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 (for Driver door) | |
| Harness or connector | - | |
| Power window regulator master switch assembly | - | |
| Main body ECU | - | |
| Instrument panel junction block assembly | - | |
| Only Driver Door LOCK/UNLOCK Functions do not Operate | Front door lock assembly (for Driver door) | |
| 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 door) | |
| 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 LH | |
| Harness or connector | - | |
| Main body ECU | - | |
| Instrument panel junction block assembly | - | |
| Only Back Door cannot be Opened*1 | Back door lock assembly | |
| Back door opener switch | - | |
| Harness or connector | - | |
| Main body ECU | - | |
| Instrument panel junction block assembly | - | |
| Only Back Door cannot be Opened*2 | Entry and start system (for Entry function) | |
| Only Back Door LOCK/UNLOCK cannot be Opened Via Back Door Key Cylinder*3 | Door unlock switch sub-assembly | |
| Harness or connector | - | |
| Main body ECU | - | |
| Instrument panel junction block assembly | - | |
| Double Locking Function does not Operate Properly*4 | LIN communication system | |
| Front door lock assembly RH | ||
| Front door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Harness or connector | - | |
| Double lock door control relay assembly | - | |
| Lock Operation Continues even after Doors have been Locked*5 | Front door lock assembly RH | |
| Front door lock assembly LH | ||
| Rear door lock assembly RH | ||
| Rear door lock assembly LH | ||
| Harness or connector | - | |
| Main body ECU | - |
*1: w/o Entry and Start System
*2: w/ Entry and Start System
*3: w/o Wireless Door Lock System
*4: w/ Double Locking System
*5: When the 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.