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 |
|---|---|---|
| Only wireless control function inoperative | Proceed to "Only wireless control function inoperative" | |
| Only answer-back function does not operate normally | Proceed to "No answer-back" | |
| The automatic lock function does not operate normally | Perform the operation check | |
| Wire harness or connector | - | |
| Unlock warning switch circuit | ||
| Lighting system (door courtesy switch circuit) | ||
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| The illuminated entry function only does not operate | Perform the operation check | |
| Wire harness or connector | - | |
| Lighting system | ||
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only door ajar warning function does not operate*1 | Perform the operation check | |
| Lighting system (door courtesy switch circuit) | ||
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only panic alarm function does not operate*2 | Perform the operation check | |
| Lighting system (int) (interior lights) | ||
| Lighting system (ext) (headlights, taillights, hazard lights) | ||
| Horn system | ||
| Wire harness or connector (vehicle horn - main body ECU (network gateway ECU)) | - | |
| Main body ECU (network gateway ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only luggage compartment door open function does not operate | Perform the operation check | |
| Wire harness or connector | - | |
| Door control transmitter module set sub-assembly | ||
| Main body ECU (network gateway ECU) | - |
*1: w/ Door Ajar Warning Function
*2: w/ Panic Alarm Control Function