Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    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 c ...

    Refueling
    Opening the fuel tank cap Perform the following steps to open the fuel tank cap: Before refueling the vehicle ● Close all the doors and windows, and turn the engine switch off. ● Confirm the type of fuel. ■Fuel types Unleaded gasoline (Octane rating 87 [Research Octane Number ...

    On–vehicle inspection
    1. Check battery electrolyte level Check the electrolyte quantity of each cell (maintenance–free battery).  If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.  check the electrolyte quantity of each cell ...