Circuit Description
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is detected when the Transponder key ECU does not detect the key unlock warning switch ON even with the ignition switch ON. (In normal condition, the key unlock warning switch should be ON when the ignition switch is ON.)
DTC CONDITION DETECTION CHART
| DTC No. | DTC Detecting Condition. | Trouble Area |
|---|---|---|
| B2780 | The key unlock warning switch On is not detected when the ignition switch is ON. |
|