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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 B2548: Driver Side Junction Block ECU Communication Stop >> Description

DTC B2548: Driver Side Junction Block ECU Communication Stop: Description

The sliding roof control ECU assembly receives the luggage compartment door opener main switch signal via BEAN communication from the main body ECU RH (cowl side junction block RH) and changes operation permission condition of the metaltop system.

DTC No. Detection Condition Trouble Area
B2548 When the engine switch is on (IG), the luggage compartment door opener main switch signal is interrupted for 5.5 seconds or more.
  • MAIN BODY ECU RH (cowl side junction block RH)
  • Sliding roof control ECU assembly