Audio And Visual System Avc-Lan Circuit Between Radio Receiver And Gateway Ecu
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK RADIO RECEIVER ASSEMBLY
CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - GATEWAY ECU)
AUDIO AND VISUAL SYSTEM - AVC-LAN Circuit between Radio Receiver and Gateway ECU |
DESCRIPTION
The radio receiver assembly uses the AVC-LAN to control communication between all of its components. Each component is connected to the AVC-LAN and communicates by sending and receiving switch signals. When the AVC-LAN has a +B short or a GND short, communication is cut and the radio receiver assembly will not function normally.In the AVC-LAN, the radio receiver assembly becomes the communication master, and the radio receiver assembly has enough resistance necessary for transmitting the communication.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK RADIO RECEIVER ASSEMBLY |
Measure the resistance of the receiver.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
L56-9 (TX+) - L56-10 (TX-)
| Always
| 60 to 80 Ω
|
| | REPLACE RADIO RECEIVER ASSEMBLY |
|
|
| 2.CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - GATEWAY ECU) |
Disconnect the L56 radio receiver assembly and K66 gateway ECU connectors.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
L56-9 (TX+) - K66-6 (GTX+)
| Always
| Below 1 Ω
|
L56-10 (TX-) - K66-21 (GTX-)
| Always
| Below 1 Ω
|
L56-9 (TX+) - Body ground
| Always
| 10 kΩ or higher
|
L56-10 (TX-) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
