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Home >> Toyota >> 2019 >> Camry LE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Lane Departure Alert System (W/ Steering Control) - Diagnostic Codes & Circuit Tests (Except Hybrid) >> LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter) [03/2017 - 10/2020] >> Procedure
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter) [03/2017 - 10/2020]: Procedure

  1. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM) 
    1. Clear the DTCs.

      Chassis > LKA/LDA > Clear DTCs 

    2. Perform the following procedure.

      HINT: 

      If the following procedure is not performed, the previously output DTC cannot be detected.

      1. Turn the ignition switch to ON and wait 1 minute or more.
      2. Drive the vehicle at a speed of 5 km/h (4 mph) or more for 5 seconds or more.
    3. Check for DTCs.

      Chassis > LKA/LDA > Trouble Codes 

      Result

      Result Proceed to
      DTC U0100, U0123, U0126, U0129, U0131, U0142 and U0155 are not output A
      DTC U0100, U0123, U0126, U0129, U0131, U0142 or U0155 is output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 06/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2017 - 08/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 09/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 03/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2020 - 10/2020] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ]