Subaru 2006 Legacy, Руководство пользователя

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GD(H4SO)-119
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Map 2
Add the following value every 512 milliseconds.
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once at a constant speed of 70 km/h (43 MPH).
5. DIAGNOSTIC METHOD
After establishing the execution conditions, calculate the front oxygen (A/F) sensor lambda deviation cumu-
lative value per 128 milliseconds (
Σ
|(sglmd
n
– sglmd
n-1
)|) and rear oxygen sensor output voltage deviation
cumulative value (
Σ
|(ro2sad
n
– ro2sad
n-1
)|), and when the front oxygen (A/F) sensor lambda deviation cu-
mulative value (
Σ
|(sglmd
n
– sglmd
n-1
)|) becomes higher than the predetermined value, calculate the diag-
nostic 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 — 55 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs 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 CONDITION
• 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)
Intake amount of
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)
Total value for
warm-up counter
–5 –5 15 31 46 62 77 92 108 123 127 127
Judgment Value
Malfunction Criteria Threshold Value
Σ
|(ro2sad
n
– ro2sad
n-1
)| /
Σ
|(sglmd
n
–
sglmd
n-1
)|
> 1.0
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