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Home >> Lexus >> 2013 >> GS 350 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Exterior) (Diagnostic Codes & Circuit Tests) >> Lighting System >> DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Skid Control ECU; DTC U0130: Lost Communication with VGRS; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Main Body ECU >> Procedure
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DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Skid Control ECU; DTC U0130: Lost Communication with VGRS; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Main Body ECU: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .

    NEXT: Go to next step 

  2. CHECK FOR DTC 
    1. Check for DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .

      OK

      DTC output does not occur.

    NG → See step   3 

    OK → See step   4 

  3. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2011 - ] 
  4. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2011 - ]