Catalytic Converter: Testing and Inspection

THREE-WAY CATALYTIC CONVERTER (TWC) SYSTEM

ON-VEHICLE INSPECTION
1. INSPECT EXHAUST PIPE ASSEMBLY
a. Check the connections for looseness or damage.
b. Check the clamps for weakness, cracks or damage.

2. INSPECT WU-TWC

Check for dents or damage.

If any part of the protector is damaged or dented to the extent that it contacts the WU-TWC, repair or replace it.

3. INSPECT WU-TWC HEAT INSULATOR
a. Check the heat insulator for damage.
b. Check for adequate clearance between the catalytic converter and heat insulator.