RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

The cp

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Old Yesterday, 10:28 AM
  #31  
Margate330
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Originally Posted by Mesquite77
Dang, someone has made off with your JB covers! Try this, note the SM (I suggest you get it BTW) shoes 2 IGN relays, 1 in engine room and one in cabin:




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.


Last edited by Margate330; Yesterday at 10:36 AM.
Old Yesterday, 11:06 AM
  #32  
JusB
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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.
Old Yesterday, 11:40 AM
  #33  
Mesquite77
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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?







Last edited by Mesquite77; Yesterday at 11:46 AM.
Old Yesterday, 12:23 PM
  #34  
JusB
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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
Old Yesterday, 12:57 PM
  #35  
Mesquite77
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IG1 is above your left foot in the drivers side (left side) under the dash
Old Yesterday, 01:33 PM
  #36  
JusB
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Originally Posted by Mesquite77
IG1 is above your left foot in the drivers side (left side) under the dash

In this or elsewhere?
Old Yesterday, 05:18 PM
  #37  
JusB
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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.

Old Today, 02:06 AM
  #38  
Mesquite77
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You should get the SM for 2007, this is from 2008:


Old Today, 06:41 AM
  #39  
JusB
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What is SM?
Old Today, 06:55 AM
  #40  
tammap
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Originally Posted by 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.
There should be the 4th relay to the right!

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