AVC-LAN Circuit

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: AVC-LAN Circuit
- AVC-LAN Circuit

DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers switch signals by the AVC-LAN.

If a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function normally as communication is stopped.

INSPECTION PROCEDURE

NOTICE:
* The navigation receiver assembly is the master unit.
* After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.

PROCEDURE

1. INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Disconnect the L40 navigation receiver assembly connector (w/ "Bluetooth" Audio System).





(b) Disconnect the L38 navigation receiver assembly connector (w/ SDARS System).





(c) Disconnect the L41 navigation receiver assembly connector (w/ Advanced Parking Assist System).





(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





*2: w/ "Bluetooth" Audio System

*3: w/ SDARS System

*4: w/ Advanced Parking Assist System

NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

HINT
For details of the connectors, refer to Terminals of ECU Pinout Values and Diagnostic Parameters.

(a) Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.

(1) Disconnect all connectors in all AVC-LAN circuits.

(2) Check for an open or short in all AVC-LAN circuits.





OK:

There is no open or short circuit.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT MALFUNCTIONING PARTS

(a) Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.

HINT
* Check all slave units.
* If disconnecting a slave unit causes the master unit to return to normal operation, the slave unit is defective and should be replaced.

OK:

Master unit returns to normal operation.

NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal

OK -- REPLACE MALFUNCTIONING PARTS