Mute Signal Circuit between Navigation Assembly and Multi-display Controller

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Mute Signal Circuit between Navigation Assembly and Multi-display Controller

DESCRIPTION

The multi-display selector controls the volume according to the mute signal from the display and navigation module display.
The mute signal is sent to reduce noise and a popping sound generated when switching the mode, etc.
HINT:
- Only vehicles with a navigation system have this circuit.
- "Multi-display Controller" refers to the multi-display selector.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTI-DISPLAY SELECTOR





(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-DISPLAY SELECTOR)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-DISPLAY SELECTOR)





(a) Disconnect the F34 navigation module display connector.
(b) Disconnect the L23 selector connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY