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 | Main body ECU (network gateway ECU) | - |
| Instrument panel junction block assembly | - | |
| All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch or Door Key Cylinder | Power window regulator master switch assembly | |
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| All Doors LOCK/UNLOCK Functions do not Operate Via Passenger Side Door Control Switch*1 | Power window regulator switch assembly | |
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only Driver Door LOCK/UNLOCK Functions do not Operate | Front door lock assembly (for driver side door) | |
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only Passenger Door LOCK/UNLOCK Functions do not Operate | Front door lock assembly (for passenger side door) | |
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Double Lock Function does not Operate Properly*2 | Front door lock assembly (for driver side door) | |
| Front door lock assembly (for passenger side door) | ||
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Lock Operation Continues even after Doors have been Locked*3 | Front door lock assembly (for driver side door) | |
| Front door lock assembly (for passenger side door) | ||
| Wire harness or connector | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - |
*1: w/ Passenger Side Door Control Switch
*2: w/ Double Locking System
Tech Tips
*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.