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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 858 (LEXUS Navigation System - Diagnosis) >> Circuit Inspection >> 22. Radio broadcast cannot be received. (Bad reception) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Is this condition worse in comparison with other vehicle? 
    1. YES : Receiving environment is bad. 
    2. NO : Go to next step. 
  2. Are there any parts installed additionally? (Sun shade film, telephone antenna, etc.) 
    1. YES : Does the condition get better if removing them? Influence of those parts. 
    2. NO : Go to next step. 
  3. Check if there is any scratch and breaking of a wire for glass antenna and defogger pattern. (Visual check) 
    1. YES : Repair (See "Defogger system") (See  INSPECTION  ) 
    2. NO : Go to next step. 
  4. Is contact of radio plug jack OK? 
    1. NO : Take measures for contact. 
    2. YES : Go to next step. 
  5. Is antenna terminal on glass surface in contact with the defogger terminal? 
    1. NO : Take measures for contact. 
    2. YES : Go to next step. 
  6. Is there continuity in antenna cord? 
    1. NO : Replace antenna cord. 
    2. YES : Go to next step. 
  7. Check grounding of antenna, antenna cord and noise filter. 
    1. NG : Grounding failure. 
    2. OK : Go to next step. 
  8. Does condition get better by replacing antenna cord? 
    1. YES : Replace antenna cord. 
    2. NO : Replace rear window glass. 
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