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Home >> Lexus >> 2012 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Parking Assist Monitor System (Diagnostic Codes & Symptom Tests) >> Parking Assist Monitor System >> DTC U0073: Control Module Communication Bus Off; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U1110: Lost Communication with Clearance Sonar Module >> Procedure

DTC U0073: Control Module Communication Bus Off; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U1110: Lost Communication with Clearance Sonar Module: Procedure

  1. CHECK DTC OUTPUT 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    2. Check for DTCs. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC is output A
      No DTC is output B

      HINT: 

      • If CAN communication system DTCs are stored, they may also be stored in other systems.
      • If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
      • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

    B → See step   3 

    A → See step   2 

  2. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING