Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The cost to diagnose the B1477 Toyota code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
The A/C Inverter Assembly monitors the controlling power voltage in the self circuit. It stops compressor circuit and outputs the Diagnostic Trouble Code (DTC) when the monitored voltage is outside the specified range. The output DTC is memorized as previous trouble. The compressor control may not resume unless the power switch is turned off. The OBDII code set when an open or short to ground in the inverters controlling power voltage circuit.
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