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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Power Door Lock Control System - Diagnostics - Introduction >> Power Door Lock Control System >> Problem Symptoms Table [11/2023 - ] >> Problem Symptoms Table [11/2023 - ]

Problem Symptoms Table [11/2023 - ]

HINT: 

POWER DOOR LOCK CONTROL SYSTEM

Symptom Suspected Area Link
Only driver door LOCK functions do not operate Front door lock with motor assembly LH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Power distribution box assembly -
Only driver door UNLOCK functions do not operate Front door lock with motor assembly LH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Main body ECU (Multiplex network body ECU) -
Power distribution box assembly -
Only front passenger door LOCK/UNLOCK functions do not operate Front door lock with motor assembly RH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Power distribution box assembly -
Only rear door LH LOCK/UNLOCK functions do not operate Rear door lock with motor assembly LH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Power distribution box assembly -
Only rear door RH LOCK/UNLOCK functions do not operate Rear door lock with motor assembly RH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Power distribution box assembly -
All doors LOCK/UNLOCK functions do not operate via door key cylinder Main body ECU (Multiplex network body ECU) Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder [11/2023 - ]
Front door lock with motor assembly LH
Wire harness or connector
All doors LOCK/UNLOCK functions do not operate via master switch LIN communication system -
Multiplex network master switch assembly -
Main body ECU (Multiplex network body ECU) -
All doors LOCK/UNLOCK functions do not operate via multiplex network master switch assembly and door key cylinder Power distribution box assembly -
Main body ECU (Multiplex network body ECU) -
All doors LOCK/UNLOCK functions do not operate via door control switch Main body ECU (Multiplex network body ECU) Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch [11/2023 - ]
Door control switch assembly
Wire harness or connector
Power distribution box assembly
Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally) 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 - ]
Main body ECU (Multiplex network body ECU) -
Shift-linked automatic door lock/unlock functions do not operate (hybrid transaxle system*3 or automatic transaxle system*4 operates normally) 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 - ]
Main body ECU (Multiplex network body ECU) -
Hybrid vehicle control ECU*3 -
ECM*4 -
Only back door cannot be opened*5 Power Back Door System Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
Check customize setting (Unlock Key Twice Function "Disable") Refer to CUSTOMIZE PARAMETERS [11/2023 - ] 
Key lock-in prevention function does not operate Front door lock with motor assembly LH Refer to INSPECTION [12/2019 - ]
Front door lock with motor assembly RH Refer to INSPECTION [12/2019 - ]
Rear door lock with motor assembly LH Refer to INSPECTION [12/2019 - ]
Rear door lock with motor assembly RH Refer to INSPECTION [12/2019 - ]
Main body ECU (Multiplex network body ECU) -
Power distribution box assembly -
Wire harness or connector -
Lock operation continues even after doors have been locked*1 Front door lock with motor assembly LH Refer to REMOVAL [11/2023 - ]
Front door lock with motor assembly RH Refer to REMOVAL [11/2023 - ]
Rear door lock with motor assembly LH Refer to REMOVAL [11/2023 - ]
Rear door lock with motor assembly RH Refer to REMOVAL [11/2023 - ]
Wire harness or connector -
Power distribution box assembly -
Main body ECU (Multiplex network body ECU) -
Only remote door LOCK/UNLOCK functions do not operate (power door lock operation is normal)*2 Telematics system Refer to Remote Service Malfunction [10/2022 - ]

HINT: 

  1. *1: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 3 times.
  2. *2: for Remote Connect Compatible Type
  3. *3: for HV Model
  4. *4: for Gasoline Model
  5. *5: w/ Power Back Door System