Problem Symptoms Table [08/2019 - ]
NOTE:
If the main body ECU (multiplex network body ECU) is replaced, refer to the Engine Immobiliser System.
Refer to REGISTRATION [08/2019 - 08/2021] , or refer to REGISTRATION [08/2021 - 08/2022] , or refer to REGISTRATION [08/2022 - ]
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/unlock functions do not operate | Front door lock assembly LH | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| Driver side junction block assembly | Refer to REMOVAL [08/2019 - ] | |
| Only front passenger door lock/unlock functions do not operate | Front door lock assembly RH | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| Only rear door LH lock/unlock functions do not operate | Rear door lock assembly LH | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| Only rear door RH lock/unlock functions do not operate | Rear door lock assembly RH | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| Only back door lock/unlock functions do not operate | Back door lock assembly | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| All doors lock/unlock functions do not operate | Harness or connector | - |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Driver side junction block assembly | Refer to REMOVAL [08/2019 - ] | |
| All doors lock/unlock functions do not operate via master switch or door key cylinder | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder" | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder [08/2019 - ] |
| Speed-sensitive automatic door lock function does not operate (meter /gauge system operates normally) | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Driver side junction block assembly | Refer to REMOVAL [08/2019 - ] | |
| Shift-linked automatic door lock/unlock functions do not operate (automatic transmission system operates normally) | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| ECM (for 1UR-FE) | Refer to REMOVAL [08/2015 - ] | |
| Key lock-in prevention function does not operate | Front door courtesy light switch assembly LH | Refer to INSPECTION [08/2015 - ] |
| Harness or connector | - | |
| Driver side junction block assembly | Refer to REMOVAL [08/2019 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| Lock operation continues even after doors have been locked | Front door lock assembly LH | Refer to INSPECTION [08/2015 - ] |
| Front door lock assembly RH | Refer to INSPECTION [08/2015 - ] | |
| Rear door lock assembly LH | Refer to INSPECTION [08/2015 - ] | |
| Rear door lock assembly RH | Refer to INSPECTION [08/2015 - ] | |
| Back door lock assembly | Refer to INSPECTION [08/2015 - ] | |
| Harness or connector | - | |
| Driver side junction block assembly | Refer to REMOVAL [08/2019 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [08/2019 - ] | |
| When returning to the vehicle, although door unlock operation was not performed, doors were in an unlocked state | Main body ECU (Multiplex network body ECU) | Refer to Improper Operation [08/2019 - ] |
| When returning to the vehicle, although door lock operation was not performed, doors were in a locked state | Main body ECU (Multiplex network body ECU) | Refer to Improper Operation [08/2019 - ] |
| Only remote door LOCK/UNLOCK functions do not operate (power door lock operates normally) (w/ LEXUS ENFORM Remote) | Telematics system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - ] |
HINT:
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.