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 | See page |
|---|---|---|
| All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder | Front door lock assembly LH*1 | |
| Front door lock assembly RH*2 | ||
| Harness or connector | ||
| Main body ECU (instrument panel junction block assembly) | ||
| Only Driver Door LOCK/UNLOCK Functions do not Operate | Front door lock assembly LH*1 | |
| Front door lock assembly RH*2 | ||
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Only Passenger Door LOCK/UNLOCK Functions do not Operate | Front door lock assembly RH*1 | |
| Front door lock assembly LH*2 | ||
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Only Rear Door LH LOCK/UNLOCK Functions do not Operate | Rear door lock assembly LH | |
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Only Rear Door RH LOCK/UNLOCK Functions do not Operate | Rear door lock assembly RH | |
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Only Back Door cannot be Operated | Back door opener switch assembly | |
| Back door lock assembly | ||
| Harness or connector | - | |
| Certification ECU*3 | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Double Locking Function does not Operate*4 | DTC B1249 | |
| DTC B2325 | ||
| Front door lock assembly LH | ||
| Front door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Harness or connector | - | |
| Double lock door control relay assembly |
*1: for LHD
*2: for RHD
*3: w/ Entry and Start System
*4: w/ Double Locking System