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Home >> Scion >> 2012 >> tC Automatic Trans >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Diagnostic Codes & Circuit Tests) >> Air Conditioning System >> DTC U0100: Lost Communication with ECM; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter >> Description

DTC U0100: Lost Communication with ECM; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter: Description

The air conditioning amplifier communicates with the ECM, main body ECU (multiplex network body ECU) and combination meter assembly through the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
U0100 Lost communication with the ECM.
  • CAN communication system
  • ECM
U0142 Lost communication with the main body ECU.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
U0155 Lost communication with the combination meter.
  • CAN communication system
  • Combination meter assembly
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