NAVIGATION SYSTEM Data Signal Circuit between Navigation Receiver Assembly and Extension Module

DESCRIPTION

The stereo component tuner assembly sends the image data signal to the navigation receiver assembly via this circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK NO. 1 NAVIGATION WIRE

   
   

   1. Disconnect the R1 navigation receiver assembly connector.

   2. Disconnect the R2 stereo component tuner assembly connector.

   3. 

      Text in Illustration

      *a	Front view of No. 1 navigation wire connector (to Navigation Receiver Assembly)
      *b	Front view of No. 1 navigation wire connector (to Stereo Component Tuner Assembly)

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

      Standard Resistance

      Tester Connection Condition Specified Condition R2-1 (USV4) - R1-1 (USV4) Always Below 1 Ω R2-2 (US4-) - R1-2 (US4-) Always Below 1 Ω R2-3 (US4+) - R1-3 (US4+) Always Below 1 Ω R2-4 (UGD4) - R1-4 (UGD4) Always Below 1 Ω R2-5 (USG4) - R1-5 (USG4) Always Below 1 Ω R2-1 (USV4) - Body ground Always 10 kΩ or higher R2-2 (US4-) - Body ground Always 10 kΩ or higher R2-3 (US4+) - Body ground Always 10 kΩ or higher R2-4 (UGD4) - Body ground Always 10 kΩ or higher R2-5 (USG4) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPLACE NO. 1 NAVIGATION WIRE Click here

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here