Inspection Procedure

Fig 1: Identifying K53, K54 And K56 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the K53, K54 and K56 receiver connectors.
2. Measure the resistance of the receiver.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   K53-9 (TXM+) - K53-10 (TXM-)	60 to 80 Ω
   K54-5 (ATX+) - K54-15 (ATX-)	60 to 80 Ω
   K56-9 (TX+) - K56-10 (TX-)	60 to 80 Ω

NG: REPLACE RADIO RECEIVER ASSEMBLY 

OK: GO TO Next Step 

HINT:

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

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.

      OK: There is no open or short circuit. 

      Fig 2: AVC-LAN Wiring Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE