4 Runner 2WD V6-4.0L (1GR-FE) (2006)
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Navigation System: Component Tests and General Diagnostics
AVC-LAN Circuit
AVC-LAN CIRCUIT
CIRCUIT DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.
When a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function normally as communication is discontinued.
Step 1