| PROCEDURE 
 (a) Reset the display settings (contrast and brightness) and check that the screen appears normal. OK: The display returns to normal. 
 
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Toyota Tundra Service Manual > Navigation System: Reverse Signal Circuit
   DESCRIPTION The navigation receiver assembly receives a reverse signal from the park/neutral position switch assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. PROCEDURE 1. CHECK VEHICLE ...