Catalytic Converter: Service and Repair
Warm Up TWC Removal/InstallationFRONT (BANK 2)
1. Remove the condenser fan shroud.
2. Disconnect the front air fuel ratio (A/F) sensor connector (Bank 2, Sensor 1) and front secondary heated oxygen sensor (secondary HO2S) connector (Bank 2, Sensor 2).
3. Remove the front (Bank 2) WU-TWC.
4. Install the front (Bank 2) WU-TWC, and tighten the nuts in a crisscross pattern in two or three steps
5. Install the other parts in the reverse order of removal.
REAR (BANK 1)
1. Disconnect the rear air fuel ratio (A/F) sensor connector (Bank 1, Sensor 1) and rear secondary heated oxygen sensor (secondary HO2S) connector (Bank 1, Sensor 2).
2. Remove the rear (Bank 1) WU-TWC bracket, then remove the rear WU-TWC.
3. Install the rear (Bank 1) WU-TWC, and tighten the nuts in a crisscross pattern in two or three steps.
4. Install the other parts in the reverse order of removal.