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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/O AFS) - Diagnostic Codes, Symptom Tests & Circuit Tests (1 Of 2) >> LIGHTING SYSTEM (w/o AFS) >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0120-87: Lost Communication with Starter / Generator Control Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0168-87: Lost Communication with Vehicle Security Control Module Missing Message; DTC U0199-87: Lost Communication with "Door Control Module A" Missing Message; DTC U0200-87: Lost Communication with "Door Control Module B" Missing Message; DTC U0208-87: Lost Communication with "Seat Control Module A" Missing Message; DTC U0230-87: Lost Communication with Rear Gate Module Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [11/2023 - ] >> Procedure

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0120-87: Lost Communication with Starter / Generator Control Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0168-87: Lost Communication with Vehicle Security Control Module Missing Message; DTC U0199-87: Lost Communication with "Door Control Module A" Missing Message; DTC U0200-87: Lost Communication with "Door Control Module B" Missing Message; DTC U0208-87: Lost Communication with "Seat Control Module A" Missing Message; DTC U0230-87: Lost Communication with Rear Gate Module Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [11/2023 - ]: Procedure

  1. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Main Body > Trouble Codes 

      OK

      DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM 

    For HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

    For Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

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