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.
2012 Ford Fiesta L4-1.6LFACTORY OEM SERVICE PROCEDURE
Information Bus
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Pinpoint Tests
- Pinpoint Test A: The PCM Does Not Respond To The Scan Tool
- Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool
- Pinpoint Test C: The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool
- Pinpoint Test D: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool
- Pinpoint Test E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
- Pinpoint Test F: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool
- Pinpoint Test G: The Remote Function Actuator (RFA) Module Does Not Respond To The Scan Tool
- Pinpoint Test H: The Front Control/Display Interface Module (FCDIM) Does Not Respond To The Scan Tool
- Pinpoint Test I: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool
- Pinpoint Test J: The Body Control Module (BCM) Does Not Respond To The Scan Tool
- Pinpoint Test K: The Audio Control Module (ACM) Does Not Respond To The Scan Tool
- Pinpoint Test L: The Global Positioning System Module (GPSM) Does Not Respond To The Scan Tool
- Pinpoint Test M: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool
- Pinpoint Test N: The Tire Pressure Monitor (TPM) /Vehicle Security Module (VSM) Does Not Respond To The Scan Tool
- Pinpoint Test O: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test P: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test Q: No Infotainment Controller Area Network (I-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test R: No Power To The Scan Tool
- Programming and Relearning
- Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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.