Toyota Tacoma (2015-2018) Service Manual: AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the switch signals using the AVC-LAN.
If a short to +B or short to ground occurs in the AVC-LAN, the navigation system will not function normally because communication is not possible.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
The navigation receiver assembly is the master unit.
PROCEDURE
|
1. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Disconnect the navigation receiver assembly connectors.
|
(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 (AVC-LAN CIRCUIT) |
(a) Disconnect the N25 navigation receiver assembly connector.
(b) Disconnect the S23 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N25-7 (TX1+) - S23-8 (TX+) |
Always |
Below 1 Ω |
|
N25-8 (TX1-) - S23-7 (TX-) |
Always |
Below 1 Ω |
|
N25-7 (TX1+) - Body ground |
Always |
10 kΩ or higher |
|
N25-8 (TX1-) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT MALFUNCTIONING PARTS |
(a) Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.
HINT:
- Check all slave units.
- If disconnecting a slave unit causes the master unit to return to normal operation, the slave unit is defective and should be replaced.
OK:
Master unit returns to normal operation.
| OK | |
REPLACE MALFUNCTIONING PARTS |
| NG | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier assembly to mute
noise. Because of that, the noise produced by changing the sound source ceases.
If there is an open in th ...
Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination
Meter
DESCRIPTION
The stereo component amplifier assembly receives a vehicle speed signal from
the combination meter assembly to control the ASL function.
HINT:
A voltage of 12 V or 5 V is outp ...
Other materials:
Fuel Pump Ecu
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the battery terminal. Therefore, make sure to read the disconnecting
the cable from the battery ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY
(a) Check the operation.
(1) Apply battery voltage between the terminals and check that the plunger
operates.
Text in Illustration
*a
Component without harness con ...
Customizable features
Your vehicle includes a variety of electronic features that can be personalized
to your preferences. Programming these preferences requires specialized equipment
and may be performed by an authorized Toyota dealership.
Some function settings are changed simultaneously with other functions being ...
