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.
REFER to the Workshop Manual Section 303- 04, Fuel Charging and Controls, Turbocharger. Clear the PCM DTCs. REPEAT the self-test. | or restriction. REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. |
HN18 CHECK THE TURBOCHARGER WASTEGATE ACTUATOR LINKAGE FOR DAMAGE OR OBSTRUCTIONS
• Attempt to manually activate the suspect actuator.
Can the suspect actuator be activated manually?
Yes | No |
|---|---|
INSTALL a new turbocharger wastegate actuator. REFER to the Workshop Manual Section 303-04, Fuel Charging and Controls. Clear the PCM DTCs. REPEAT the self-test. | Visually inspect the suspect turbocharger wastegate actuator linkage for damage or obstructions. Repair as necessary. If no turbocharger wastegate actuator linkage concerns are present, INSTALL a new turbocharger assembly. Refer to the Workshop Manual Section 303-04, Fuel Charging and Controls. Clear the PCM DTCs. REPEAT the self-test. |
HN19 CHECK THE TURBOCHARGER BYPASS VALVE SOURCE VACUUM
• Disconnect the vacuum supply tube from the vacuum pump.
• Using the DSL ENG Pressure Test Kit 014-00761 or equivalent, measure the vacuum at the vacuum pump.
• Ignition ON, engine running.
• Record the vacuum.
Is the vacuum greater than 33.86 kPa (10 in-Hg)?
Yes | No |
|---|---|
GO to HN20 . | DIAGNOSE a loss of vacuum. REFER to the Workshop Manual Section 206-00, Brake System. Clear the PCM DTCs. REPEAT the self-test. |
HN20 CHECK THE BYPASS VALVE
• Disconnect the vacuum control tube from the TCBY valve.
• Using the DSL ENG Pressure Test Kit 014-00761 or equivalent, apply 33.86 kPa (10 in-hg) of vacuum to the TCBY valve.
Does the vacuum remain steady?
Yes | No |
|---|---|
GO to HN21 . | INSTALL a new TCBY valve. |
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.