Toyota Corolla (E120): Components

Replacement

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    Emission inspection and maintenance (I/M) programs
    Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction indicator lamp comes on The OBD system determines that a problem exists somewhere in the emission cont ...

    Circuit description
    When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations of hc passing through the catalyst also cause to temperature of the catalyst to ...

    Removal & installation and disassembly & re
    1. Remove bench type rear seat cushion assy (, 72–8) 2. Remove rear floor service hole cover 3. Work for preventing gasoline from spilling out  start the engine.  after the engine has stopped on the its own, turn the ignition switch to lock. 4. Disconnect fuel tank main tu ...