Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Voice Recognition Microphone Disconnected (B1579)

Toyota Tacoma 2015-2018 Service Manual / Navigation / Multi Info Display / Navigation System / Voice Recognition Microphone Disconnected (B1579)

DESCRIPTION

The navigation receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.

This DTC is stored when the microphone connection detection signal is disconnected.

DTC Code

DTC Detection Condition

Trouble Area

B1579

Telephone microphone signal is lost.

  • Telephone microphone assembly
  • Navigation receiver assembly
  • Harness or connector

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Remove the navigation receiver assembly with connector still connected.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N25-19 (MIN-) - Body ground

Always

Below 1 Ω

*a

Component with harness connected

(Navigation Receiver Assembly)

NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

OK

2.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)

(a) Disconnect the N25 navigation receiver assembly connector.

(b) Disconnect the T26 telephone microphone assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N25-6 (SNS2) - T26-3 (SNS2)

Always

Below 1 Ω

N25-19 (MIN-) - T26-4 (MIC-)

Always

Below 1 Ω

N25-6 (SNS2) - Body ground

Always

10 kΩ or higher

N25-19 (MIN-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT TELEPHONE MICROPHONE ASSEMBLY

(a) Remove the telephone microphone assembly (See page ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (SNS2) - 4 (MIC-)

Always

Below 1 Ω

*a

Component without harness connected

(Telephone Microphone Assembly)

OK

REPLACE NAVIGATION RECEIVER ASSEMBLY

NG

REPLACE TELEPHONE MICROPHONE ASSEMBLY

Stereo Component Amplifier Disconnected (B15D3)
DESCRIPTION The navigation receiver assembly and stereo component amplifier assembly are connected by the AVC-LAN communication line. When an AVC-LAN communication error occurs between the navigat ...

Satellite Radio Broadcast cannot be Received
CAUTION / NOTICE / HINT NOTICE: Some satellite radio broadcasts require payment. A contract must be made between a satellite radio company and the user. If the contract expires, it w ...

Other materials:

CD cannot be Inserted / Played or CD is Ejected Right After Insertion
PROCEDURE 1. CHECK IF A PROPER CD IS INSERTED (a) Make sure that the CD is an audio CD or a CD with an MP3, WMA or AAC file, and that it is not deformed, flawed, stained, deteriorated or otherwise defective. OK: CD is normal. HINT: Translucent or uniq ...

Operation Check
OPERATION CHECK 1. CHECK WIRELESS CHARGING SYSTEM OPERATION (a) Turn the ignition switch ON (IG or ACC). (b) Press the mobile wireless charger switch and check that the switch indicator light illuminates. Text in Illustration *a Switch Indicator Light (c) Plac ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals ...

© 2011-2020 Copyright www.ttguide.net