Navigation System Microphone Circuit Between Microphone And Navigation Receiver Assembly

Audio Visual Telematics. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Navigation Multi Info Display. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK NAVIGATION RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY)

NAVIGATION SYSTEM - Microphone Circuit between Microphone and Navigation Receiver Assembly


DESCRIPTION

This circuit sends a microphone signal from the telephone microphone assembly to the navigation receiver assembly.
It also supplies power from the navigation receiver assembly to the telephone microphone assembly.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Navigation Multi Info Display.Navigation System.Navigation System Microphone Circuit Between Microphone And Navigation Receiver Assembly


INSPECTION PROCEDURE

1.CHECK NAVIGATION RECEIVER ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Navigation Multi Info Display.Navigation System.Navigation System Microphone Circuit Between Microphone And Navigation Receiver Assembly

  1. Disconnect the G152 navigation receiver assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G152-18 (SGND) - Body ground
    		Always
    		Below 1 Ω
    G152-19 (MIN-) - Body ground
    		Always
    		Below 1 Ω

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G152-4 (MACC) - Body ground
    		Ignition switch ACC
    		4 to 6 V
Text in Illustration
*a
Component without harness connected
(Navigation Receiver Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY)

  1. Disconnect the G152 navigation receiver assembly connector.

  1. Disconnect the N2 map light assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G152-4 (MACC) - N2-4 (MACC)
    		Always
    		Below 1 Ω
    G152-5 (MIN+) - N2-3 (MCO+)
    		Always
    		Below 1 Ω
    G152-19 (MIN-) - N2-2 (MCO-)
    		Always
    		Below 1 Ω
    G152-18 (SNS2) - Body ground
    		Always
    		Below 1 Ω
    G152-4 (MACC) - Body ground
    		Always
    		10 kΩ or higher
    G152-5 (MIN+) - Body ground
    		Always
    		10 kΩ or higher
    G152-19 (MIN-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (HILUX_TGN26 RM000002LQ301IX.html)