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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Diagnostic Codes & Circuit Tests - (Hybrid) >> Air Conditioning System >> DTC B1473/73: A/C Inverter Start-up Signal System Malfunction [10/2015 - ] >> Description

DTC B1473/73: A/C Inverter Start-up Signal System Malfunction [10/2015 - ]: Description

The inverter activation signal is sent to the compressor with motor assembly from the hybrid vehicle control ECU assembly. Compressor control is stopped and the DTC is stored 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
  • Harness or connector between hybrid vehicle control ECU assembly and compressor with motor assembly
  • Compressor with motor assembly
  • Hybrid vehicle control ECU assembly
  • Hybrid control system
  • CAN communication system
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