Pinpoint Test A: Evaporative Emission System Purge Flow Incorrect
A1: checking the installation of the fuel filler cap and the condition of the canister, piping and connectors
- Make sure the fuel filler neck is correctly installed and tightened.
- Check the condition of the adsorber.
- Check the condition of all accessible pipes and connectors on the fuel vapor line.
Yes - GO to A2.
No - PERFORM the necessary repairs. CLEAR DTCs, check system for proper operation.
A2: check the function of the purge valve
- Disconnect the fuel vapor line from the evaporative emission system purge valve inlet port.
- Start the engine and let it RUN for 2 minutes to get it to normal operating temperature.
- Check purge valve operation by feel or sound (using a stethoscope, you can hear the operation of the valve).
Yes - CHECK for relevant DTCs. Refer to the DTC index above.
No - CHECK for purge valve DTCs and refer to DTC Index.
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