Toyota Celica 2005 Repair Manual page 342

CONFIRMATION DRIVING PATTERN
CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when conducting the drive pat-
tern.
(a) Connect the hand−held tester to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the tester ON.
(d) Clear DTCs.
(e) Run the engine at idle for 2 minutes.
(f) Warm up the engine until the engine coolant temperature (ECT) reaches 75°C (167°F).
(g) Allow the vehicle to run at 30 mph (48 km/h) or more for 40 seconds or more.
(h) Stop the vehicle and run the engine at idle for 20 seconds or more.
(i) Repeat the steps (g) and (h) at least 8 times in one driving cycle.
(j) Move the shift lever into the second gear.
(k) Depress the accelerator pedal for at least 10 seconds.
(l) Allow the vehicle to run at 30 mph (48 km/h) or more.
(m) Immediately after step (l), release the accelerator pedal for at least 10 seconds without depressing the
brake pedal (to execute fuel−cut).
(n) Decelerate the vehicle until the vehicle speed drops less than 6 mph (10 km/h).
(o) Repeat the steps (k), (l), (m) and (n) at least twice in one driving cycle.
HINT:
The HO2 sensor operates when the following conditions are met:
2 minutes or more passed after the engine start.
S
The ECT is 75°C (167°F) or more.
S
Cumulative running time at 30 mph (48 km/h) or more exceeds 6 minutes.
S
Closed loop.
S
Fuel−cut is operated for 8 seconds or more.
S
HO2 sensor Monitor Drive Pattern
ECT: 75°C (167°F) or more
Vehicle Speed
30 mph (48 km/h)
Idling
2005 CELICA (RM1131U)
DIAGNOSTICS
At least 8 times
(f)
2 minutes 40 seconds
or more or more
− ENGINE (1ZZ−FE)
Accelerator Pedal
Depressed
(g)
(h)
20 seconds
or more
341
Accelerator Pedal
Released (Fuel−cut)
At least twice
(k), (l)
(m)
(n)
10 seconds
10 seconds
or more
or more
DI−143
6 mph
(10 km/h)
Time
A22574