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.
| Symptom | Suspected Area | Link |
|---|---|---|
| No door lock/unlock functions operate via power window regulator master switch assembly or driver side door key cylinder | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch, Door Key Cylinder" | |
| No door lock/unlock functions operate via power window regulator switch assembly | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch" | |
| Only driver door lock/unlock functions do not operate | Front door lock assembly LH *1 | |
| Front door lock assembly RH *2 | ||
| Main body ECU (multiplex network body ECU) | ||
| Cowl side junction block LH | ||
| Harness or connector | - | |
| Only front passenger door lock/unlock functions do not operate | Front door lock assembly RH *1 | |
| Front door lock assembly LH *2 | ||
| Main body ECU (multiplex network body ECU) | ||
| Cowl side junction block LH | ||
| Harness or connector | - | |
| Only rear door LH lock/unlock functions do not operate | Rear door lock assembly LH | |
| Main body ECU (multiplex network body ECU) | ||
| Cowl side junction block LH | ||
| Harness or connector | - | |
| Only rear door RH lock/unlock functions do not operate | Rear door lock assembly RH | |
| Main body ECU (multiplex network body ECU) | ||
| Cowl side junction block LH | ||
| Harness or connector | - | |
| Speed-sensitive automatic door lock function does not operate properly | Perform operation check | |
| CAN communication system *1 | ||
| CAN communication system *2 | ||
| Meter/gauge system | ||
| Shift-linked automatic door lock/unlock function do not operate properly | Perform operation check | |
| CAN communication system *1 | ||
| CAN communication system *2 | ||
| Meter/gauge system | ||
| Double locking function does not operate properly*3 | Perform operation check | |
| Front door lock assembly LH | ||
| Front door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Front multiplex network door ECU LH | ||
| Front multiplex network door ECU RH | ||
| Harness or connector | - | |
| Lock Operation Continues even after Doors have been Locked*4 | Front door lock assembly LH | |
| Front door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Main body ECU (multiplex network body ECU) | ||
| Cowl side junction block LH | ||
| Harness or connector | - |
*1: for LHD
*2: for RHD
*3: w/ Double Locking System
Tech Tips
*4: 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.