Subaru IMPREZA GD 2007 Series Manual page 1857

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITION
Used for abnormality judgment
Secondary Parameters
High side
Secondary air system
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
Low side 1
Secondary air system
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
Amount of intake air
Low side 2
Secondary air system
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
Amount of intake air
Current continuation time of the rear oxy-
gen sensor heater
Low side 3
Secondary air system
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
Amount of intake air
Current continuation time of the rear oxy-
gen sensor heater
Fuel cut
Used for normality judgment
Secondary Parameters
Secondary air system
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
Enable Conditions
Not in operation
< 5 times
Not in limit value
> 10.9 V
Not in operation
< 5 times
Not in limit value
> 10.9 V
≥ 10 g (0.35 oz)/sec-
ond
Not in operation
< 5 times
Not in limit value
> 10.9 V
< 10 g (0.35 oz)/sec-
ond
25 seconds or more
Not in operation
< 5 times
Not in limit value
> 10.9 V
< 10 g (0.35 oz)/sec-
ond
25 seconds or more
Experienced
Enable Conditions
Not in operation
< 5 times
Not in limit value
> 10.9 V
GD(H4DOTC)-66