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.
For DTC P1450, unable to duplicate or identify the concern at this time. GO to Pinpoint Test Z . For all others, CHECK the EVAP system for leaks. GO to HX38 . | CHECK for blockages between the fuel tank, the EVAP purge valve, and the engine intake manifold. CHECK for obstructions in the EVAP purge valve diaphragm and ports. If OK, INSTALL a new EVAP purge valve. REFER to the Workshop Manual Section 303- 13, Evaporative Emissions. CARRY OUT the EVAP Test. REFER to the instruction manual provided by the scan tool manufacturer. Clear the PCM DTCs. REPEAT the self-test. |
HX19 CHECK THE VOLTAGE TO THE FTP SENSOR
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) FTP Sensor Connector, Harness Side | ( - ) FTP Sensor Connector, Harness Side |
|---|---|
VREF | SIGRTN |
Is the voltage between 4.5 - 5.5 V?
Yes | No |
|---|---|
For DTCs P144A or P1450, INSTALL a new FTP sensor. REFER to the Workshop Manual Section 303-13, Evaporative Emissions. For some vehicles, the FTP sensor is integral to the fuel vapor tube assembly. Clear the PCM DTCs. CARRY OUT the EVAP Test. REFER to the instruction manual provided by the scan tool manufacturer. 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. For all others, GO to HX20 . | GO to Pinpoint Test C . |
HX20 CHECK THE FTP CIRCUIT FOR AN OPEN
• Ignition OFF.
• PCM connector disconnected.
• Measure the resistance between:
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.