Note
As the door control battery is installed between the vehicle battery and main body ECU (instrument panel junction block assembly), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (instrument panel junction block assembly) before performing this troubleshooting procedure Click here.
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.
| Symptom | Suspected Area | See page |
|---|---|---|
| All doors lock/unlock functions do not operate via master switch or driver side door key cylinder. | Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch or Driver Side Door Key Cylinder" | |
| All doors lock/unlock functions do not operate via master switch and driver side door key cylinder. | Main body ECU (instrument panel junction block assembly) | - |
| All doors lock/unlock functions do not operate (other systems which main body ECU [instrument panel junction block assembly] controls do not operate.). | Proceed to "Power Source Circuit" | |
| Only driver door lock/unlock functions do not operate. | Front door lock assembly (for Driver Side) | |
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Only passenger door lock/unlock functions do not operate. | Front door lock assembly (for Front Passenger Side) | |
| 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 does not operated (for Wagon). | Back door opener switch assembly | |
| Back door lock assembly | ||
| Harness or connector | - | |
| Certification ECU (smart key ECU assembly) (w/ Entry and Start System) | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Double locking function does not operate (w/ Double Locking System). | LIN communication system | |
| Front door lock assembly (for Driver Side) | ||
| Front door lock assembly (for Front Passenger Side) | ||
| Rear door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Harness or connector | - | |
| Double lock door control relay assembly | ||
| Collision door lock release function does not operate. | Proceed to "Collision Door Lock Release Function does not Operate" |