Sound Signal Circuit between Multi-display Controller and Navigation Assembly

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Sound Signal Circuit between Multi-display Controller and Navigation Assembly

DESCRIPTION

This is the sound signal circuit from the display and navigation module display to the multi-display selector.
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 HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-DISPLAY SELECTOR)





(a) Disconnect the F34 navigation 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 -- Continue to next step.
2. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY





(a) Reconnect the F34 navigation connector.
(b) Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions shown in the chart below.
Signal Waveform:






NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE