Inspection Procedure

1. CHECK RADIO RECEIVER ASSEMBLY 
   Fig 1: Identifying F1 & F23 Receiver Connectors Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the F1 and F23 receiver connectors.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   F1-5 (ATX+) - F1-15 (ATX-)	Always	60 to 80 Ω
   F23-9 (TX+) - F23-10 (TX-)	Always	60 to 80 Ω

   NG: REPLACE RADIO RECEIVER ASSEMBLY  (See REMOVAL )

   OK: Go to Next Step 

2. CHECK HARNESS AND CONNECTOR 

   HINT:

   For details of the connectors, refer to TERMINALS OF ECU  (See TERMINALS OF ECU  ).

   1. Referring to the AVC-LAN wiring diagram, 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  (See PROBLEM SYMPTOMS TABLE  )