Toyota Tacoma (2015-2018) Service Manual: 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. |
|
WIRING DIAGRAM
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:
|
|
| NG | .gif) |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
.gif)
|
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 |
|
|
3. |
INSPECT TELEPHONE MICROPHONE ASSEMBLY |
(a) Remove the telephone microphone assembly (See page
.gif)
).
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| 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:
Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION
for Audio Function:
The radio and display receiver assembly receives a vehicle speed signal
from the combination meter assembly and sends the signal to radio and display
receiver assembly.
for Automatic Sound Levelizer (ASL):
This circuit is necessary fo ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT OIL PUMP RELIEF VALVE
(a) Coat the oil pump relief valve with engine oil and check that it
falls smoothly into the valve hole by its own weight.
If the valve does not fall smoothly, replace the timing chain cover assembly.
...
System Description
SYSTEM DESCRIPTION
1. WIRELESS CHARGER FUNCTION OUTLINE
(a) The wireless charging system enables Qi-compliant* rechargeable devices,
such as a cellular phone, to be recharged by merely placing it on the charging area
of the mobile wireless charger cradle assembly on the console panel.
HINT:
...
