Catalytic Converter, Checking

Catalytic Converter, Checking

Test requirements:

• No DTCs in DTC memory; check DTC memory "Mode 3: Check DTC memory ".

• Coolant temperature at least 80 °C "Mode 1: Check measuring values"; "PID 05: Coolant temperature",.

Work procedure

CAUTION!
To reduce the risk of accident during road tests, always observe safety precautions. Refer to => [ Safety Precautions ] Service Precautions.



- Connect diagnostic tester.

- Perform a 15 minute road test in the highest gear or in the highest driving mode on a level driving surface.

The following operating conditions must be met during this road test:

• Engine speed 1800 to 2200 RPM "Mode 1: Check measuring values "; "PID 12: Engine rotations per minute (RPM)".

• Vehicle speed constant 90 km/h "Mode 1: Check measuring values "; "PID 13: Vehicle speed".

- Let engine run at idle.

- In diagnostic function "33 - OBD", select "Mode 6: Check test results of components that are not continuously monitored".

- Select "Test-ID 01: Catalytic converter" off.

- Check specified values at idle.

• Bank 1 = cylinder bank 1 in direction of travel, right; Bank 2 = cylinder bank 2 in direction of travel, left





- End diagnosis and switch ignition off.