Microphone Circuit Between Multi-Display and Navigation ECU

NAVIGATION: NAVIGATION SYSTEM: Microphone Circuit between Multi-display and Navigation ECU

Microphone Circuit between Multi-display and Navigation ECU

DESCRIPTION

This circuit sends a microphone signal from the multi-display to the navigation ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (MULTI-DISPLAY - NAVIGATION ECU)




(a) Disconnect the M14 display connector.
(b) Disconnect the N4 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE