Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Perform the Circuit/System Verification before proceeding with the Circuit/System Testing.

Disconnect the EVAP purge pipe from the EVAP canister purge solenoid valve.

If the Fuel Tank Pressure Sensor parameter is less than 1.7 volts, replace the EVAP canister purge solenoid valve.
If the pressure is greater than 1.7 volts, replace the FTP sensor.