165
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CT:DTC P0507 IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED
1. OUTLINE OF DIAGNOSIS
Detect the malfunction that actual engine rpm is not close to target engine rpm during idling. Judge as NG
when actual engine RPM is not close to target engine RPM during idling.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously at idling after warming up engine.
4. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criterion below is 10 seconds × 3
times.
Time Needed for Diagnosis: 10 seconds × 3 times
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear NG when the continuous time of completing the malfunction criterion below becomes
more than the time needed for diagnosis (10 seconds).
5. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
Secondary Parameters Enable Conditions
Engine coolant temperature≥ 75°C (167°F)
Battery voltage≥ 10.9V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Fuel level≥ 9.6 2 (2.54 US gal,
2.11 Imp gal)
After engine starting 10 seconds or more
Feedback in ISC In operation
Lambda value (left and right) 0.9 ←→ 1.1
After air condition switching ON-OFF,
OFF-ON
5.1 seconds or more
After intake manifold pressure changes
to more than 4 kPa (30 mmHg, 1.2 inHg)
> 5.1 sec.
After neutral switch ON-OFF change > 5.1 sec.
Ve h i c l e s p e e d 0 k m / h ( 0 M P H )
Judgment Value
Malfunction Criteria Threshold Value
Actual – Target engine RPM≥ 200 rpm
Feedback value for ISC Min.
Judgment Value
Malfunction Criteria Threshold Value
Actual – Target engine RPM < 200 rpm