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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 B2555: A/C ECU Communication Stop >> Description

DTC B2555: A/C ECU Communication Stop: Description

The sliding roof control ECU assembly receives outside temperature signal via BEAN communication from the air conditioning amplifier assembly and changes operation permission condition of the metaltop system.

DTC No. Detection Condition Trouble Area
B2555 When the engine switch is on (IG), the outside temperature signal is interrupted for 5.5 seconds or more.
  • Air conditioning amplifier assembly
  • Sliding roof control ECU assembly