DTC B1231 Jam Protection Limit Switch Circuit on Driver Door: Description
This DTC is output while the main body ECU senses the limit position through the limit switch, which is built into the power window motor.
If the DTC is not output, the following may be malfunctioning:
DTC B1231 TROUBLE DETECTION REFERENCE
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1231 | No change in limit switch position for more than 2.0 seconds even if moving the glass down when limit switch is OFF (window glass is fully closed) |
|
HINT:
For details of inspection, See PROBLEM SYMPTOMS TABLE .
If the problem reoccurs even after replacement, replace the main body ECU.