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Home >> Lexus >> 2010 >> IS 250C Standard >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Retractable Hardtop (Diagnostic Codes (B2536-B256E) & Circuit Tests) >> Retractable Hardtop System >> DTC B254D: Back Window Panel RH Pulse Sensor Abnormal Operation >> Description

DTC B254D: Back Window Panel RH Pulse Sensor Abnormal Operation: Description

The sliding roof control ECU assembly controls the speed of the back window panel using pulse signals that are generated by the rotation of the sliding roof drive gear assembly RH (back window motor RH).

DTC No. Detection Condition Trouble Area
B254D Pulse signals do not occur during sliding roof drive gear assembly (back window motor RH) operation or pulse signals show abnormal value.
  • Sliding roof drive gear assembly (back window motor RH)
  • Wire harness or connector
  • Sliding roof control ECU assembly