Inspection Procedure

1. Disconnect the radio receiver connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RADIO RECEIVER
   
   

   Tester Connection	Condition	Specified Condition
   TX+ - TX-	Always	60 to 80 Ω

   Fig 1: Identifying R19 Radio Receiver Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE RADIO RECEIVER 

   OK: GO TO NEXT STEP. 

HINT:

For details of the connectors, refer to the "TERMINALS OF ECU " .

1. 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.
      Fig 2: AVC-LAN Wiring Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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