Inspection Procedure

1. Disconnect the multi-display connector and navigation ECU connector.
   Fig 1: Identifying Multi-Display Connector h1

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester connection	Condition	Specified condition
   z18-5 (MIC-) - h1-4 (MIC-)	Always	Below 1 Ω
   z18-3 (MIC+) - h1-5 (MIC+)	Always	Below 1 Ω
   z18-5 (MIC-) - Body ground	Always	10 kΩ or higher
   z18-3 (MIC+) - Body ground	Always	10 kΩ or higher

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Navigation ECU Connector z18

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