Toyota Celica 2005 Repair Manual page 233

DI−34
2. CATALYST MONITOR (O2S TYPE)
40 to 55 mph
(64 to 88 km/h)
35 to 45 mph
(56 to 72 km/h)
Idling
Ignition OFF
(a) Preconditions
The monitor will not run unless:
MIL is OFF.
S
Engine Coolant Temperature (ECT) is 75°C (167°F) or greater.
S
Intake Air Temperature (IAT) is −10°C (14°F) or greater.
S
NOTICE:
The readiness test can be completed in cold ambient conditions (less than −10°C / 14°F), if the drive
pattern is repeated a second time after cycling the ignition off.
(b) Drive Pattern
(1) Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions.
(2) Drive the vehicle at 40 to 55 mph (64 to 88 km/h) for approximately for 3 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden acceleration.
If IAT is less than 10°C (50°F) when engine was started, drive the vehicle at 40 to 55 mph (64 to 88
km/h) for additional 4 minutes.
(3) Drive the vehicle at 35 to 45 mph (56 to 72 km/h) for approximately 7 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden deceleration as much as possible with the
throttle fully closed.
(4) If readiness status does not switch to complete, make sure that the preconditions are met and
the ignition switch is turned OFF and then repeat steps (2) and (3).
(5) Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
(6) Start the engine and immediately begin driving as directed.
2005 CELICA (RM1131U)
DIAGNOSTICS −
3 minutes
Warmed up
232
ENGINE (1ZZ−FE)
7 minutes
A18907