Honda Fit: Fuel and Emissions System Description - Catalytic Converter System

Catalytic Converter   System

Warm Up Three Way Catalytic Converter   (WU-TWC) and Under-floor Three Way Catalytic Converter (Under-floor TWC)

The WU-TWC and the under-floor TWC convert hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) in the exhaust gas to carbon dioxide (CO2), nitrogen (N2), and water vapor.

WU-TWC (ATTACHED TO THE CYLINDER HEAD)

UNDER-FLOOR TWC

See also:

MTF Inspection and Replacement (M/T)
Park the vehicle on level ground, and turn the engine off. Raise the vehicle on a lift, and make sure it is securely supported. Remove the splash shield. ...

Removal (Part -3)
Remove the secondary HO2S harness bracket (A) from the steering gearbox. NOTE: Do not disconnect the secondary HO2S 4P connector and the secondary HO2S. ...

Clutch Interlock Switch Replacement (M/T)
M/T model Disconnect the 2P connector (A) from the clutch interlock switch. Loosen the locknut (B), then remove the clutch interlock switch (C). Install the clutch int ...