Subaru LEGACY 2006 Manual page 499

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
2. COMPONENT DESCRIPTION
(2)
(4)
(1) Atmosphere
(2) Exhaust gas
(3) ZrO
2
(4) Ceramic heater
3. ENABLE CONDITION
Secondary Parameters
All secondary parameters enable condi-
tions
Battery voltage
Atmospheric pressure
Closed loop control with main feedback
Front oxygen (A/F) sensor impedance
After engine starting
Engine coolant temperature
Engine speed
Vehicle speed
Amount of intake air
Engine load change during 0.5 engine
revs.
Learning value of EVAP conc. during
purge
Total time of operating canister purge
4. GENERAL DRIVING CYCLE
Perform diagnosis only once at a constant speed of 10 to 120 km/h (6.21 to 74.6 MPH) after 120 seconds or
more have passed after the engine starting.
(3)
(1)
(2)
(A) Electromotive force
(B) Air fuel ratio
(C) Lean
(D) Rich
Enable Conditions
1 second or more
> 10.9 V
> 75.1 kPa (563
mmHg, 22.2 inHg)
Operating
0 — 50 Ω
120 seconds or more
≥ 75°C (167°F)
1000 — 3200 rpm
10 — 120 km/h (6.21
— 74.6 MPH)
10 — 40 g (0.35 —
1.41 oz)/s
≤ 0.02 g (0.001 oz)/rev
≤ 0.2
20 seconds or more
GD(H4SO)-62
(A)
(C) (B) (D)
EN-01693