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 MANUALSACURA2008RDXREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 249 (MODULE COMMUNICATIONS NETWORK SYSTEM)
2008 Acura RDX
Section 249 (Module Communications Network System)
2008 Acura RDXSECTION Section 249 (Module Communications Network System)
WARNING: This page is about a different car, the 2005 Mercury Sable and 2005 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Diagnosis And Testing
- Communications Network
- Notes
- Special Tool(s)
- Principles of Operation
- Inspection and Verification
- System Precheck
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The Anti-Lock Brake System (Abs) Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test B: The Electronic Automatic Temperature Control (EATC) Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test C: The Smart Junction Box (SJB) Does Not Respond To The Diagnostic Tool
- Pinpoint Test D: The Powertrain Control Module (Pcm) Does Not Respond To The Diagnostic Tool
- Pinpoint Test E: The Instrument Cluster Does Not Respond To The Diagnostic Tool
- Pinpoint Test F: No Medium Speed Controller Area Network (Can) Communication
- Pinpoint Test G: No High Speed Controller Area Network (Can) Communication
- Pinpoint Test H: No International Standards Organization (ISO) 9141 Network Communication
- Pinpoint Test I: No Module/Network Communication - No Power To The Diagnostic 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.