Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
EVAPCP | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to HX53 . |
HX9 CHECK FOR VISUAL CAUSES OF EXCESSIVE FUEL TANK VACUUM
Note: If the EVAP canister vent valve and the fuel tank assemblies are not accessible during this step, refer to the Workshop Manual Sections 303-13, Evaporative Emissions and 310-01, Fuel Tank and Lines for removal instructions.
• Check for kinks or bends in the fuel vapor hoses and tubes (EVAP purge valve outlet tube and EVAP canister tube).
• Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and canister vent hose assembly for blockage, contamination or debris.
Is a concern present?
Yes | No |
|---|---|
REMOVE any blockage, contamination or debris around the fuel vapor hose and tubes and EVAP canister vent valve assembly. REMOVE kinks or bends in the EVAP purge valve outlet tube, EVAP canister tube, and canister vent hose assembly. Clear the PCM DTCs. For repair verification, CARRY OUT the evaporative emission leak check monitor repair verification drive cycle. REFER to Section 2, On Board Diagnostic (OBD) Drive Cycle. | GO to HX10 . |
HX10 CHECK THE FTP SENSOR VOLTAGE WITH THE FUEL FILLER CAP REMOVED OR THE CAPLESS FUEL TANK FILLER PIPE OPENED
Note: After installing the supplemental refueling adaptor or removing the fuel filler cap, wait one minute to allow the pressure in the fuel tank to equalize with the ambient air pressure before accessing the PID.
• For vehicles with a capless fuel filler pipe,
• Install the supplemental refueling adaptor provided with the vehicle to open the capless fuel tank filler pipe.
• For all others,
• Remove the fuel filler cap.
• Ignition ON, engine OFF.
• Access the PCM and monitor the FTP (PRESS) PID.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.