Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - Introduction - (Hybrid): Introduction: Preface: Notes
This service information provides a step-by-step approach for diagnosing driveability, emission, powertrain and hybrid-electric control system symptoms. Before beginning diagnosis, it may be helpful to reference any Technical Service Bulletins (TSBs) or On-line Automotive Service Information System (OASIS) information when this is available. The TSB/OASIS information is available on the Professional Technician Society (PTS) or Motorcraft® website.
This information is used in conjunction with the appropriate article(s) and appropriate SYSTEM WIRING DIAGRAMS article(s) . The information is used to provide additional diagnostics when directed by this service information . The information is also used for component removal and installation information. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for vehicle-specific wiring information and component, connector and splice location.
The following is a description of the information contained in each information of this service information .
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.