Gen 3 invertor fluid in tank not flowing?? Dead movement

In earlier generations, the inverter cooling pump had a single speed and was always running whenever the car was IG-ON or READY.

In a gen 3, the pump is variable speed, and only runs when needed for the coolant temperature, and only at a sufficient speed.

So in an earlier gen, you could just poke the power button and take a quick look under the hood for turbulence in the reservoir to know if your pump was working.

In a gen 3, it's a little harder. You can use a scan tool to look at the pump target RPM and actual RPM to see if it's turning. If the scan tool has active-test features, you can tell the pump to turn.

Are you asking the question because you have some reason to be worried about the pump?

 

thanks, i never read that gen 3 pump wasn't always running.
i'll never remember

 

I don't have much knowledge of the gen3, but I did have an inverter pump failure in my Gen2. If they haven't changed, the CEL came on based on increased temperature, not on any self test or pressure reading. If you have access to torque or some other scan tool where you can check inverter coolant temperature, look for temp readings as you drive. It should level off if things are working correctly. Hopefully you get a better informed answer soon.

 

are there multiple threads on this topic?

2011-no-flow-in-the-invertor-reservoir-bad-pump.251663

 

How hot is it? Did you just turn it on? Or has it been running?
I believe the Gen3 pump is like the engine coolant pump. Speeds vary.
So it the inverter is not getting hot, the pump won't run fast....

 

That makes no sense. Just be patient, bump your orig thread, anything but this.

That's a rare bird.