NOTE: If the warm up TWC is damaged internally, inspect the under-floor TWC for debris.
Raise the vehicle on a lift.
Remove the bolts (A).

Lower the vehicle.
Remove the A/F sensor (Sensor 1).
Remove the EGR pipe.
Remove the cover (A).

Remove the bolts (B) and the nuts (C).
Remove the WU-TWC (D).
Install the parts in the reverse order of removal with new gaskets (E).
Protecting Adults and Teens
Introduction
The following pages provide instructions on how to properly protect the driver,
adult passengers, and teenage children who are large enough and mature enough to
drive or ride in the ...
Engine Number
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Cylinder Head Inspection for Warpage
Remove the cylinder head.
Inspect the camshaft.
Check the cylinder head for warpage. Measure along the edges, and three
ways across the center:
If wa ...