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DTC B1473/73: A/C Inverter Start-up Signal System Malfunction [11/2016 - ]: 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 this DTC is stored if there is an open or short in the signal circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B1473/73 A/C Inverter Start-up Signal System Malfunction 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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