Subaru 2002 IMPREZA Service Manual page 480

ENGINE (DIAGNOSTICS)
3. IDLE FOR 10 MINUTES
NOTE:
Before the diagnosis, drive the vehicle at 4 km/h (6 MPH) or more.
DTC No.
*P0483 Cooling fan function problem
*P0506 Idle control system RPM lower than expected
*P0507 Idle control system RPM higher than expected
4. DRIVE ACCORDING TO THE FOLLOWING DRIVE PATTERN
Vehicle speed km/h (MPH)
96 (60)
65 (40)
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 position sensor circuit range/performance problem (high input)
*P0139 Rear oxygen sensor circuit slow response
*P0301 Cylinder 1 misfire detected
*P0302 Cylinder 2 misfire detected
*P0303 Cylinder 3 misfire detected
*P0304 Cylinder 4 misfire detected
*P1142 Throttle position sensor circuit range/performance problem (low input)
DRIVE CYCLE
Item
50 100
(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.
(F) Accelerate to 97 km/h (60 MPH)
within 10 seconds.
Item
EN-48
Condition
—
—
—
(Seconds)
150
(G) Stop vehicle with throttle fully
closed.Stop vehicle with throttle
fully closed.Stop vehicle with
throttle fully closed.
Condition
—
—
—
—
—
—
—
B2M4775