Sound Signal Circuit between Navigation Receiver Assembly and Stereo Component Amplifier: Procedure

1. Disconnect the L40 navigation receiver assembly connector.
   Fig 1: Identifying L40 Navigation Receiver Assembly Connector

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2. Disconnect the L31 stereo component amplifier assembly connector.
   Fig 2: Identifying L31 Stereo Component Amplifier Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L40-8 (R+) - L31-5 (R+)	Always	Below 1 Ω
   L40-18 (R-) - L31-4 (R-)	Always	Below 1 Ω
   L40-9 (L+) - L31-3 (L+)	Always	Below 1 Ω
   L40-19 (L-) - L31-2 (L-)	Always	Below 1 Ω
   L40-10 (SLD) - Body ground	Always	10 kΩ or higher
   L40-8 (R+) - Body ground	Always	10 kΩ or higher
   L40-18 (R-) - Body ground	Always	10 kΩ or higher
   L40-9 (L+) - Body ground	Always	10 kΩ or higher
   L40-19 (L-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Navigation Receiver Assembly)
   *2	Front view of wire harness connector (to Stereo Component Amplifier Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2