Confirmation Test

Connect scan tool to Data Link Connector (DLC) No. 3. See Figure. Ensure all accessories are turned off. Start and warm engine to normal operating temperature. Raise engine speed to 2500-3000 RPM for 3 minutes. Alternate between 3000 and 2000 RPM every 2 seconds. Using scan tool, check waveform of bank 1 and bank 2 heated oxygen sensor.