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 | See page |
|---|---|---|
| Only Driver Door Lock/Unlock Functions do not Operate | Front door lock assembly (Driver side) | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - | |
| Only Front Passenger Door Lock/Unlock Functions do not Operate | Front door lock assembly (Front passenger side) | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - | |
| Only Rear Door LH Lock/Unlock Functions do not Operate*1 | Rear door lock assembly LH | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - | |
| Only Rear Door RH Lock/Unlock Functions do not Operate*1 | Rear door lock assembly RH | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - | |
| Only Back Door Lock/Unlock Functions do not Operate | Back door lock assembly | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - | |
| All Doors Lock/Unlock Functions do not Operate | Main body ECU (Multiplex network body ECU) | - |
| Driver side junction block assembly | - | |
| No Door Lock/Unlock Functions Operate Via Master Switch or Driver Side Door Key Cylinder | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder" | |
| Double Locking Function does not Operate Properly*2 | LIN communication system | |
| Front door lock assembly LH | ||
| Front door lock assembly RH | ||
| Rear door lock assembly LH*1 | ||
| Rear door lock assembly RH*1 | ||
| Harness or connector | - | |
| Double lock door control relay assembly | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Speed-sensitive Automatic Door Lock cannot be Operate*3 | LIN communication system | |
| Meter / gauge system | ||
| Main body ECU (Multiplex network body ECU) | - | |
| Driver side junction block assembly | - |
*1: for 5 Door
*2: w/ Double Locking System
*3: w/ Speed-sensitive Automatic Door Lock Function