Note
If the main body ECU (multiplex network body ECU) is replaced, refer to the Entry and Start System (for Entry Function).
Tech Tips
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 |
|---|---|---|
| All doors lock/unlock functions do not operate via door control switch or door key cylinder. | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door Key Cylinder" | |
| All doors lock/unlock functions do not operate via door control switch. | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch" | |
| All doors lock function do not operate via door control switch and door key cylinder. | Instrument panel junction block assembly*1 | |
| Instrument panel junction block assembly*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 | ||
| All doors unlock function do not operate via door control switch and door key cylinder. | Instrument panel junction block assembly*1 | |
| Instrument panel junction block assembly*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 |
*1: for LHD
*2: for RHD
| Symptom | Suspected Area | Link |
|---|---|---|
| Only driver door lock/unlock functions do not operate. | Front door lock assembly LH*1 Front door lock assembly RH*2 |
|
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 | ||
| Only driver door unlock function does not operate (lock function operates). | Instrument panel junction block assembly*1 | |
| Instrument panel junction block assembly*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 | ||
| Only front passenger door lock/unlock functions do not operate. | Front door lock assembly RH*1 Front door lock assembly LH*2 |
|
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 | ||
| Only rear door LH lock/unlock functions do not operate. | Rear door lock assembly LH | |
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 | ||
| Only rear door RH lock/unlock functions do not operate. | Rear door lock assembly RH | |
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 |
*1: for LHD
*2: for RHD
| Symptom | Suspected Area | Link |
|---|---|---|
| Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally). | CAN communication system*1 | |
| CAN communication system*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 | ||
| Combination Meter Assembly | ||
| Shift-linked automatic door lock/unlock functions do not operate (hybrid transaxle system operates normally). | CAN communication system*1 | |
| CAN communication system*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 | ||
| EV control ECU | ||
| Key lock-in prevention function does not operate. | Proceed to "Room Oscillator does not Recognize Key" | |
| Front door courtesy light switch assembly LH*1 Front door courtesy light switch assembly RH*2 |
||
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 | ||
| Lock operation continues even after doors have been locked*3 | Front door lock assembly LH | |
| Front door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Harness or connector | - | |
| Instrument panel junction block assembly*1 | ||
| Instrument panel junction block assembly*2 | ||
| Main body ECU (Multiplex network body ECU)*1 | ||
| Main body ECU (Multiplex network body ECU)*2 |
*1: for LHD
*2: for RHD
*3: 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.