Subaru 2009 IMPREZA, Service Manual

Page: 1686 / 3619

GD(H4DOTC)-98
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BC:DTC P0410 SECONDARY AIR INJECTION SYSTEM
1. OUTLINE OF DIAGNOSIS
Detect NG judging from secondary air delivery pipe pressure, pulse of secondary air delivery pipe pressure
and secondary air pipe airflow amount.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
Perform diagnosis during secondary air pump operation
Secondary Parameters Enable Condition
Pump supply pressure check
Estimate ambient temperature
t
4.4 °C
Battery voltage
t
10.9 V
Barometric pressure
t
75 kPa (563 mmHg, 22.2 inHg)
Engine In operation
Amount of intake air
t
2 g/s (0.07 oz/s)
Secondary air pump Operating
Combination valve Bank open (Except with both
banks closed)
Combination valve one side closed
pulse diagnosis
Estimate ambient temperature
t
4.4 °C
Battery voltage
t
10.9 V
Barometric pressure
t
75 kPa (563 mmHg, 22.2 inHg)
Engine In operation
Feasible area for diagnosis Value of Map 10
t
1
After fuel cut
t
0 ms
Combination valve both closed pulse
diagnosis
Estimate ambient temperature
t
4.4 °C
Battery voltage
t
10.9 V
Barometric pressure
t
75 kPa (563 mmHg, 22.2 inHg)
Engine In operation
Engine load
t
0.2 g/rev (0.01 oz/rev)
After fuel cut
t
1000 ms
Combination valve changeover pres-
sure diagnosis
Estimate ambient temperature
t
4.4 °C
Battery voltage
t
10.9 V
Barometric pressure
t
75 kPa (563 mmHg, 22.2 inHg)
Engine In operation
Amount of intake air > 2 g/s (0.07 oz/s)
and
< 25 g/s (0.88 oz/s)
Engine speed < 4000 rpm
After fuel cut
t
1000 ms
Overflow diagnosis
Estimate ambient temperature
t
4.4 °C
Battery voltage
t
10.9 V
Barometric pressure
t
75 kPa (563 mmHg, 22.2 inHg)
Engine In operation