Subaru 2009 IMPREZA, Service Manual

Page: 1749 / 3619

GD(H4DOTC)-161
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITION
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.
Time Needed for Diagnosis:
1. 600 milliseconds
2. 830 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.
Secondary Parameters Enable Conditions
(1) Ignition switch ON
(2) Ignition switch ON
(3) None —
(4) None —
(5) Throttle opening angle
(6) Brake switch (only with cruise control) ON
(7) None —
Judgement Value
Malfunction Criteria Threshold Value
(1) Difference of CPU reading value of the
throttle position sensor signal
d
0.0858 V
(2) Difference of CPU read value of the
accelerator pedal position sensor signal
d
0.35 V
(3) WD pulse from sub CPU WD pulse occur
(4) Communication between CPU Possible to communicate
(5) |Throttle position sensor 1 opening angle
— (Throttle position sensor 1 opening angle
after passing amplifier) 1/4| < 3°
(6) Cruise control cancel signal at brake ON Cruise control cancel sig-
nal ON
(7) Brake switch 1, 2 signal SW 1 and 2 are matched