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.
• Check the charge air cooler (CAC) system for leaks (hoses and cooler).
• Check the CAC and intake air system for restrictions.
• Check for aftermarket exhaust accessories and performance modifications.
• Visually inspect the exhaust system for the following:
◾ leaks, cracks, or punctures upstream of turbocharger ◾ aftermarket accessories and performance modifications ◾ tailpipe modifications that increase the exhaust restriction ◾ plugged or restricted exhaust
Is a concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to HN13 . |
HN13 CHECK THE CHARGE AIR COOLER (CAC) AND INTAKE AIR SYSTEMS FOR LEAKS AND RESTRICTIONS
Note: Remember to reinstall the sensor, reconnect the CAC tube to the throttle body and remove the plastic bag from the air filter at the completion of this step.
• Disconnect the CAC tube from the throttle body.
• Use a suitable method to temporarily plug the CAC tube outlet.
• Place the air filter in a plastic bag to prevent air flow out the intake port and reinstall it in the vehicle.
• Remove the IAT sensor from the ducting between the air filter housing and the turbocharger.
• Connect the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 (522) or equivalent to the intake air system using an appropriate adapter.
• Fill the intake air system with smoke.
• Check the intake air system for leaks and restrictions.
Are any leaks or restrictions present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to HN14 . |
HN14 CHECK BYPASS VALVE OPERATION
Note: For vehicles without the RPM command PID, use the accelerator pedal to hold the engine RPM at approximately 2,000 RPM.
Note: The TCBP PID value may decrease by 0.97 KPa (0.14 psi) or less when the TCBY valve is commanded ON.
• Ignition ON, engine running.
• Access the PCM and control the TURBO_BPASS (MODE) PID.
• Access the PCM and control the TURBO_BPASS_2 (MODE) PID.
• Command the TURBO_BPASS PID and the TURBO_BPASS_2 PID to OFF.
• Access the PCM and control the TURBO_WGATE (PER) PID.
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.