Note
If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.
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. | Lighting system | |
| Power door lock control system | ||
| External electrical waves | ||
| Code registration | ||
| Transmitter battery | ||
| Harness or connector | ||
| Electrical key transmitter sub-assembly | ||
| Door control receiver | ||
| Main body ECU (Multiplex network body ECU) | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Wireless control function does not operate but entry function operates. | Electrical key transmitter sub-assembly | - |
| Only answer-back function does not operate properly. | Check customize setting (Hazard Answer Back) | |
| Check customize setting (Wireless Buzzer Resp) (w/ Wireless Door Lock Buzzer Answer-back Function) | ||
| Check customize setting (Wireless Buzzer Vol) (w/ Wireless Door Lock Buzzer Answer-back Function) | ||
| Lighting system | ||
| Wireless door lock buzzer (w/ Wireless Door Lock Buzzer Answer-back Function) | ||
| Main body ECU (Multiplex network body ECU) | ||
| Instrument panel junction block assembly | ||
| Combination meter assembly | ||
| Only automatic lock function does not operate properly. | Perform operation check | |
| Door courtesy switch circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Only illuminated entry function does not operate. | Perform operation check | |
| Lighting system | ||
| Only door ajar warning function does not operate. (w/ Door Ajar Warning Buzzer Function) | Perform operation check | |
| Door courtesy switch circuit | ||
| Wireless door lock buzzer | ||
| Only panic alarm function does not operate. (w/ Panic Switch) | Perform operation check | |
| Theft deterrent system |