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 Land Rover LR4 BaseFACTORY OEM SERVICE PROCEDURE
Module Communications Network
- Module Communications Network
- Specifications
- Diagnostic Procedures
- Communications Network
- Inspection And Verification
- Symptom Chart
- Media Oriented Systems Transport (Most)
- Pinpoint Tests
- Pinpoint Test A: Most Tester Tests
- Pinpoint Test B: Most Network Initial Tests
- Pinpoint Test C: Most Network Downstream Tests
- Pinpoint Test D: Most Network Upstream Tests
- Pinpoint Test E: Control Module Tests
- Pinpoint Test F: Most Network Final Upstream Tests
- Pinpoint Test G: Blank Screen Tests
- Pinpoint Test H: Audio Head Unit Tests
- DTC Index
- Communications Network
- Removal And Installation
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.
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