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.
Point A Evaporative Emission (EVAP) Point B Evaporative Emission (EVAP) Canister Vent Valve Connector, Harness Canister Vent Valve Connector, Harness
Side Side
KAPWR - Pin 1 | CANV - Pin 2 |
VPWR | CANV - Pin 2 |
• Ignition ON, engine OFF.
• Access the PCM and control the EVAPCV (MODE) PID.
Does the test lamp turn ON and OFF when the output is commanded ON and OFF?
Yes | No |
|---|---|
GO to HX25 . | GO to HX26 . |
HX25 CHECK THE EVAP CANISTER VENT VALVE RESISTANCE
Note: For applications using the EONV EVAP leak check monitor, KAPWR provides voltage to the EVAP canister vent valve instead of VPWR.
• Ignition OFF.
• Measure the resistance between:
( + ) Evaporative Emission (EVAP) Canister Vent Valve Connector, Component Side | ( - ) Evaporative Emission (EVAP) Canister Vent Valve Connector, Component Side |
|---|---|
KAPWR - Pin 1 | CANV - Pin 2 |
VPWR | CANV - Pin 2 |
Are the resistances between 40 - 70 ohms?
Yes | No |
|---|---|
Unable to duplicate or identify the concern at this time. GO to Pinpoint Test Z . | INSTALL a new Evaporative Emission (EVAP) Canister Vent 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. |
HX26 CHECK THE VPWR VOLTAGE 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.
• Measure the voltage between:
( + ) Evaporative Emission (EVAP) Canister Vent Valve Connector, Harness Side | ( - ) |
|---|---|
KAPWR - Pin 1 | Ground |
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.