Catalytic Converter: Testing and Inspection

WARM-UP THREE-WAY CATALYTIC CONVERTER (WU-TWC) INSPECTION [L3 WITH TC]

CAUTION:
- Perform the following procedures, DTC P0421 is indicated only.

1. Connect the M-MDS to the DLC-2.






2. Start the engine and warm it up to normal operating temperature.

3. Turn off the engine.

4. Verify that the engine compression is within the specification. Testing and Inspection

- If the compression pressure is not within the specification, repair or replace the malfunction part.

5. Drive the vehicle for 10 min at65-96 km/h {40-60 mph} to allow the WU-TWC to reach operating

6. Stop the vehicle and leave it in a safe space.

7. Access Test ID 10:21:80 on the "Diagnostic Monitoring Test Result" function.

8. Verify that the test result is within the specified indicated on the M-MDS.

- If it is not as specified, replace the WU-TWC. (See Service and Repair.)