DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)
INSPECT MALFUNCTIONING PARTS
NAVIGATION SYSTEM - AVC-LAN Circuit
DESCRIPTION
Each audio system component connected to the AVC-LAN (communication bus) transfers switch signals using the audio visual communication local area network.
If a short to +B or short to ground occurs in the AVC-LAN, the audio system will not function normally because communication is not possible.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY |
Remove the multi-media module receiver assembly ().
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 |
| 45 (TX3+) - 46 (TX3-) | Always | 60 to 80 Ω |
| | REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
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| 2.CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - BATTERY AND BODY GROUND) |
- For details of the connectors, refer to Terminals of ECU ().
Referring to the following AVC-LAN wiring diagram, check all AVC-LAN circuits.
Disconnect all connectors in all AVC-LAN circuits.
Check for an open or short in all AVC-LAN circuits.
- OK:
- There is no open or short circuit.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT MALFUNCTIONING PARTS |
Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.
Check all slave units.
When disconnecting a slave unit causes the master unit to return to normal operation, this indicates that the slave unit is malfunctioning. Replace the malfunctioning slave unit.
- OK:
- Master unit returns to normal operation.
| | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| OK | |
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| REPLACE MALFUNCTIONING PARTS |
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