Subaru 2009 IMPREZA, Service Manual

Page: 779 / 3619

GD(H4SO)-55
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
After starting the engine, continuously perform the diagnosis with the same engine condition.
Used for abnormality judgement
Secondary Parameters Enable Conditions
High
Secondary air system Not in operation
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations < 5 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage
t
10.9 V
Engine coolant temperature
t
75 °C (167 °F)
Low (1)
Secondary air system Not in operation
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations < 5 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage
t
10.9 V
Engine coolant temperature
t
75 °C (167 °F)
Amount of intake air
t
10 g/s (0.35 oz/s)
Low (2)
Secondary air system Not in operation
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations < 5 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage
t
10.9 V
Engine coolant temperature
t
75 °C (167 °F)
Amount of intake air < 10 g/s (0.35 oz/s)
Current continuation time of the rear oxygen sensor
heater
t
30000 ms
Low (3)
Secondary air system Not in operation
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations < 5 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage
t
10.9 V
Engine coolant temperature
t
75 °C (167 °F)
Amount of intake air < 10 g/s (0.35 oz/s)
Current continuation time of the rear oxygen sensor
heater
t
30000 ms
Fuel cut Experienced
Used for normality judgement
Secondary Parameters Enable Conditions
Secondary air system Not in operation
Closed loop control at the oxygen sensor In operation
Misfire detection every 200 rotations < 5 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage
t
10.9 V
Engine coolant temperature
t
75 °C (167 °F)