Subaru LEGACY 2006 Manual page 504

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Diagnostic Trouble Code (DTC) Detecting Criteria
3. ENABLE CONDITION
(Used only for malfunction judgment)
Secondary Parameters
High side
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
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
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
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 only for normality judgment)
Secondary Parameters
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations
Front oxygen (A/F) sensor compensation
coefficient
Battery voltage
4. GENERAL DRIVING CYCLE
After staritng the engine, perform the diagnosis in series while the engine is in a constant operating condition.
Enable Conditions
< 5 times
Not in limit value
> 10.9 V
< 5 times
Not in limit value
> 10.9 V
≥ 10 g/second
< 5 times
Not in limit value
> 10.9 V
< 10 g/second
30 seconds or more
< 5 times
Not in limit value
> 10.9 V
< 10 g/second
30 seconds or more
Experienced
Enable Conditions
< 5 times
Not in limit value
> 10.9 V
GD(H4SO)-67
GENERAL DESCRIPTION