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 MANUALSTOYOTA2009SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTENTERTAINMENT SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSMUTE SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND TELEVISION DISPLAY ASSEMBLY
2009 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly
2009 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly
AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly
Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly
DESCRIPTION
The navigation receiver assembly controls the volume according to the mute signal the television display assembly.
The mute signal is sent to reduce noise and popping sound generated switching the mode, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - NAVIGATION RECEIVER)
(a) Disconnect the U2 television display assembly connector.
(b) Disconnect the I25 navigation receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(d) Reconnect the television display assembly connector.
(e) Reconnect the navigation receiver assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT TELEVISION DISPLAY ASSEMBLY
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
NG -- REPLACE TELEVISION DISPLAY ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN 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.