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.
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HOMESERVICE MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 109 (MODULE COMMUNICATIONS NETWORK SYSTEM)
2009 Ford Ranger 2D Pickup, 2.3 D, Automatic
Section 109 (Module Communications Network System)
2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Section 109 (Module Communications Network System)
WARNING: This page is about a different car, the 2008 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Diagnostic Tests
- Communications Network
- Notes
- Principles of Operation
- Inspection & Verification
- DTC Index
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The PCM Does Not Respond To The Scan Tool or No High Speed Controller Area Network (HS-CAN) Communication
- Pinpoint Test B: The Occupant Classification System Module (OCSM) Does Not Communicate With the Scan Tool
- Pinpoint Test C: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
- Pinpoint Test D: The Smart Junction Box (SJB) Does Not Respond To The Scan Tool
- Pinpoint Test E: The Instrument Cluster (IC) Does Not Respond To The Scan Tool
- Pinpoint Test F: The Four Wheel Drive (4X4) Control Module Does Not Respond To The Scan Tool
- Pinpoint Test G: The ABS Module Does Not Respond To The Scan Tool or No International Standards Organization (ISO) 9141 Network Communication
- Pinpoint Test H: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, One Or More Modules Are Not Responding During Network Test
- Pinpoint Test I: No Power To The Scan Tool
- Communications Network
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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.