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Home >> Lexus >> 2008 >> LX 570 V8-5.7L (3UR-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Radio, Stereo, and Compact Disc >> Testing and Inspection >> Component Tests and General Diagnostics >> Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier









AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

This circuit sends a signal to the stereo component amplifier to mute noise. Therefore, the noise produced by changing the sound source ceases.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)





(a) Disconnect the F1 receiver connector.
(b) Disconnect the F18 amplifier 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.
2. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY (OPERATION)
(a) Replace the stereo component amplifier with a normal one and check if it operates normally Removal.
OK:
The audio system operates normally.
NG -- REPLACE RADIO RECEIVER ASSEMBLY
OK -- END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)