AVC-LAN Circuit

AUDIO AND VISUAL SYSTEM (for Regular Cab and Double Cab): AVC-LAN Circuit

AVC-LAN Circuit

DESCRIPTION

Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.
When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as the communication is discontinued.

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT RADIO RECEIVER
(a) Disconnect the K4 receiver connector.





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





Result:





C -- REPLACE RADIO RECEIVER
B -- REPLACE RADIO RECEIVER
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

HINT: For details of the connectors, refer to the "TERMINALS OF ECU" (Audio and Visual System (for Regular Cab and Double Cab)).

(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 -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE