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Home >> Toyota >> 2012 >> Tacoma 2WD L4-2.7L (2TR-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Component Tests and General Diagnostics >> Navigation Voice Circuit between Radio Receiver and Extension Module
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Navigation Voice Circuit between Radio Receiver and Extension Module





NAVIGATION: NAVIGATION SYSTEM: Navigation Voice Circuit between Radio Receiver and Extension Module
- Navigation Voice Circuit between Radio Receiver and Extension Module

DESCRIPTION

This circuit is used when the voice guidance in the navigation system is on or an incoming cellular phone voice in the "Bluetooth" hands-free system is heard.

Using this circuit, the extension module sends the signals to the stereo component amplifier assembly via radio and display receiver assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - EXTENSION MODULE)

(a) Disconnect the R19 radio and display receiver assembly connector.

(b) Disconnect the E15 extension module connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table
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