Subaru LEGACY 2006 Manual page 610

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Diagnostic Trouble Code (DTC) Detecting Criteria
3. ENABLE CONDITION
Secondary Parameters
(1) Ignition switch
(2) Ignition switch
(3) None
(4) None
(5) Throttle opening angle
(6) Brake switch (only with cruise control) ON
(7) None
(8) Cruise control
4. GENERAL DRIVING CYCLE
(1) — (4): Always perform the diagnosis continuously.
(5): Always perform the diagnosis continuously when idling.
(6): Perform the diagnosis when the brake pedal is depressed.
(7): Always perform the diagnosis continuously.
(8): Always perform the diagnosis continuously when the cruise control pedal is not operating.
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
(1) Difference of CPU reading value of
the throttle position sensor signal
(2) Difference of CPU read value of the
accelerator position sensor signal
(3) WD pulse from sub CPU
(4) Communication between CPU
(5) |Throttle position sensor 1 opening
angle — (Throttle position sensor 1
opening angle after the amplifier)1/4|
(6) Cruise control cancel signal at brake
ON
(7) Brake switch 1, 2 signal
Time Needed for Diagnosis:
1. 250 milliseconds
2. 250 milliseconds
3. 200 milliseconds
4. 200 milliseconds
5. 24 milliseconds
6. 250 milliseconds
7. 200 milliseconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
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
Enable Conditions
ON
ON
—
—
—
OFF
Threshold Value
0.0858 V
0.039 V
WD pulse occur
Possible to communi-
cate
< 3°
Cruise control cancel
signal ON
SW 1 and 2 are
matched
GD(H4SO)-173
GENERAL DESCRIPTION