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 | Link |
|---|---|---|
| Wireless control function and entry function do not operate | Proceed to "All Door Entry Lock / Unlock Functions and Wireless Functions do not Operate" | |
| Wireless control function does not operate but entry function operates | Electrical key transmitter sub-assembly | - |
| Only answer-back function does not operate properly | Proceed to "No answer-back" | |
| Only automatic lock function does not operate properly | Perform operation check | |
| Lighting system (Door Courtesy Switch Circuit) | ||
| Lighting system (Back Door Courtesy Switch Circuit) | ||
| Main body ECU (Multiplex network body ECU) | ||
| Only illuminated entry function does not operate | Perform operation check | |
| Lighting system | ||
| Main body ECU (Multiplex network body ECU) | ||
| Only door ajar warning function does not operate*1 | Perform operation check | |
| Lighting system (Door Courtesy Switch Circuit) | ||
| Lighting system (Back Door Courtesy Switch Circuit) | ||
| Main body ECU (Multiplex network body ECU) |
*1: w/ Door Ajar Warning Function