- Stereo component amplifier assembly is/was not connected while the ignition switch is/was ON or ACC
- Communication between the master unit and the stereo component amplifier assembly is not possible when the engine is started.
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000019001 |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: B15D3; Stereo Component Amplifier Disconnected; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
B15D3 |
Stereo Component Amplifier Disconnected |
DESCRIPTION
The radio and display receiver assembly and stereo component amplifier assembly are connected by the AVC-LAN communication line.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B15D3 |
When either of the following conditions is met: |
|
HINT:
The radio and display receiver assembly is the master unit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
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 occurs:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
PROCEDURE
|
1. |
CHECK DTC |
(a) If DTC B15C3 is output, perform troubleshooting for DTC B15C3 first.
|
Result |
Proceed to |
|---|---|
|
DTC B15C3 is not output. |
A |
|
DTC B15C3 is output. |
B |
| B |
|
|
|
2. |
CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Check that optional components (including associated wiring) which generate radio waves are not installed.
Result
|
Result |
Proceed to |
|---|---|
|
Optional components (including associated wiring) are installed. |
A |
|
Optional components (including associated wiring) are not installed. |
B |
HINT:
- Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
- This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.
| B |
|
|
|
3. |
REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Remove optional components (including associated wiring).
NOTICE:
Do not remove optional components or associated wiring without the permission of the customer.
Result
|
Proceed to |
|---|
|
NEXT |
|
|
4. |
CHECK DTC |
(a) Clear the DTCs
Click here
![2018 - 2020 MY Sienna [11/2017 - ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
(b) Recheck for DTCs and check that no DTCs are output.
Click here
OK:
No DTCs are output.
| OK |
|
END |
|
|
5. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY POWER SOURCE) |
(a) Disconnect the L34 and L56 stereo component amplifier assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L34-2 (GND) - Body ground |
Always |
Below 1 Ω |
|
L34-6 (GND2) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L34-1 (+B) - L34-2 (GND) |
Always |
11 to 14 V |
|
L34-3 (+B2) - L34-2 (GND) |
Always |
11 to 14 V |
|
L56-12 (ACC) - L34-2 (GND) |
Ignition switch ACC |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the D195 radio and display receiver assembly connector.
(b) Disconnect the L56 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 |
|---|---|---|
|
D195-5 (TX1+) - L56-8 (TX+) |
Always |
Below 1 Ω |
|
D195-6 (TX1-) - L56-7 (TX-) |
Always |
Below 1 Ω |
|
D195-5 (TX1+) or L56-8 (TX+) - Body ground |
Always |
10 kΩ or higher |
|
D195-6 (TX1-) or L56-7 (TX-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Replace the stereo component amplifier assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs and check that no DTCs are output.
Click here
OK:
No DTCs are output.
| OK |
|
END |
| NG |
|
|
|