Toyota Tacoma manuals

Toyota Corolla Repair Manual: Catalyst monitor (o2s type)

  1. Preconditions

The monitor will not run unless:

Notice

: * 2002 and later my vehicles: the readiness test can be completed in cold ambient conditions (less than 14f / 10 C), if the drive pattern is repeated a second time after cycling the ignition off.

  1. 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 3 minutes.

Notice

: drive with smooth throttle operation and avoid sudden acceleration.

If iat is less than 50f (10 C) when starting engine, continue to drive vehicle at 40 to 55 mph (64 to 88km/h) for approximately 4 minutes.

  1. 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.

  1. 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).
  2.  Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
  3.  Start the engine and immediately begin driving as directed.
Purpose of the readiness tests
The onboard diagnostic (obd ii) system is designed to monitor the performance of emissionrelated 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:

Key confinement prevention function does not work properly (unlock warning switch circuit)
Circuit description The unlock warning switch turns on when the key is inserted in the ignition key cylinder and the door courtesy switch turns on when the drivers door is opened, and the integration relay monitors both switches conditions. According to these switches conditions, the integ ...

Inspection procedure
Hint: troubleshoot each trouble symptom in accordance with the chart below. 1 Clear dtc Connect the handheld tester or the obd ii scan tool to the dlc 3.  turn the ignition switch on and push the handheld tester or the obd ii scan tool main switch on.  read the dtc . & ...

Handling of hose clamps
Before removing the hose, check the depth of the inserting portion and the clamp position in order to restore it surely.  change a deformed or dented clamp for a new one.  in case of reusing the hose, install the clamp on the hose where it has a clamp track.  for a ...

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