Three–Way Catalytic Converter (Twc) System; Exhaust Pipe Assembly Inspection; Catalytic Converter Inspection - Toyota 22R-E Service Manual

To reduce HC, CO and NOx emissions, they are oxidized, reduced and converted to nitrogen (N
(C0 ) and water (H O) by the catalytic converter.
2 2
Exhaust Port
ENGINE – EMISSION CONTROL SYSTEMS
THREE–WAY CATALYTIC
CONVERTER (TWC) SYSTEM
TWC

EXHAUST PIPE ASSEMBLY INSPECTION

1. CHECK CONNECTIONS FOR LOOSENESS OR
DAMAGE
2. CHECK CLAMPS FOR WEAKNESS, CRACKS OR
DAMAGE

CATALYTIC CONVERTER INSPECTION

CHECK FOR DENTS OR DAMAGE
If any part of the protector is damaged or dented to
the extent that it contacts the catalytic converter,
repair or replace it.
EG1–99
), carbon dioxide
2
Exhaust Gas