Subaru Legacy 2003 Service Manual page 443

ENGINE (DIAGNOSTICS)
4. DRIVE ACCORDING TO THE FOLLOWING DRIVE PATTERN
Vehicle speed km/h (MPH)
96 (60)
65 (40)
( B )
( A )
0
(A) Idle engine for 1 minute.
(B) Accelerate to 97 km/h (60 MPH)
within 20 seconds.
(C) Drive vehicle at 97 km/h (60 MPH)
for 20 seconds.
DTC No.
*P0121 Throttle/pedal position sensor/switch "A" circuit range/performance
*P0139 O2 Sensor circuit slow response (Bank 1 Sensor 2)
*P0171 System too lean (Bank 1)
*P0172 System too rich (Bank 1)
*P0301 Cylinder 1 misfire detected
*P0302 Cylinder 2 misfire detected
*P0303 Cylinder 3 misfire detected
*P0304 Cylinder 4 misfire detected
*P0400 Exhaust gas recirculation flow
DRIVE CYCLE
( C )
( D ) ( F )
( E )
50
(D) Decelerate with fully closed throt-
tle to 64 km/h (40 MPH).
(E) Drive vehicle at 64 km/h (40 MPH)
for 10 seconds.
Item
EN(H4SO)-46
100 150
(G) Stop vehicle with throttle fully
( G )
(Seconds)
(F) Accelerate to 97 km/h (60 MPH)
within 10 seconds.
closed.
Condition
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EN-00195