Toyota Prius 2010 Repair Manual page 121

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 power management
control ECU. 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
Open or short in A/C inverter
B1473/73
start-up signal system.
WIRING DIAGRAM
2010 Toyota Prius
Trouble Area
Harness or connector between power management control ECU
and compressor with motor assembly
Compressor with motor assembly
Power management control ECU
Hybrid control system
CAN communication system
Repair Manual