Margate330

You were right on the money.
The IG2 relay in my diagram above directly powers the coils on the +B wire and is located under the brake reservoir like you said(hoping that's where it is, haven't had time to look).

The OP(original poster) said he was getting +5V to the coils but never said on what wire.
For the IGF wire this is already the correct voltage but for the +B wire it is not the correct voltage.

JusB

Hey I feel like I may be making some headway. That's all thanks you you guys.
Know this I am truly appreciative. I just got a bit of info that may have a bearing here,
Trying to be polite I dont want to bore anyone, or stir up a ruckus, but...
I found that the C/OPEN relay is apparently bad. With an ohm meter set to any range I get no reading across ANY two pins. I say this only because it had no markings to indicate which pins are what.I will get a replacement later and see if there is any change.
Again I thank you for the help, I may not know what I'm doing but I feel like there is hope now.

Be safe folks.

Mesquite77

Yah, the C/OPN relay controls EFI at least (looks like it gives it a ground).

Note you can swap relays around if they are same part no for diagnostic purposes. If you pull a plug and try to start do you smell gas?

JusB

It's like pulling hen's teeth to get info on this car.
Using my logic, which is the only logic I have...my next step is to check IG1 relay.
Not sure if it's relevant, but I replaced C/OPEN relay, and tried to crank it. The battery is low from all this, so I have it on charge now. Funny thing is that I connected the scanner, and it threw no codes this time. Maybe it didn't spin long enough? Still no power to coils or the fuel pump.
I searched for location of IG1 relay with no luck. Not giving up though...

Thanks

Mesquite77

IG1 is above your left foot in the drivers side (left side) under the dash

JusB

In this or elsewhere?

JusB

Hey hope your friday is better than mine.
Above my left foot is nothing but a flasher for the turn signals.
Behind the fuel door release there are three relays, 2 small blue, and hidden behind the loom is number three...
Three is much larger and gray.
Can you point out if any of these is IG1 please?
After replacing the C/OPEN relay there are some changes. First the tilt steering moves when you put the key in, and there is only one code for a coil, it says C
Evidently some circuit is powered that wasnt.
Now if I can only locate IG1
Thanks a zillion.

Mesquite77

You should get the SM for 2007, this is from 2008:

JusB

What is SM?

tammap

There should be the 4th relay to the right!

JusB

Hi folks.
My apologies, but I can't read a schematic.
But, I have news. IG1 and the other three in this location all test good with an ohm meter. So, I went back to IG2. The relay tests good. With the relay out I probed the pins, and found that there is +12v on pin 1, but nowhere else. I think this means that the relay has no +12v to send to the coils when the switch is thrown.
Can I introduce +12 volts to pin 3 and see if the coils are powered at this point?
Can you tell me where the +12v comes from that feeds pin5?

tammap

Here you go.

JusB

Hey thanks, I certainly appreciate it. I know it's a lot of effort.

Be safe

tammap

No worry, just let us know whatever you need.

JusB

Did you people know from jump street that this was likely a blown fusible link block?

Can anyone tell me where it is and what it looks like?

I wasted an hour on youtube watchins other 07 lexus folks replacing "blocks", but I don't know if mine had this. I certainly don't see it.
BTW it's pouring rain and I ain't going out to look...