If a normal system code is displayed during the DTC check, but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
Tech Tips
The following is the troubleshooting procedure for the wireless door lock control of a vehicle with the smart entry and start system.
For the troubleshooting procedure for the wireless door lock control of a vehicle without the smart entry and start system, refer to the wireless door lock control system (w/o Smart Entry and Start System).
Inspect the fuse and relay before investigating the suspected areas shown in the table below.
Use the table below to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.
| Symptom | Suspected Area | See page |
|---|---|---|
| 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 operate | Replace electrical key transmitter | - |
| Only wireless control function is inoperative | Transmitter battery | |
| Door control transmitter | ||
| Certification ECU (smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Door control receiver | - | |
| Main body ECU | - | |
| Answer-back function does not operate normally | Lighting system | - |
| Main body ECU | - | |
| Wire harness or connector | - | |
| Wireless door lock buzzer* | ||
| Automatic lock function only does not operate normally | Perform operation check | |
| Lighting system (door courtesy light switch) | ||
| Illuminated entry function only does not operate | Perform operation check | |
| Lighting system | ||
| Door ajar warning function only does not operate* | Perform operation check | |
| Lighting system (door courtesy light switch) | ||
| Meter/gauge system | - | |
| Panic alarm function only does not operate* | Perform operation check | |
| Theft deterrent system |
Tech Tips
*: for RHD