Toyota Tacoma manuals

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

Toyota Tacoma 2015-2018 Service Manual / Audio / Video / Audio And Visual System / Voice Recognition Microphone Disconnected (B1579)

DESCRIPTION

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

This DTC is stored when a microphone connection detection signal line is disconnected.

DTC Code

DTC Detection Condition

Trouble Area

B1579

Telephone microphone signal is lost.

  • Telephone microphone assembly
  • Radio and display receiver assembly
  • Harness or connector

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Remove the radio and display receiver assembly with connectors still connected.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R31-19 (MIN-) - Body ground

Always

Below 1 Ω

*a

Component with harness connected

(Radio and Display Receiver Assembly)

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

2.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)

(a) Disconnect the R31 radio and display receiver assembly connector.

(b) Disconnect the T26 telephone microphone assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R31-6 (SNS2) - T26-3 (SNS2)

Always

Below 1 Ω

R31-19 (MIN-) - T26-4 (MIC-)

Always

Below 1 Ω

R31-6 (SNS2) - Body ground

Always

10 kΩ or higher

R31-19 (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.

(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 RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE TELEPHONE MICROPHONE ASSEMBLY

Sending Malfunction (Navigation to APGS) (U0073,U0100,U0140,U0155)
DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. DTC Detection Condition Trouble Area U0073 ...

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:

Dtc Check / Clear
DTC CHECK / CLEAR CHECK FOR DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Central Gateway / Trouble Codes. (e) Read the DTCs. CLEAR DTC (a) Connect the Techstream to the DLC3. (b) ...

Interior
*1: If equipped * 2: Access Cab and Double Cab models *3: Vehicles with auto anti- glare inside rear view mirror *1: If equipped *2: Vehicles with an automatic transmission * : If equipped * 1: If equipped * 2: Vehicles with sub woofer ...

Engine Control System Malfunction (C1201)
DESCRIPTION If a malfunction in the engine control system is detected, VSC and TRAC operations are prohibited by the fail-safe function. DTC No. Detection Item DTC Detection Condition Trouble Area C1201 Engine Control System ...

© 2011-2019 Copyright www.ttguide.net