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Home >> Toyota >> 2012 >> Highlander Hybrid >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Automatic) (Diagnostic Codes & Circuit Tests) (Hybrid) >> AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) >> DTC B1473/73: A/C Inverter Start-up Signal System Malfunction >> Description

DTC B1473/73: A/C Inverter Start-up Signal System Malfunction: Description

The inverter activation signal is sent to the compressor with motor assembly from the hybrid vehicle control ECU. Compressor control is stopped and the DTC is output if there is an open or short in the signal circuit.

DTC No. DTC Detection Condition Trouble Area
B1473/73 Open or short in A/C inverter start-up signal system circuit
  • Harness or connector between hybrid vehicle control ECU and compressor with motor assembly
  • Compressor with motor assembly
  • Hybrid control system
  • CAN communication system
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