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Home >> Lexus >> 2002 >> LS 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> LEXUS Navigation System - Diagnosis >> Circuit Inspection >> 12. Map DISC cannot be inserted. >> Inspection Procedure

Inspection Procedure

  1. Check MAP DISC visually. 
    1. NG:  Replace MAP DISC.
    2. OK:  Go to next step.
  2. Insert MAP DISC without tilt. 
    1. OK:  Normal.
    2. NG:  Go to next step.
  3. Check navigation ECU. 
    1. PREPARATION:  Disconnect the navigation ECU connector.
    2. CHECK:  Check the voltage of terminal +B.
      1. OK:  +B: 10-14 V
    3. CHECK:  Check the voltage of terminal ACC when the ignition switch is in ACC or ON position.
      1. OK:  ACC: 10-14 V
    4. CHECK:  Check continuity at terminal GND.
      1. OK:  GND: Continuity
    1. NG:  Replace or repair wire harness or connector.
    2. OK:  Replace navigation ECU.
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