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Home >> Lexus >> 2015 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Lane Departure Alert System (Diagnostic Codes & Circuit Tests) >> Lane Departure Alert System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U1104: Lost Communication with Driving Support ECU [08/2013 - ] >> Procedure
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U1104: Lost Communication with Driving Support ECU [08/2013 - ]: Procedure

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) 
    1. Use the Techstream to check if the CAN communication system is functioning normally. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] .

      OK

      DTC is not output.

    NG → See step   3 

    OK → See step   2 

  2. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] 
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSIS SYSTEM [08/2013 - ]