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

1. INSPECT NAVIGATION ECU

1. Disconnect the navigation ECU connector N7.

2. Measure the resistance according to the value(s) in the table below.

   Resistance:

   Tester connection	Condition	Specified condition
   SNSE - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - NAVIGATION ECU)

1. Disconnect the multi-display connector M4 and navigation ECU connector N7.

2. Measure the resistance according to the value(s) in the table below.

   Resistance:

   Tester connection	Condition	Specified condition
   MCO+ - MIC+	Always	Below 1 Ω
   MCO- - MIC-	Always	Below 1 Ω
   MCO+ - Body ground	Always	10 kΩ or higher
   MCO- - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL