2009 SUBARU TRIBECA Back up

GD(H6DO)-24
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are completed.
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
Sub feedback control: Not allowed
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Output voltage level Low

GD(H6DO)-27
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Time Needed for Diagnosis:
3 seconds (Low side)
10 seconds (High side)
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear the NG when both Low side and High side become OK.
Judge as OK when the malfunction criteria below are completed.
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
•Intake manifold pressure sensor process: Estimate the pressure from the engine RPM and size of the
throttle opening. When the throttle opening is also NG, fix at 101 kPa (760 mmHg, 29.8 inHg).
•ISC control: ISC feedback amount calculation prohibited
•Purge control: Not allowed to purge
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Low side
Engine speed < 2600 rpm
Throttle position≥ 17°
Output voltage < 1.99 V
Engine load > 0.87 g/rev
High side
Engine speed 500 ←→ 850 rpm
Throttle position < 3.5°
Output voltage≥ 2.71 V
Engine load < 0.6 g/rev
Judgment Value
Malfunction Criteria Threshold Value
Low side
Engine speed < 2600 rpm
Throttle position≥ 17°
Output voltage≥ 1.99 V
Engine load > 0.87 g/rev
High side
Engine speed 500 ←→ 850 rpm
Throttle position < 3.5°
Output voltage < 2.71 V
Engine load < 0.6 g/rev

GD(H6DO)-49
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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
•Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F).
•ISC Feedback: Calculate target engine RPM as engine coolant temperature 70°C (158°F).
•ISC learning: Not allowed to learn.
•Air conditioner control: Not allowed to turn the air conditioner to ON.
•Radiator fan control: Send the duty signal 50% to the controller.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)

GD(H6DO)-51
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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
•Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F).
•ISC Feedback: Calculate target engine RPM as engine coolant temperature 70°C (158°F).
•ISC learning: Not allowed to learn.
•Air conditioner control: Not allowed to turn the air conditioner to ON.
•Radiator fan control: Send the duty signal 50% to the controller.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)

GD(H6DO)-57
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Timer for diagnosis after engine start
a. Timer stop at fuel cut.
b. During the driving conditions except a) above, timer count up by
64 milliseconds + TWCNT milliseconds at every 64 milliseconds.
TWCNT is defined as follows,
TWCNT = 0 at idle switch ON,
TWCNT show on the following table at idle switch OFF.
Judgment value of timer after engine starting
t = 429.5 – 28.605 × Ti
Ti is the lowest coolant temperature after starting the engine.
Time Needed for Diagnosis: To be determined. (It is varied by the Min. engine coolant temperature and en-
gine conditions such as vehicle speed and engine coolant temperature.)
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
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
•Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F).
•ISC Feedback: Calculate target engine RPM as engine coolant temperature 70°C (158°F).
•ISC learning: Not allowed to learn.
•Air conditioner control: Not allowed to turn the air conditioner to ON.
•Radiator fan control: Send the duty signal 50% to the controller.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Te m p e r a t u r e
°C (°F)
Ve h i c l e s p e e d k m / h ( M P H )
0 (0) 8 (4.97) 16 (9.94) 24 (14.9) 32 (19.9) 40 (24.9) 48 (29.8) 56 (34.8)
–20 (–4) 0 ms 37.2 ms 74.3 ms 111.4 ms 126.7 ms 141.9 ms 163.6 ms 185.3 ms
–10 (14) 0 ms 27.4 ms 54.8 ms 82.2 ms 99.7 ms 117.1 ms 136.0 ms 154.8 ms
0 (32) 0 ms 17.6 ms 35.3 ms 52.9 ms 72.6 ms 92.3 ms 108.3 ms 124.3 ms
10 (50) 0 ms 7.9 ms 15.8 ms 23.7 ms 45.6 ms 67.6 ms 80.7 ms 93.9 ms
20 (68) 0 ms 7.9 ms 15.8 ms 23.7 ms 45.6 ms 67.6 ms 80.7 ms 93.9 ms
Judgment Value
Malfunction Criteria Threshold Value
Engine coolant temperature≥ 20°C (68°F)

GD(H6DO)-67
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform diagnosis only once at a constant speed of 10 to 120 km/h (6.21 to 74.6 MPH) 60 seconds or more
after starting the engine.
(A) Electromotive force (C) Lean (D) Rich
(B) Air fuel ratio

(1) Atmosphere (3) ZrO2(4) Ceramic heater
(2) Exhaust gas
Secondary Parameters Enable Conditions
All secondary parameters enable condi-
tions
1 second or more
Battery voltage > 10.9 V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Closed loop control with main feedback OPERATION
Fr o nt ox yg e n ( A / F) s en so r im pe d an c e 0 ←→ 50 Ω
After engine starting 120 seconds or more
Engine coolant temperature≥ 75°C (167°F)
Engine speed 1000 ←→ 2500 rpm
Ve h i c l e S p e e d 1 0 ←→ 120 km/h
(6.21 ←→ 74.6 MPH)
Intake Air Flow 10 ←→ 40 g/s
Engine load < 0.02 g/rev
Learning value of EVAP conc. during
purge
≤ 0.12
To t a l t i m e o f o p e r a t i n g c a n i s t e r p u r g e 2 0 s e c o n d s o r m o r e
(1)
(2)
(4)
(2)
(3)
EN-01693
(C) (B) (D)
(A)

GD(H6DO)-68
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Calculate faf difference every 128 milliseconds, and the λvalue difference. Calculate the diagnosis value af-
ter calculating 1,640 times (210 seconds).
Judge as NG when the malfunction criteria below are completed. Judge as OK and clear the NG when the
malfunction criteria below are not met.
Time Needed for Diagnosis: 210 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
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
•Front oxygen (A/F) sensor main learning compensation: Not allowed to calculate.
•Rear oxygen sensor sub learning compensation: Not allowed to calculate.
•Purge control: Not allowed to purge
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)
Judgment Value
Malfunction Criteria Threshold Value
parafca = td2faf/td2lmd≥ 0.25
where,
td2faf (N) = td2faf (n–1) + |d2faf (n)|
td2lmd (N) = td2lmd (n–1) + |d2lmd (n)|
add up for a total of 300 seconds
d2faf (n) = (faf (n) – faf (n–1)) – (faf (n–1)
– faf (n–2))

d2lmd (n) = (lmd (n) – lmd (n–1)) – (lmd
(n–1) – lmd (n–2))

faf = main feedback compensation coef-
ficient every 128 milliseconds

lmd = output lambda every 128 millisec-
onds

GD(H6DO)-73
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the following conditions are established and the continuous time is more than specified
time. Judge as OK NG when the following conditions are not established.
Time needed for diagnosis
High side: 2.5 seconds
Low side 1: 20 seconds
Low side 2: 40 seconds
Low side 3: Refer to the map.
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
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
Sub feedback control: Not allowed
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value DTC
High P0138
Maximum output voltage without continu-
ity
≥ 1200 mV P0158
Low side P0137
Maximum output voltage without continu-
ity
< 30 mV P0157
Time for fuel cut (second)Time needed for diag-
nosis (second)
040
240
10 60