Toyota Venza: AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus) transmits switch signals via AVC-LAN communication.
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) Remove the navigation receiver assembly (See page
|
|
.gif)
).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
7 (TX1+) - 8 (TX1-) |
Always |
60 to 80 Ω |
|
*a |
Component without harness connected (Navigation Receiver Assembly) |
| NG | .gif) |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT) |
(a) Disconnect the E40 navigation receiver assembly connector.
(b) Disconnect the E14 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 |
|---|---|---|
|
E14-8 (TX+) - E40-7 (TX1+) |
Always |
Below 1 Ω |
|
E14-7 (TX-) - E40-8 (TX1-) |
Always |
Below 1 Ω |
|
E14-8 (TX+) - Body ground |
Always |
10 kΩ or higher |
|
E14-7 (TX-) - 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.
HINT:
- Check all slave units.
- If disconnecting a slave unit causes the master unit to return to normal, the slave unit is defective and should be replaced.
OK:
Master unit returns to normal.
| OK | |
REPLACE MALFUNCTIONING PARTS |
| NG | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
Mute Signal Circuit between Navigation Receiver Assembly and Stereo Component
Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier assembly to mute
noise. Due to this, the noise produced by changing the sound source ceases.
If there is an open in the ci ...
Navigation Voice Circuit
DESCRIPTION
This circuit is used when the voice switch of the steering pad switch assembly
is pushed.
Using this circuit, the navigation receiver assembly sends signals to the stereo
component a ...
Other materials about Toyota Venza:
Parking Brake Switch Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) detects the condition
of the parking brake switch.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY
(a) Inspect the shift lock operation.
(1) Move the shift lever to P.
(2) Turn the ignition switch off.
(3) Check that the shift lever cannot be moved from P to any other position ...
Open in One Side of CAN Branch Line
DESCRIPTION
If some ECUs and sensors are not displayed on the "CAN Bus Check" screen of the
Techstream and some ECUs and sensors repeatedly appear and disappear from the screen
when the CAN main bus wires are normal (there is no open, short, sho ...
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