Car Scanner Pro app, water pump rpm?

I don't know that adapter very well I would say since you have a display and you can get inverter RPM which to me is kind of funny inverter RPM nope it either works or it doesn't in the generation too and it gets changed accordingly I thought the 3 similar but bad location. I mite be that adapter.

 

Gen 3 inverter coolant pump is variable-speed and controlled very much the same way as the engine coolant pump.

 

Wth they had it good in the 2. should have left it alone . But it's more to play with and charge for so.

 

If you can see it on the screen in your app and is blacked out has no numbers etc maybe it blocked until paid for .

 

Is the adapter you're using have bi directional ?

 

I don't think I would count on that from those mfgrs. But yeah try it . If you're ice water pump is chunking out you'd hear it with 9 $ meccie stethoscope.

 

I'm using the paid version of Car Scanner, but I'm sure it only shows information for sensors that exist on the car. I'm not sure that every car has a sensor for engine coolant pump RPM. I've gone through the list several times on mine, and I haven't found it. It looks to me that Car Scanner has provision to use every sensor in the protocol, regardless if the car has it or not. It seems possible that the protocol contains readings that may not yet exist in any car.

 

Yeah, in gen 3, the target and actual rpm for the engine coolant pump are PIDs available from the ECM. Likewise, the target and actual rpm for the inverter coolant pump are available PIDs, but from the power management control ECU.

 

I expect that a firmware update may be available as protocols change

 

PIDs have numeric addresses. I think it would be an astonishing coincidence for the target/actual pump rpm PIDs in the ECM to have the same addresses as the target/actual pump rpm PIDs in the power management control ECU. If Car Scanner offers one pair and not the other, somebody would have to reverse-engineer the PID numbers for the other pair, then ask the Car Scanner folks to add those (or add them as custom PIDs yourself, if Car Scanner has that feature).

You could look through the big ol' thread where a lot of that reverse-engineering was done:

GenIII Prius Custom PIDs for Torque app | PriusChat

(The thread says "Torque app", but of course, once you know what the PIDs are, you know what the PIDs are. Then it's just down to the Torque vs. Car Scanner apps maybe having different ways for you to enter custom PIDs. Or maybe Car Scanner doesn't have that feature, and you'd have to ask the developer to add them.)

A bit ominously, though, I see the very last post on that thread is 2½ years old and was asking about the same two PIDs. Which probably means that someone with a supply of round tuits will still have to go reverse-engineer them.

 

I previously contacted Car Scanner on the subject and he claimed it worked. End of story.

 

I've checked yesterday. No data for Electric Water Pump rpm. Only for Inverter with a steady 3500 RPM.

 

Are you thinking that means the car is just running that pump at a steady 3500 RPM, or that the PID might be wrong and showing some other value that happens to come out as 3500 whatevers?

You could connect a signal generator to the power management control ECU's NIWP pin and vary the signal frequency and see if the displayed value corresponds, same way I did here (et seq.) for the engine water pump. Then we'd know whether that PID is right, at least....