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Home >> Lexus >> 2005 >> LX 470 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> LEXUS Navigation System - Diagnostics >> Circuit Inspection >> 12. Map DISC cannot be inserted. >> Inspection Procedure
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Inspection Procedure

  1. Check the MAP DISC. 
    1. NG: Replace the MAP DISC. 
    2. OK: Go To Next Step. 
  2. Insert a MAP DISC without tilt. 
    1. OK: Normal. 
    2. NG: Go To Next Step. 
  3. Check the navigation ECU power source circuit (see  POWER SOURCE CIRCUIT (NAVIGATION ECU)   ). 
    1. NG: Replace or repair wire harness. 
    2. OK: Replace the navigation ECU. 
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