Note
If the body ECU has been replaced, it is necessary to initialize the body ECU.
As the door control battery is installed between the vehicle battery and body ECU, first perform the inspections to confirm that there are no malfunctions in the power source circuit for the body ECU before performing this troubleshooting procedure.*
*: w/ Door Control Battery
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 |
|---|---|---|
| Only wireless control function is inoperative | Proceed to "Only wireless control function is inoperative" | |
| Only answer-back function does not operate properly | Proceed to "No answer-back" | |
| Only automatic lock function does not operate properly | Perform operation check | |
| Key reminder warning system | ||
| Theft deterrent system (door courtesy switch circuit) | ||
| Body ECU*1 | ||
| Body ECU*2 | ||
| Only illuminated entry function does not operate | Perform operation check | |
| Lighting system (operation check) | ||
| Body ECU*1 | ||
| Body ECU*2 | ||
| Only door ajar warning function does not operate | Perform operation check | |
| Theft deterrent system (door courtesy switch circuit) | ||
| Body ECU*1 | ||
| Body ECU*2 | ||
| Only remote alarm function does not operate*3 | Perform operation check | |
| Theft deterrent system (how to proceed with troubleshooting) | ||
| Door control transmitter | - |
*1: for LHD
*2: for RHD
*3: w/ Remote Alarm