Toyota Highlander Service Manual: Emission control system (2AZ-FE)

Emission control

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Location

SYSTEM DIAGRAM The emission control system is determined by the ECM based on signals from various sensors. ...

More about Toyota Highlander:

Off-road driving
Your vehicle is not designed to be driven off-road. However, in the event that off-road driving cannot be avoided, please observe the following precautions to help avoid the areas prohibited to vehicles.  Drive your vehicle only in areas where off-road vehicles are permitted to trave ...