Problem Symptoms Table [10/2018 - 07/2022]
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
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 INSPECTION [10/2018 - ] |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only driver door UNLOCK functions do not operate | Front door lock with motor assembly LH | Refer to INSPECTION [10/2018 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [10/2018 - 07/2022] | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only front passenger door LOCK/UNLOCK functions do not operate | Front door lock with motor assembly RH | Refer to INSPECTION [10/2018 - ] |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only rear door LH LOCK/UNLOCK functions do not operate | Rear door lock with motor assembly LH | Refer to INSPECTION [10/2018 - ] |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only rear door RH LOCK/UNLOCK functions do not operate | Rear door lock with motor assembly RH | Refer to INSPECTION [10/2018 - ] |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only back door open function does not operate | Power Back Door System*1 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022] |
| Proceed to "Only Back Door cannot be Opened"*2 | Refer to Only Back Door cannot be Opened [10/2018 - 07/2022] | |
| 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 [10/2018 - 07/2022] |
| 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 | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch [10/2018 - 07/2022] |
| Multiplex network master switch 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 [10/2018 - 07/2022] |
| Door control switch assembly | ||
| Wire harness or connector | ||
| Instrument panel junction block assembly | ||
| Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally)*2 | CAN communication system*3 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022] |
| CAN communication system*4 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [10/2018 - 07/2022] | |
| Shift-linked automatic door lock/unlock functions do not operate (automatic transaxle system operates normally)*2 | CAN communication system*3 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022] |
| CAN communication system*4 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [10/2018 - 07/2022] | |
| ECM | - | |
| Only back door cannot be opened*1 | Check customize setting (Unlock Key Twice "ON") | Refer to CUSTOMIZE PARAMETERS [10/2018 - ] |
| Power back door system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022] | |
| Key lock-in prevention function does not operate | Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [10/2018 - 07/2022] |
| Lock operation continues even after doors have been locked*5 | Front door lock with motor assembly LH | Refer to INSPECTION [10/2018 - ] |
| Front door lock with motor assembly RH | Refer to INSPECTION [10/2018 - ] | |
| Rear door lock with motor assembly LH | Refer to INSPECTION [10/2018 - ] | |
| Rear door lock with motor assembly RH | Refer to INSPECTION [10/2018 - ] | |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | Refer to REMOVAL [10/2018 - 07/2022] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [10/2018 - 07/2022] | |
| Only remote door LOCK/UNLOCK functions do not operate (power door lock operation is normally)*6 | Telematics system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 10/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2019 - 07/2022] |
HINT:
- *1: w/ Power Back Door System
- *2: w/o Power Back Door System
- *3: for Gasoline Model
- *4: for HV Model
- *5: 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.
- *6: w/ Lexus Enform Remote