Catalyst Location
Fig 1: Exhaust System With Air Fuel Ratio/Oxygen Sensor Locations (w/ Secondary Air Injection System)
TEXT IN ILLUSTRATION
| *A | w/ Secondary Air Injection System | - | - |
| *1 | Air Fuel Ratio Sensor (for Bank 1 Sensor 1) | *2 | Air Fuel Ratio Sensor (for Bank 2 Sensor 1) |
| *3 | Heated Oxygen Sensor (for Bank 1 Sensor 2) | *4 | Heated Oxygen Sensor (for Bank 2 Sensor 2) |
| *5 | TWC: Front Catalyst | *6 | TWC: Rear Catalyst |
| *7 | Exhaust Manifold Sub-Assembly RH | *8 | Exhaust Manifold Sub-Assembly LH |
| *9 | Front Exhaust Pipe Assembly | *10 | Front No. 2 Exhaust Pipe Assembly |
| *11 | Center Exhaust Pipe Assembly | *12 | Tail Exhaust Pipe Assembly |
NOTE:
- When outputting DTC P0420 replace the exhaust manifold sub-assembly RH (*7) and the front exhaust pipe assembly (*9) together when catalyst replacement is necessary (Excluding air fuel ratio sensor *1 and heated oxygen sensor *3).
- When outputting DTC P0430 replace the exhaust manifold sub-assembly LH (*8) and the front No. 2 exhaust pipe assembly (*10) together when catalyst replacement is necessary (Excluding air fuel ratio sensor *2 and heated oxygen sensor *4).
Fig 2: Exhaust System With Air Fuel Ratio/Oxygen Sensor Locations (w/o Secondary Air Injection System)
TEXT IN ILLUSTRATION
| *A | w/o Secondary Air Injection System | - | - |
| *1 | Air Fuel Ratio Sensor (for Bank 1 Sensor 1) | *2 | Air Fuel Ratio Sensor (for Bank 2 Sensor 1) |
| *3 | Heated Oxygen Sensor (for Bank 1 Sensor 2) | *4 | Heated Oxygen Sensor (for Bank 2 Sensor 2) |
| *5 | TWC: Front Catalyst | *6 | TWC: Rear Catalyst |
| *7 | Exhaust Manifold Sub-Assembly RH | *8 | Exhaust Manifold Sub-Assembly LH |
| *9 | Front Exhaust Pipe Assembly | *10 | Front No. 2 Exhaust Pipe Assembly |
| *11 | Center Exhaust Pipe Assembly | *12 | Tail Exhaust Pipe Assembly |
NOTE:
- When outputting DTC P0420 replace the exhaust manifold sub-assembly RH (*7) and the front exhaust pipe assembly (*9) together when catalyst replacement is necessary (Excluding air fuel ratio sensor *1 and heated oxygen sensor *3).
- When outputting DTC P0430 replace the exhaust manifold sub-assembly LH (*8) and the front No. 2 exhaust pipe assembly (*10) together when catalyst replacement is necessary (Excluding air fuel ratio sensor *2 and heated oxygen sensor *4).