Celica GT-S L4-1.8L (2ZZ-GE) (2000)
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Catalytic Converter: Testing and Inspection
THREE-WAY CATALYTIC CONVERTER (TWC) SYSTEM
INSPECTION
1. CHECK TWC FOR DENTS OR DAMAGE
If any port of the heat insulator is damaged or dented to the extent that it contacts the three-way catalytic converter, repair or replace it.
2. CHECK EXHAUST PIPE CONNECTIONS FOR LOOSENESS OR DAMAGE
3. CHECK EXHAUST PIPE CLAMPS FOR WEAKNESS, CRACKS OR DAMAGE
4. CHECK HEAT INSULATOR FOR DAMAGE
5. CHECK FOR ADEQUATE CLEARANCE BETWEEN EXHAUST SYSTEM AND HEAT INSULATOR ON THE BODY
