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.
Circuit Description
Each unit of navigation system connected with AVC-LAN (communication bus) transfers the signal of each switch by communication.
When +B short and GND short occur in this AVC-LAN, navigation system will not function normally as the communication is discontinued.
In this AVC-LAN, Multi Display becomes the master of the communication, and the radio receiver assembly has a terminator necessary for transmitting the communication.
Multi Display is connected between navigation ECU and radio receiver assembly. Navigation system has the structure that makes communication impossible without navigation ECU, multi display or radio receiver assembly.
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.