Check For Dents Or Damage - Toyota 22R-E Service Manual

THREE–WAY CATALYTIC CONVERTER (TWC) SYSTEM
To reduce HC, CO and NOx emissions, they are oxidized, reduced and converted to nitrogen (N 2 ), carbon dioxide (CO 2 )
and water (H 2 ) by the catalyst.
Exhaust Port
HC, CO and NOx
ENGINE – EMISSION CONTROL SYSTEMS
TW C
Oxidation and
reduction
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 catalyst, repair or re–
place it.
EG2–155
Exhaust Gas
CO 2
H 2 0
N 2