| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018QQB |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: AVC-LAN Circuit; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
AVC-LAN Circuit |
DESCRIPTION
Each unit of the rear seat entertainment system connected to the AVC-LAN (communication bus) transmits switch signals through the AVC-LAN.
If a short to +B or short to ground occurs in the AVC-LAN, the rear seat entertainment system will not function normally because communication is not possible.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC is stored.
- The radio and display receiver assembly may not operate normally.
HINT:
The radio and display receiver assembly is the master unit
PROCEDURE
|
1. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Remove the radio and display receiver assembly (See page
![2018 - 2020 MY Sienna [11/2017 - ]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT) |
(a) Disconnect the D195 radio and display receiver assembly connector.
(b) Disconnect the T27 television display assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D195-19 (TX+) - T27-18 (TX1+) |
Always |
Below 1 Ω |
|
D195-20 (TX-) - T27-19 (TX1-) |
Always |
Below 1 Ω |
|
D195-19 (TX+) or T27-18 (TX1+) - Body ground |
Always |
10 kΩ or higher |
|
D195-20 (TX-) or T27-19 (TX1-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT) |
(a) Disconnect the D70 disc player assembly connector.
(b) Disconnect the T27 television display assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D70-9 (TX+) - T27-20 (TX2+) |
Always |
Below 1 Ω |
|
D70-10 (TX-) - T27-21 (TX2-) |
Always |
Below 1 Ω |
|
D70-9 (TX+) or T27-20 (TX2+) - Body ground |
Always |
10 kΩ or higher |
|
D70-10 (TX-) or T27-21 (TX2-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
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 |
|
|
|