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:

Removal
REMOVAL PROCEDURE 1. REMOVE FRONT NO. 2 EXHAUST PIPE ASSEMBLY (for 2GR-FKS) 2. REMOVE PROPELLER SHAFT HEAT INSULATOR BRACKET SUB-ASSEMBLY (a) Remove the 2 bolts and propeller shaft heat insulator bracket. 3. REMOVE FRONT PROPELLER SHAFT ASSEMBLY (a) Place matchmarks on the propeller sh ...

Tailgate
The tailgate can be opened. Pull the handle Open the tailgate slowly The support cables will hold the tailgate horizontal. After closing the tailgate, try pulling it toward you to make sure it is securely locked. Removing the tailgate ■ Before removing the tailgate (vehicles with r ...

Front Fog Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the front fog lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the main body ECU (multiplex ...

© 2011-2019 Copyright www.ttguide.net