HX: Evaporative Emission (EVAP) System — 2016 workshop reference 5219

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.

HX23 INTERMITTENT CHECK

• Ignition OFF.

• FTP Sensor connector connected.

• PCM connector connected.

• Ignition ON, engine OFF.

• Access the PCM and monitor the FTP (VOLT) PID.

• While monitoring the PID, wiggle, shake, and bend small sections of the wiring harness while working from the sensor to the PCM.

Does the PID value remain steady?

Yes	No
For DTC P0451, CHECK for kinks or bends in the fuel vapor hoses and tubes between the fuel tank and dust separator. CHECK the EVAP canister ports and canister vent hose assembly for contamination or debris. CHECK the dust separator for blockage. REPAIR as necessary. If no concern is present, INSTALL a new FTP sensor. REFER to the Workshop Manual Section 303-13, Evaporative Emissions. 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. REFER to the instruction manual provided by the scan tool manufacturer. Clear the PCM DTCs. REPEAT the self-test. For all others, INSTALL a new FTP sensor. REFER to the Workshop Manual Section 303- 13, Evaporative Emissions. 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. CARRY OUT the EVAP Test. REFER to the instruction manual provided by the scan tool manufacturer. Clear the PCM DTCs. REPEAT the self-test.	REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test.

Yes

For DTC P0451, CHECK for kinks or bends in the fuel vapor hoses and tubes between the fuel tank and dust separator. CHECK the EVAP canister ports and canister vent hose assembly for contamination or debris. CHECK the dust separator for blockage.

REPAIR as necessary.

If no concern is present, INSTALL a new FTP sensor. REFER to the Workshop Manual Section 303-13, Evaporative Emissions.

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. REFER to the instruction manual provided by the scan tool manufacturer.

Clear the PCM DTCs. REPEAT the self-test.

For all others, INSTALL a new FTP sensor. REFER to the Workshop Manual Section 303- 13, Evaporative Emissions. 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. CARRY OUT the EVAP Test. REFER to the instruction manual provided by the scan tool manufacturer.

Clear the PCM DTCs. REPEAT the self-test.

REPAIR as necessary.

Clear the PCM DTCs. REPEAT the self-test.

HX24 CHECK THE PCM OUTPUT TO THE EVAP CANISTER VENT VALVE

Note: For applications using the EONV EVAP leak check monitor, KAPWR provides voltage to the EVAP canister vent valve instead of VPWR.

• Ignition OFF.

• Evaporative Emission (EVAP) Canister Vent Valve connector disconnected.

• Connect a non-powered test lamp between:

Source reference 5219

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.