DTC B1221 Power Window Switch Circuit on Driver Door: Description
DTC B1221 is output when switches of the power window master switch are on. When these switches are off, DTC B1221 is not output. Using DTC B1221, you can check whether these switches are normal or not.
DTC DETECTION CONDITION WITH TROUBLE AREA REFERENCE CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1221 | Any power window switch or door lock switch on master switch is operating | Power window regulator master switch assembly (D-door ECU) |