Component Tests and General Diagnostics

Tailpipe Emission Inspection

Warning: Do not smoke during this procedure. Keep any open flame away from your work area.

1. Start the engine and warm up to normal operating temperature (cooling fan comes on).
2. Connect a tachometer.
3. Check idle speed and adjust the idle speed, if necessary.
4. Warm up and calibrate the CO meter according to the meter manufacturer's instructions.
5. Check idle CO with the headlights, heater blower, rear window defroster, cooling fan, and air conditioner off.

CO meter should indicate 0.1% maximum.