Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Catalyst system efficiency below threshold

Toyota Corolla (E120): Catalyst system efficiency below threshold

Dtc p0420 catalyst system efficiency below threshold (bank 1)

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Inspection procedure
1 Check operation(stop lamp swtich assy) Check that the stop light comes on when the brake pedal is depressed, and turns off when the brake pedal is released. 2 Input signal check See input signal check on page 05–745.  check the indicator light when the brake pedal ...

Abbreviations used in this manual
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Using the voice command system (Multimedia system)
Voice command system The voice command system enables the hands-free system to be operated using voice commands. Operations of the voice command system can be performed by selecting the menu corresponding to each function on the screen. Even if any menu is selected, commands displayed on all ...