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 with the smart entry and start system, refer to the wireless door lock control system (w/ 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.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| B1242 | Wireless Door Lock Tuner Circuit Malfunction | 1. Wire harness or connector 2. Door control receiver 3. Main body ECU |