Audio And Visual System (W/O Navigation System) - Avc-Lan Circuit

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - AUDIO / VIDEO

DESCRIPTION

INSPECTION PROCEDURE

INSPECT RADIO RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

INSPECT MALFUNCTIONING PARTS

AUDIO AND VISUAL SYSTEM (w/o Navigation System) - AVC-LAN Circuit

DESCRIPTION

Each audio system component connected to the AVC-LAN (communication bus) transfers the switch signals by the audio visual communication local area network.


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


INSPECTION PROCEDURE

1.INSPECT RADIO RECEIVER ASSEMBLY
Audio And Visual System (W/O Navigation System) - Avc-Lan Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F1 and F55 radio receiver assembly connectors.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    F1-5 (ATX+) - F1-15 (ATX-)Always60 to 80 Ω
    F55-9 (TXM+) - F55-10 (TXM-)Always60 to 80 Ω
Text in Illustration
*1Component without harness connected
(Radio Receiver Assembly)
*2Component without harness connected
(Radio Receiver Assembly)
NG
REPLACE RADIO RECEIVER ASSEMBLY ()
OK
2.CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)
  • HINT:
  • 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.

Audio And Visual System (W/O Navigation System) - Avc-Lan Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
3.INSPECT MALFUNCTIONING PARTS

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

  • HINT:
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.
NG
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
OK
REPLACE MALFUNCTIONING PARTS