Audio And Visual System Avc-Lan Circuit Between Radio Receiver And Amp
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK RADIO RECEIVER ASSEMBLY
CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER)
AUDIO AND VISUAL SYSTEM - AVC-LAN Circuit between Radio Receiver and AMP |
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (Communication bus) communicates by transferring the signals from each switch.When +B short and GND short occur in this AVC-LAN, the navigation system will not function normally as communication is discontinued.In the AVC-LAN, the multi-display 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
|
L54-5 (ATX+) - L54-15 (ATX-)
| Always
| 60 to 80 Ω
|
| | REPLACE RADIO RECEIVER ASSEMBLY |
|
|
| 2.CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER) |
Disconnect the L54 radio receiver assembly and V29 stereo component amplifier connectors.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
L54-5 (ATX+) - V29-8 (TX+)
| Always
| Below 1 Ω
|
L54-15 (ATX-) - V29-7 (TX-)
| Always
| Below 1 Ω
|
L54-5 (ATX+) - Body ground
| Always
| 10 kΩ or higher
|
L54-15 (ATX-) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
