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Home >> Lexus >> 2006 >> SC 430 V8-4.3L (3UZ-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Component Tests and General Diagnostics >> AVC-LAN Circuit (Navigation ECU-Stereo Component Amplifier Assy)
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AVC-LAN Circuit (Navigation ECU-Stereo Component Amplifier Assy)

AVC-LAN CIRCUIT (NAVIGATION ECU - STEREO COMPONENT AMPLIFIER ASSY)

CIRCUIT DESCRIPTION

The navigation system uses the AVC-LAN to control communication between all of its units. Each unit is connected to the AVC-LAN and communicates by sending and receiving switch signals.
When the AVC-LAN has a +B short or a GND short, communication is cut and the navigation system will not function normally.

Wiring Diagram:






Step 1:




INSPECTION PROCEDURE
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