Catalytic Converter: Inspection

TWC - Remove
- Remove the warm up TWC - Go to: Warm Up TWC Removal and Installation .
- Remove the under-floor TWC - Go to: Under-Floor TWC Removal and Installation .

TWC - Inspect

Courtesy of HONDA, U.S.A., INC.

1. Plug up the hole(s) (A) other than main exhaust gas route.

2. Using a flashlight (B) visually check for plugging, melting, or cracking of the catalyst. Replace the TWC if any of the visible area is damaged or plugged.