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 TWC
Check for dents or damage.

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