SUBARU TRIBECA 2009 1.G Service Workshop Manual

GD(H6DO)-119
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
If a condition where the number of camshaft position sensor signals for 2 engine revolutions is not 3 times,
continues for more than 3 seconds.
Judge as OK and clear the NG when the following criteria are not established.
Time Needed for Diagnosis: 8 seconds
Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
Normality Judgment
Judge as OK and clear the NG when the malfunction 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
Make the oil flow control solenoid valve driving duty a predetermined value (9.36%).
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Secondary Parameters Enable Conditions
Battery voltage≥ 8 V
Judgment Value
Malfunction Criteria Threshold Value
Amount of camshaft sensor signal during
2 revs.
≠ 3
Judgment Value
Malfunction Criteria Threshold Value
Camshaft position sensor signal = 3

GD(H6DO)-120
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CA:DTC P0345 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 2)
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0340. <Ref. to GD(H6DO)-118, DTC P0340 CAMSHAFT PO-
SITION SENSOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC) Detecting
Criteria.>

GD(H6DO)-121
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CB:DTC P0420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the deterioration of the catalyst function.
Though the rear oxygen sensor output would change slowly with a new catalyst, the sensor output with a de-
teriorated catalyst becomes high and the inversion time is shortened.
For this reason, the catalyst diagnosis is carried out by monitoring the rear oxygen sensor output and com-
paring it with the front oxygen A/F sensor output.
2. COMPONENT DESCRIPTION
(A) Normal (C) Output waveform from the front
oxygen (A/F) sensor
(D) Output waveform from the rear
oxygen sensor(B) Deterioration

(1) Front oxygen (A/F) sensor (2) Rear oxygen sensor (3) Catalytic converter
EN-01713
(A)
(B)
(C)(D)
(1)(2)
(3)
(3)

GD(H6DO)-122
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITIONS
Map 2
Add the following value every 512 milliseconds.
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once at a constant 70 km/h (43 MPH) or higher.
5. DIAGNOSTIC METHOD
After the execution criteria are established, calculate the output fluctuation value of front oxygen (A/F) sensor
(averaged for the right and left) and output fluctuation value of rear oxygen sensor. Calculate the diagnosis
value when the front oxygen (A/F) sensor output fluctuation value is more than specified value. A/F response
properties and diagnosis values are parameters for the judgment value.
Judge as NG when the malfunction criteria below are met. Judge as OK if the criteria below are not met.
Time Needed for Diagnosis: 30 to 55 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Engine coolant temperature≥ 75°C (167°F)
Catalyst warm-up counter (Map 2)≥ 8000
Misfire detection every 200 rotations < 5 times
Sub feedback In operation
Evaporative system diagnosis Not in operation
Time of difference (< 0.10) between
actual and target lambda
1000 milliseconds or
more
Ve h i c l e s p e e d≥ 70 km/h (43 MPH)
Amount of intake air 15 ←→ 50 g (0.53
←→ 1.76 oz)/s
Rear O2 output change from lower than
to higher than 600 mV
Experienced after fuel
cut
Load change absolute value < 0.02 g (0.007 oz)/rev
To t a l t i m e o f c a n i s t e r p u r g e o p e r a t i o n≥ 5 sec.
Learning value of evaporation gas den-
sity
≤ 0.12
After engine starting≥ 205 sec.
Amount of intake
air (g(oz)/s)0 (0)3.2
(0.113)
6.4
(0.226)
9.6
(0.339)
12.8
(0.451)
16
(0.564)
19.2
(0.677)
22.4
(0.790)
25.6
(0.903)
28.8
(1.016)
32
(1.129)
35.2
(1.242)
To t a l v a l u e f o r
warm-up counter–19 –8 11 19 30 44 61 81 104 130 159 161
Judgment Value
Malfunction Criteria Threshold Value
Accumulated variation of output voltage
of rear oxygen sensor per 32 millisec-
onds × 4 divided by accumulated varia-
tion of lambda of front oxygen (A/F)
sensor per 32 milliseconds × 4
≥ 30

GD(H6DO)-123
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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
None
9. ECM OPERATION AT DTC SETTING
•Memorize the freeze frame data. (For test mode $02)
•Memorize the diagnostic value and trouble standard value. (For test mode $06)

GD(H6DO)-124
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CC:DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECT-
ED (SMALL LEAK)
1. OUTLINE OF DIAGNOSIS
Check if there is a leakage in fuel system or not, and perform the function diagnosis of valve.
In this system diagnosis, check for leakage and valve function is conducted by changing the fuel tank pres-
sure and monitoring the pressure change using the fuel tank pressure sensor.
When in 0.04 inch diagnosis, perform in the order of mode Z → mode A → mode B → mode C and mode D;
When in 0.02 inch diagnosis, perform in the order of mode A → mode B → mode C → mode D and mode E.
(1) Fuel gauge (6) Canister (10) Fuel tank
(2) Intake manifold (7) Drain valve (11) Fuel cut valve
(3) Throttle body (8) Fuel temperature sensor (12) Fuel tank pressure sensor
(4) Purge control solenoid valve (9) Fuel level sensor (13) Vent valve
(5) Engine control module (ECM)
EN-03722
(1)(2)(3)
(4)
(5)
(6)
(8)
(12)
(9)(10)
(13)
(11)
(7)

GD(H6DO)-125
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
0.04-inch Diagnosis
Mode Mode Description Diagnosis Period
Mode Z
(Purge control solenoid valve open-
ing failure diagnosis)
Diagnosis starts when there is a change in fuel tank pressure
amount. Purge control solenoid valve open trouble diagnosis
begins.
3 — 16 seconds
Mode A
(Estimated evaporation amount)Calculate the tank pressure change amount (P1). 10 seconds
Mode B
(Sealed negative pressure, large
leakage judgment)
Introduce the intake manifold pressure to the fuel tank and reduce
the tank pressure to the desired value. If the tank pressure cannot
be reduced, it is diagnosed as large leak.
5 — 25 seconds
Mode C
(Pressure increase check,
advanced OK judgment)
Wait until the tank pressure retur ns to the targeted pressure (star t
level of P2 calculation). If the tank pressure does not become the
value, make advanced OK judgment.
1 — 15 seconds
Mode D
(Negative pressure variation mea-
surement, evaporation leakage
diagnosis)
Calculate the tank pressure variation (P2) and obtain the diagnos-
tic value using P1 found in Mode A.
Pe r fo r m t he eva po ra ti o n d ia g no si s u si n g t h e d ia g no st i c val u e.10 seconds
Mode Table for Evaporative Emission Control System Diagnosis
Mode When normal Diagnostic item DTC
Mode ZRoughly same as atmospheric pressure
(Same pressure as 0 kPa (0 mmHg, 0 inHg))
Purge control solenoid valve is judged to
be open.P0457
Mode APressure is in proportion to amount of evap-
orative emission.——
Mode BNegative pressure is formed due to intake
manifold negative pressure
Large leakP0457
Mode C Reaches target pressure — —
Mode D Pressure change is small. EVAP system large leak [1.0 mm (0.04 in)] P0442
ModeZModeAModeBModeCModeD
OKOKOKOKOK
NG
Early OK
Large leakage judgement
Cancel
ModeZExtend
NG
NG
OK
END
EN-02872

GD(H6DO)-126
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
0.02-inch Diagnosis
Mode Mode Description Diagnosis Period
Mode A
(0 Point Compensation)
When pressure in tank is high, wait for 0 point (Near 0 kPa (0
mmHg, 0 inHg)) to return.0 — 12 seconds
Mode B
(Negative pressure introduced)
Decrease the pressure in the tank to the target value by introduc-
ing the intake hose pressure to the fuel tank.0 — 27 seconds
Mode C
(Negative pressure maintained)
Wa i t u nt i l t h e t a nk pr e ss ur e r et u r ns to t he t ar g e t ( s ta r t leve l o f P 2
calculation).0 — 20 seconds
Mode D
(Negative pressure change calcu-
lated)
Calculate the time it takes for the tank pressure to return to the P2
calculation complete pressure. If the tank pressure does not
return to the P2 calculation complete pressure, make advanced
OK judgment.
0 — 200 seconds
Mode E
(Evaporation generated amount cal-
culation)
Calculate the amount of evaporation (P1).
0 — 280 seconds
EN-03044
ModeAModeBModeCModeD
OKOKOK
Early OK 1
Cancel
Cancel
END
Cancel
Cancel
Early OK 2
OKModeE
Cancel
OK

GD(H6DO)-127
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
2. ENABLE CONDITIONS
0.04-inch Diagnosis
Secondary Parameters Enable Conditions
Battery voltage≥ 10.9 V
Barometric pressure≥ 75.1 kPa (563
mmHg, 22.2 inHg)
To t a l t i m e o f c a n i s t e r p u r g e o p e r a t i o n 1 2 0 s e c o n d s o r m o r e
After engine starting 851 seconds or more
Learning value of evaporation gas den-
sity
≤ 0.08
Engine speed 1050 ←→ 7000 rpm
Fuel tank pressure≥ –4.0 kPa (–30
mmHg, –1.18 inHg)
Intake manifold relative vacuum (relative
pressure)
< –26.7 kPa (–200
mmHg, –7.87 inHg)
Ve h i c l e s p e e d≥ 32 km/h (20 MPH)
Fuel level 9.6 ←→ 54.4 2 (2.53
←→ 14.37 US gal,
2.11 ←→ 12.00 Imp
gal)
Closed air/fuel ratio control In operation
Fuel temperature – 10 ←→ 45°C (14
←→ 113°F)
Intake air temperature≥ –10°C (14°F)
Pressure change per second < 0.23 kPa (1.7
mmHg, 0.023 inHg)
Minimum pressure change value every
one second – Maximum pressure
change value
< 0.23 kPa (1.7
mmHg, 0.023 inHg)
Change of fuel level < 2 2 (2.1 US qt, 1.76
Imp qt)/131 millisec-
onds
Air fuel ratio 0.76 — 1.25

GD(H6DO)-128
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
0.02-inch Diagnosis
Secondary Parameters Enable Conditions
(At starting a diagnosis)
Evap. diagnosis Incomplete
Battery voltage≥ 10.9 V
Atmospheric pressure≥ 75.1 kPa (563
mmHg, 22.2 inHg)
Time since last incomplete diagnosis
event of 0.02-inch leakage
> 600 seconds (Can-
celed with the mode
other than mode A)
> 120 seconds (Can-
celed with mode A)
To t a l t i m e o f c a n i s t e r p u r g e o p e r a t i o n 1 2 0 s e c o n d s o r m o r e
After engine starting 120 seconds or more
Fuel temp. –10 ←→ 50°C (14
←→ 122°F)
Fuel level 9.6 ←→ 54.4 2
(2.54 ←→ 14.37 US
gal, 2.11 ←→ 12.00
Imp gal)
Intake manifold relative vacuum (relative
pressure)
< –8.0 kPa (–60
mmHg, –2.36 inHg)
Fuel tank pressure –0.53 — 0.39 kPa (–4
— 2.9 mmHg, –0.16 —
0.12 inHg)
Ve h i c l e s p e e d≥ 30 km/h (62 MPH)
Closed air/fuel ratio control In operation
Engine speed 500 — 7000 rpm
(During diagnosis)
Change of fuel level≤ 5 2 (1.3 US qt, 1.1
Imp qt)
Pressure change every one second < 0.04 kPa (0.3
mmHg, 0.01 inHg)
Minimum pressure change value every
one second – Maximum pressure
change value every one second (Mode
A)
< 0.06 kPa (0.45
mmHg, 0.018 inHg)
Minimum pressure change value every
one second – Maximum pressure
change value every one second (Mode
D)
< 0.08 kPa (0.564
mmHg, 0.024 inHg)
Atmospheric pressure change (Mode D) –0.47 ←→ 0.32 kPa (–
3.5 ←→ 2.4 mmHg, –
0.14 ←→ 0.09 inHg)
Atmospheric pressure change (Mode E) –0.32 ←→ 0.32 kPa (–
2.4 ←→ 2.4 mmHg, –
0.09 ←→ 0.09 inHg)