Navigation Voice Speaker Circuit

DESCRIPTION

This circuit is used when the voice guidance in the navigation system is on.

WIRING DIAGRAM

INSPECTION PROCEDURE

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

1. Disconnect the multi-display connector p1 and the navigation ECU connector p2.

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

   Standard resistance:

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

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - STEREO COMPONENT AMPLIFIER)

1. Disconnect the multi-display connector J51 and stereo component amplifier connector P30.

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

   Standard resistance:

   Tester connection	Condition	Specified condition
   IVO+ - II1+	Always	Below 1 Ω
   IVO- - II1-	Always	Below 1 Ω
   IVO+ - Body ground	Always	10 kΩ or higher
   IVO- - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE