How many cooling systems does a Prius have?
two cooling systems
Prius have two cooling systems: one for the engine and one for the high voltage inverter. They have two separate fill points (see pic: Carolyn’s left hand is pointing to the inverter reservoir, right to the radiator cap).
What does the Prius inverter pump do?
Toyota Prius Inverter Water Pump Recall The Toyota Prius has a device on it called an “inverter” which takes high voltage direct current or DC from the traction battery and translates it into alternating current or AC.
What is the code for the inverter on a Prius?
The cooling system is blocked (kinked hose, e.g.) 4.) The cooling system has an air pocket Regardless of the reason, the lack of circulation will cause the inverter to overheat, setting a trouble code. On the second generation Prius (model year 2004-2009) that code is P0A93, information subcode 346: “Inverter Cooling System Performance.”
Why does the Toyota Prius set a p0a93 trouble code?
No matter what the reason, the inverter will overheat and cause your Prius to set a P0A93, Inverter Cooling System Performance DTC. Though the recall covered 2004-2007 Prius, these pumps can still fail on 2008 and 2009 years as well. Toyota did do a part redesign for the coolant pump (part number G9020-47031) to solve the issue facing Prius.
What causes a Prius water pump to fail?
If turbulence is missing, one of the following is true: 1.) The inverter water pump has failed 2.) The pump circuit is open (no power e.g.) 3.) The cooling system is blocked (kinked hose, e.g.) 4.) The cooling system has an air pocket Regardless of the reason, the lack of circulation will cause the inverter to overheat, setting a trouble code.
When to replace inverter pump on Toyota Prius?
NOTE: Inverter pump replacement is covered by Toyota for model years 2004-2007, until November 30th, 2013. For more info, see the dedicated blog: All hybrids have “inverters”—assemblies that translate high voltage direct current (DC) of the battery into alternating current (AC) for the motor/generator (s).