WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Entry and Start System) DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to "See page" in the DTC chart.


  • Inspect the fuses and relays before troubleshooting the areas shown in the table below.

Wireless Door Lock Control System
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 (driver side junction block assembly)

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