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Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC (SERVICE CHECK MODE) 
    1. Check for DTCs (see DTC CHECK/CLEAR  ).
    • NG: TROUBLESHOOT FOR EACH DIAGNOSIS 
    • OK: GO TO NEXT STEP 
  2. CHECK NAVIGATION SYSTEM VOICE 
    1. Is voice guidance operating normally?
    • OK: Go to step   5 
    • NG: GO TO NEXT STEP 
  3. CHECK WIRE HARNESS (NAVIGATION ECU - DRIVER SIDE DOOR SPEAKER) 
    1. See SPEAKER CIRCUIT  .
    • NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    • OK: REPLACE NAVIGATION ECU 
  4. REPLACE DRIVER SIDE DOOR SPEAKER 
    1. Temporarily install another speaker. Function OK?
    • OK: REPLACE SPEAKER 
    • NG: GO TO NEXT STEP 
  5. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - NAVIGATION ECU) 
    • NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    • OK: REPLACE NAVIGATION ECU 
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