GS450H Motor Connectors

[xp677]

Luckily I have the harness from the gearbox to this oil pump controller. But do we have the diagram for the controller?

I know we covered it in the other thread, but just for those who see it here first, here's the diagram:

https://openinverter.org/wiki/File:Oilpump.png

For the wires to the pump itself (the red/white/black shielded cables for the motor, and the 5 feedback wires), just match the colours with your pump.

[Dilbert]

I measured the nominal value for the MG1 & MG2 thermistors and it came out @117K for an ambient temperature of 5-6C, which seems very high.

Has anyone else had a chance to measure the MG1 & MG2 thermistors?

[arturk]

I just checked mine and I am getting exactly the same results ~116K @ 6C
What the coincident that temperature in my garage is the same

[Dilbert]

It is hard to find data on the GS450H, but it looks like they are using they will use the same thermistor as the gen2 prius.

This NTC thermistor is 3900-3950K 47kohm!

[Dilbert]

Here is my function for calculating the temperature:-

float vcc = 5.0;
float adc_step = 3.3/1023.0;
float Rtop = 1800.0;
float Ro = 47000;
float To = 25+273;
float B = 3500;

float readThermistor(int adc){


float raw = adc;
float voltage = raw*adc_step;

float Rt = (voltage * Rtop)/(vcc-voltage);

float temp = (1/(1.0/To + (1.0/B)*log(Rt/Ro)))-273;

return temp;
}

[Dilbert]

If we want to get more information regarding the temperature rise on the motors, it might be worth changing the 1.8K pull-up to be something bigger.

With the 1.8K pull up the temp of the motor has to be > 90C before the ADC drops into range (<3.3V) where it can take a measurement.

I have verified the above calculation is correct, once the correct values for pull-up resistor is set.

[arturk]

Nice work!
Thanks for figuring it out.

[Dilbert]

Maybe a mod could move the above posts on the NTC to the vcu support thread

[PacEmaker]

If we want to get more information regarding the temperature rise on the motors, it might be worth changing the 1.8K pull-up to be something bigger.

With the 1.8K pull up the temp of the motor has to be > 90C before the ADC drops into range (<3.3V) where it can take a measurement.

I have verified the above calculation is correct, once the correct values for pull-up resistor is set.

Just to confirm - you're referring to R97 (MG1 temp) and R99 (MG2 temp) on Damien's V1 board?

[Dilbert]

R35 and R42 on the board I have (v2)

[slow67]

FYI it looks like another part number for the resolver connectors is 12520WQA08F-GR

Or with a pigtail Ford WPT-1349

https://www.corsa-technic.com/item.php?item_id=1001

Ive ordered the connector kit to see if it works.

[arturk]

Those are original Sumitomo connector an will work just fine.

[streber]

Just wanted to share that I managed to find all of the connectors in one place for a decent price.

https://www.auto-click.co.uk/6189-1240
https://www.auto-click.co.uk/90980-12362
https://www.auto-click.co.uk/6189-1092

They did take a month to ship them and were entirely silent during that month despite several emails and claims that they aren't answering their phones due to Covid-19. So maybe they are stocked up now that I finally got mine?

[Dilbert]

Just wanted to share that I managed to find all of the connectors in one place for a decent price.

https://www.auto-click.co.uk/6189-1240
https://www.auto-click.co.uk/90980-12362
https://www.auto-click.co.uk/6189-1092

They did take a month to ship them and were entirely silent during that month despite several emails and claims that they aren't answering their phones due to Covid-19. So maybe they are stocked up now that I finally got mine?

Yes them part numbers are correct, I have an invoice on my desk from them and just checked. I would purchase an extra resolver connector as they can be difficult to crimp or at least purchase extra pins 8100-3455. I placed my order on the 24th and it arrived yesterday in dublin, so about 1 week.

[streber]

Does anyone know the part numbers for the harnesses that plug into the transmission and inverter?

I've figured out:
8216430040 is the harness from the battery to the inverter and is the two smaller white connectors.
8211130* appears to be the main engine harness and I think contains the connectors from the EV ECU and the Inverter (big plug), but can't confirm that or exactly which variant if it matters.
8212130D10 appears to be the ICE harness and does not appear to be the right one.

No clue for the rest of the transmission, although those seem much easier to replicate than the shielded stuff in the EV ECU <-> Inverter connection.

FWIW I figured out that 82111-30* (at least the RHD LS600h one I bought) does contain the inverter plug and the connector and relay for the oil pump. I also learned that despite the wiring diagrams saying the inverter for the LS600h and GS450h share a pinout, they don't. I was able to repin the plug and get it to work. It does not contain the transmission connectors, but it appears the 82121 one from that car does (but didn't buy it so not 100% sure).

[TFirenza]

large connector for oil pump motor controller (90980-12483) found this hard to locate so if its useful to anyone else, its also found in Toyota Camry power steering harness

https://www.ebay.co.uk/itm/Used-Power-S ... 2749.l2649

[TonyV]

Looking for pin out or a picture of the 450H inverter internal wiring harness.
I had cut the end off to install the amp seal connecter but didn't mark the wires correctly.
And now I can't figure it out, because Toyota used same color wires for different signals.
below is a picture of a Camry Inverter internal wiring harness. 450H has a different layout.



Please help!

[TonyV]

Found this on the Wiki somewhere.
But for the life of me I can't find it again.
Thank god I saved it on my computer before i closed the page.
THANK YOU to whomever put this up!

Anyways this is for the next guy that screws up royally like I did.

[xp677]

You're welcome

[Jack Bauer]

That should be available on the wiki. Can someone please add if its not? Thanks.

[xp677]

I did originally upload it. The file inverter_connections.png is still there (I can't upload a new copy due to the name being in use) but the reference has been removed, I'm not sure how to fix this.

[TonyV]

For those of you who were scratching their heads trying to figure out why there are 2 "SP" pins on the wiring harness diagram... well

Pin 1 is NOT used!

Sorry for the poor quality picture.

On my transmission (and I'm sure others must be the same) the actual Pin 1 was missing on the transmission side of the connector and I thought it had broken off somehow.
So I removed the connector from the transmission and I can confirm that there only 10 wires going to the connector from inside the transmission.
I should've taken better pictures but I didn't think I was going to post this, but then thought someone else might be having the same issue.
If I had the factory wiring harness with the connectors this wouldn't have been a issue.

[TonyV]

I was having some issues putting the Molex connectors together.
So I emailed Molex asking if there was a video on how to put it together.

They don't but, they did send me a PDF about the connector and how it goes together.

Just thought this might be useful for the group.

[sfk]

That's very comprehensive. Thanks for sharing

[ggeter]

Found this on the Wiki somewhere.
But for the life of me I can't find it again.
Thank god I saved it on my computer before i closed the page.
THANK YOU to whomever put this up!

Anyways this is for the next guy that screws up royally like I did.

TonyV -- congrats on getting the thing spinning!

Can you provide links to the shielded/twisted pair cabling you used for comms and resolver connections? Amazon gives plenty of results, but would be helpful to know what you used and/or recommend.