Toyota Corolla (E120): Oxygen / af sensor heater monitor

  1. Preconditions

The monitor will not run unless:

  • mil is off
  1.  drive pattern
  1.  connect the obd ii scan tool to the dlc3 to check monitor status and preconditions.
  2.  Start the engine and allow it to idle for 9 minutes.
  3.  Drive the vehicle at 25 mph (40 km/h) or more for at least 2 minutes.
  4.  If the readiness status dose not switch to complete, make sure that the preconditions are met and the ignition switch turned off and then repeat steps (2) and (3).
    Share this page:

    Other materials:

    Inspection procedure
    1 Check p/t squib(rh) circuit(airbag sensor assy center – front seat outer belt assy rh) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the seat belt pretensio ...

    Using a Bluetooth® Phone
    The hands-free system is a function that allows you to use your cellular phone without touching it. This system supports Bluetooth®. Bluetooth® is a wireless data system that allows the cellular phone to wirelessly connect to the hands-free system and make/receive calls. Before making a ph ...

    Diagnostic trouble code chart
    Notice: when removing the part, turn the ignition switch to off. Hint: using sst 09843–18040, it connect the terminal tc and cg of dlc3. If any abnormality is not found when inspecting parts, inspect the ecu and ground points for poor contact. If a malfunction code is displayed during ...