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 MANUALSTOYOTA2011LANDCRUISER V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTNAVIGATION SYSTEMTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSAVC-LAN CIRCUIT
2011 Toyota Landcruiser V8-5.7L (3UR-FE)
AVC-LAN Circuit
2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION AVC-LAN Circuit
NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: AVC-LAN Circuit
- AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers switch signals by the AVC-LAN.
If a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function normally as communication is stopped.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT
The display and navigation module display is the master unit.
PROCEDURE
1. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY
(a) Disconnect the F43 display and navigation module display connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE - MULTI-MEDIA INTERFACE ECU)
(a) Disconnect the F43 display and navigation module display connector.
(b) Disconnect the L36 multi-media interface ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT MULTI-MEDIA INTERFACE ECU
(a) Disconnect and reconnect the multi-media interface ECU until the display and navigation module display returns to normal operation.
HINT
If disconnecting the multi-media interface ECU causes the display and navigation module display to return to normal operation, the multi-media interface ECU is defective and should be replaced.
OK:
Display and navigation module display returns to normal operation.
NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal
OK -- REPLACE MULTI-MEDIA INTERFACE ECU Removal
RENDER: 1.0x
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.