Subaru IMPREZA GD 2007 Series Manual page 1975

asieps_tobira_IM_US.book 184 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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
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.
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 pedal position sensor signal
(3) WD pulse from sub CPU
(4) Communication between CPU
(5) Difference of signal on connection of
amplifier
(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 CONDITIONS
• When the OK driving cycle is completed three times in a row
• When "Clear Memory" is performed
8. FAIL SAFE
Stop the continuity to the electronic throttle control motor. (Throttle opening is fixed to 6°.)
Enable Conditions
ON
ON
—
—
—
Threshold Value
Within 0.858 V
Within 0.038 V
WD pulse occur
Possible to communi-
cate
within 4 times ±3°
Cruise control cancel
signal ON
SW 1 and 2 are
matched
GD(H4DOTC)-184