Test Procedure

Step	Procedure	Result / Action to Take
1	Activate Monitors: Perform the function test in Diagnostic Mode 06. Refer to appropriate 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(s) in the exhaust system. GO TO: Step 2.
2	O2 Sensor Monitoring: Erase the DTC memory. Refer to: DIAGNOSTIC MODE 04 - ERASE DTC MEMORY . Perform a road test to verify repair. If the DTC does not return:	Generate readiness code. Refer to: READINESS CODE . If no leaks are found in the exhaust system: Replace the catalytic converter with front exhaust pipe. GO TO: Step 3 THREE WAY CATALYTIC CONVERTER, TWC CHECKING => 3 .
3	Final procedure: Perform a road test to verify repair.	After the repair work, the following work steps must be performed in the following sequence: Check the DTC memory. Refer to: DIAGNOSTIC MODE 03 - READ DTC MEMORY . If necessary, erase the DTC memory. Refer to: DIAGNOSTIC MODE 04 - ERASE DTC MEMORY . If the DTC memory was erased, generate readiness code. Refer to: READINESS CODE . Return vehicle to Customer.