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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 B2550: Passenger Door ECU Communication Stop >> Description

DTC B2550: Passenger Door ECU Communication Stop: Description

The sliding roof control ECU assembly receives a front passenger window position signal from the power window regulator switch assembly via BEAN communication. The sliding roof control ECU assembly prohibits metaltop system operation when the front passenger window does not open to the specified position.

DTC No. Detection Condition Trouble Area
B2550 When the engine switch is on (IG), the front passenger window position signal is interrupted for 5.5 seconds or more.
  • Power window regulator switch assembly
  • Sliding roof control ECU assembly