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.
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to HX53 . |
HX30 CHECK THE EVAP VAPOR BLOCKING VALVE RESISTANCE
• Ignition OFF.
• Evaporative Emission (EVAP) Vapor Blocking Valve connector disconnected.
• Measure the resistance between:
( + ) Evaporative Emission (EVAP) Vapor Blocking Valve Connector, Component Side | ( - ) Evaporative Emission (EVAP) Vapor Blocking Valve Connector, Component Side |
|---|---|
VBV - Pin 1 | VPWR - Pin 2 |
Is the resistance between 23 - 30 ohms?
Yes | No |
|---|---|
GO to HX31 . | INSTALL a new Evaporative Emission (EVAP) Vapor Blocking valve. REFER to the Workshop Manual Section 303-13, Evaporative Emissions. Clear the PCM DTCs. REPEAT the self-test. |
HX31 CHECK THE VOLTAGE TO THE EVAP VAPOR BLOCKING VALVE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Evaporative Emission (EVAP) Vapor Blocking Valve Connector, Harness Side | ( - ) |
|---|---|
VPWR - Pin 2 | Ground |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to HX32 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HX32 CHECK THE VBV 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.