Inspection Procedure

CHECK RADIO RECEIVER ASSEMBLY

Fig 1: Identifying Radio Receiver Connector Terminal K53, K54 And K56

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Disconnect the K53, K54 and K56 receiver connectors.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

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

NG : REPLACE RADIO RECEIVER ASSEMBLY

OK : Go to next step

CHECK WIRE HARNESS
HINT:

For details of the connectors, refer to "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.
    OK: There is no open or short circuit.
    
    Fig 2: AVC-LAN - Communication Diagram
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NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

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