Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2001 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 248 (LEXUS Navigation System - Diagnosis) >> Circuit Inspection >> 16. Touch switch does not function. (Navigation screen only) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Display check mode (Touch switch, Touch point screen). 
    1. NG:  Replace multi display.
    2. OK:  Go to next step.
  2. Check "AVC-LAN communication circuit" (See  AVC-LAN (COMMUNICATION BUS) CIRCUIT  ). 
    1. CHECK:  Check continuity of the wire harness between the navigation ECU and the multi display.
      1. OK:  Continuity
    1. NG:  Replace or repair AVC-LAN circuit.
    2. OK:  Replace navigation ECU.
scientia non olet · About Mike's Workshop Manuals