Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description .
Ignition ON, verify the scan tool hood position parameter displays Open.
- If the hood position does not display Open, refer to Diagnostic Trouble Code (DTC) List - Vehicle for DTC P254F.
Ignition ON and fuel cap removed, verify that the FTP sensor parameter is between 1.3-1.7 V.
- If not within the specified range, go to the FTP sensor section in Circuit/System Testing .
Install the fuel cap.
With the engine running, the EVAP vent solenoid valve open, use a scan tool to command the EVAP purge solenoid valve to 100%. The fuel tank vacuum should not increase to more than -15 mm Hg (-8 in H2O).
- If greater than the specified range, go to the restriction section in Circuit/System Testing .
Using the scan tool, decrease the canister purge duty cycle from 100% to 0%. The vacuum should decrease to near zero.
- If the fuel tank vacuum does not return to zero or appears to decrease too slowly go to the restriction section in Circuit/System Testing .
Operate the vehicle within the conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.