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 output when failure of the jam protection pulse switch circuit is detected.
The jam protection limit switch is built in the power window motor.
The pulse switch outputs ON/OFF pulse when the motor rotates.
DTC CONDITION DETECTION CHART
| DTC No. | DTC Detecting Condition | Trouble Area |
|---|---|---|
| B1238 | No change in limit switch more than 2.0 seconds even if opening glass down when limit switch is OFF (window glass is fully closed) |
|
HINT:
When the power window is operated UP or DOWN to detected the 30 cycle or more of the ON-OFF pulse, this DTC is cleared.