DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)
REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)
CLEAR DTC
CHECK DTC
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
CLEAR DTC
CHECK DTC
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER AND TELEVISION DISPLAY)
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
CLEAR DTC
CHECK DTC
DTC B15D3 Stereo Component Amplifier Disconnected
DESCRIPTION
The multi-media module receiver assembly and stereo component amplifier assembly are connected by the MOST communication line.
When a MOST communication error occurs between the multi-media module receiver assembly and stereo component amplifier assembly, these DTCs will be stored.
| DTC Code | DTC Detection Condition | Trouble Area |
| B15D3 |
A device that is listed in the MOST network connected device record of the master unit is missing. |
Stereo component amplifier assembly power source circuit
MOST circuit between multi-media module receiver assembly and stereo component amplifier assembly
Stereo component amplifier assembly
Multi-media module receiver assembly
|
- For the MOST network, the multi-media module receiver assembly is the master unit.
WIRING DIAGRAM
INSPECTION PROCEDURE
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
Check for optional components.
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 |
Electrical noise from radio waves generated by optional components or the wiring for those components may affect MOST communication.
This DTC may be stored when a MOST communication error occurs due to electrical noise.
| 2.REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
Remove optional components (including associated wiring).
- Do not remove optional components or associated wiring without the permission of the customer.
Recheck for DTCs and check if the same DTC is output again ().
| OK | |
| |
| END (COMMUNICATION MALFUNCTION DUE TO NOISE) |
|
| 5.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND) |
Disconnect the stereo component amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F74-3 (GND) - Body ground | Always | Below 1 Ω |
| F74-18 (GND2) - Body ground | Always | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| F74-1 (+B) - F74-3 (GND) | Always | 11 to 14 V |
| F74-16 (+B2) - F74-3 (GND) | Always | 11 to 14 V |
Text in Illustration| *a | Front view of wire harness connector
(to Stereo Component Amplifier Assembly) |
Result| Result | Proceed to |
| OK (w/o Rear Seat Entertainment System) | A |
| OK (w/ Rear Seat Entertainment System) | B |
| NG | C |
| |
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 6.CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
Disconnect the F84 multi-media module receiver assembly connector.
Disconnect the F85 stereo component amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F84-2 (MI+) - F85-5 (MO+) | Always | Below 1 Ω |
| F84-3 (MI-) - F85-6 (MO-) | Always | Below 1 Ω |
| F84-4 (SLDI) - F85-7 (SLDO) | Always | Below 1 Ω |
| F84-5 (MO+) - F85-2 (MI+) | Always | Below 1 Ω |
| F84-6 (MO-) - F85-3 (MI-) | Always | Below 1 Ω |
| F84-7 (SLDO) - F85-4 (SLDI) | Always | Below 1 Ω |
| F84-2 (MI+) - Body ground | Always | 10 kΩ or higher |
| F84-3 (MI-) - Body ground | Always | 10 kΩ or higher |
| F84-4 (SLDI) - Body ground | Always | 10 kΩ or higher |
| F84-5 (MO+) - Body ground | Always | 10 kΩ or higher |
| F84-6 (MO-) - Body ground | Always | 10 kΩ or higher |
| F84-7 (SLDO) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 7.REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
Replace the stereo component amplifier assembly with a new or normally functioning one ().
Recheck for DTCs and check if the same DTC is output again ().
| | REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
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|
|
| OK | |
| |
| END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE) |
|
| 10.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER AND TELEVISION DISPLAY) |
Disconnect the F84 multi-media module receiver assembly connector.
Disconnect the F85 stereo component amplifier assembly connector.
Disconnect the L56 television assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F84-5 (MO+) - F85-2 (MI+) | Always | Below 1 Ω |
| F84-6 (MO-) - F85-3 (MI-) | Always | Below 1 Ω |
| F84-7 (SLDO) - F85-4 (SLDI) | Always | Below 1 Ω |
| F85-5 (MO+) - L56-2 (MI+) | Always | Below 1 Ω |
| F85-6 (MO-) - L56-3 (MI-) | Always | Below 1 Ω |
| F85-7 (SLDO) - L56-4 (SLDI) | Always | Below 1 Ω |
| F85-2 (MI+) - Body ground | Always | 10 kΩ or higher |
| F85-3 (MI-) - Body ground | Always | 10 kΩ or higher |
| F85-4 (SLDI) - Body ground | Always | 10 kΩ or higher |
| F85-5 (MO+) - Body ground | Always | 10 kΩ or higher |
| F85-6 (MO-) - Body ground | Always | 10 kΩ or higher |
| F85-7 (SLDO) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 11.REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
Replace the stereo component amplifier assembly with a new or normally functioning one ().
Recheck for DTCs and check if the same DTC is output again ().
| | REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
|
|
|
| OK | |
| |
| END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE) |
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