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 MANUALSLEXUS2010LX 570 V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTENTERTAINMENT SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSSOUND SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND MULTI-MEDIA INTERFACE ECU
2010 Lexus LX 570 V8-5.7L (3UR-FE)
Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU
2010 Lexus LX 570 V8-5.7L (3UR-FE)SECTION Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU
AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU
- Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU
DESCRIPTION
This is the sound signal circuit from the multi-media interface ECU to the display and navigation module display.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - NAVIGATION ECU)
(a) Disconnect the L50 multi-media interface ECU connector.
(b) Disconnect the F51 display and navigation module display connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table
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.