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 d squib circuit(airbag sensor assy center – horn button assy) 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 horn button assy. release the airbag activ ...

Using the radio (Multimedia system)
Radio operation Select “AM” or “FM” on the audio source selection screen to begin listening to the radio. Audio control screen Pressing the “AUDIO” button displays the audio control screen from any screens of the selected source. 1 Audio source selection screen appears 2 Preset ...

Circuit description
Refer to dtc p0335 Dtc no. Dtc detection condition Trouble area P0016 Deviation in crankshaft position sensor signal and camshaft position sensor signal (2 trip detection logic) Mechanical system (timing chain has jumped a tooth, chain stretch ...