Toyota Corolla Repair Manual: Catalyst monitor (o2s type)
- Preconditions
The monitor will not run unless:
- mil is off.
- Engine coolant temperature (ect) is 176°f (80 °C) or greater.
- Intake air temperature (iat) is 14°f (–10 °C) or greater.*
Notice
: * 2002 and later my vehicles: the readiness test can be completed in cold ambient conditions (less than 14°f / –10 °C), if the drive pattern is repeated a second time after cycling the ignition off.
- Drive pattern
- connect the obd ii scan tool to the dlc3 to check monitor status and preconditions.
- Drive the vehicle at 40 to 55 mph (64 to 88 km/h) for approximately 3 minutes.
Notice
: drive with smooth throttle operation and avoid sudden acceleration.
If iat is less than 50°f (10 °C) when starting engine, continue to drive vehicle at 40 to 55 mph (64 to 88km/h) for approximately 4 minutes.
- 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.
- If readiness status dose 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).
- Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
- Start the engine and immediately begin driving as directed.
Purpose of the readiness tests
The on–board diagnostic (obd ii) system is designed to monitor the
performance of emission–related
components and report any detected abnormalities in the form of diagnostic
trouble codes
...
Evap monitor (vacuum pressure monitor)
Notice:
a cold soak must be performed prior to conducting the drive pattern to complete
the internal pressure
readiness monitor.
Cold soak preconditions
The monitor will not run unless:
...
Other materials:
License plate lamp assy
Replacement
1. Remove luggage compartment lock cylinder & key set
2. Remove luggage compartment door garnish outside
3. Remove license plate lamp assy
Pull the license plate light assy to the side of vehicle as
shown in the illustration and release the claw.
disconnect the c ...
Overhaul
1. Precaution
2. Disconnect battery negative terminal
3. Inspect place front wheels facing straight ahead
4. Remove horn button assy
Notice:
if the airbag connector is disconnected with the ignition
switch being at on, dtcs will be recorded.
using a torx socket wrench, loosen the ...
Inspection procedure
Hint:
hand–held tester only:
narrowing down the trouble area is possible by performing ”a/f control” active
test (heated oxygen
sensor or other trouble areas can be distinguished).
Perform active test using hand–held tester (a/f control).
Hint:
”a/f control” is the active test which cha ...