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DTC B1231 Jam Protection Door Limit Switch Circuit on Driver; DTC B1232 Jam Protection Door Pulse Switch Circuit on Driver: 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
B1231 Pulse sensor circuit in power window motor malfunctions
  • Power window regulator motor assembly LH (Driver side)
  • Wire harness
  • Power window regulator master switch assembly (D-door ECU)