Catalytic Converter: Testing and Inspection

Catalytic Converter, Checking

Observe all safety precautions: => [ Safety Precautions ] Generic Scan Tool

View clean working conditions: => [ Clean Working Conditions ] Clean Working Conditions

Prior to repair work, perform a preliminary check to verify the condition. Refer to => [ Preliminary Check ] Preliminary Check.

Special tools, testers and auxiliary items required

• Generic scan tool

Test requirements

• Battery voltage at least 12.5 volts.

• Oxygen Sensors OK.

• No leaks or damage to exhaust system.

Function test

- Perform the function test in Diagnostic Mode 06. Refer to => [ Diagnostic Mode 06 - Read Test Results for Specific Diagnostic Functions ] Diagnostic Modes 01 - 0A.

- End diagnosis and switch the ignition off.

If the specified values are exceeded:

- Check the exhaust system for leaks.

- If necessary, repair the leak in the exhaust system.

- Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 0A.

- Perform a road test to verify Repair.

If the DTC does not return:

Generate readiness code. Refer to => [ Readiness Code ] Readiness Code.

If no leaks are found in the exhaust system:

- Replace the catalytic converter with front exhaust pipe. Refer to the appropriate service information.

Final procedures

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 0A.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 0A.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Readiness Code.