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LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

Head unit screen and climate control question

Old Apr 1, 2021 | 03:19 PM
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Default Head unit screen and climate control question

Question....Does anyone know which color wires that goes to connector in back the head unit that controls the front passenger seat airbag? I will attack a picture of it circled of the connector im taking about. Please if anyone know any info or have the wiring schematics could help....i just installed a after market android radio unit and im getting a srs airbag warning light. I need to find out which color wires are for the srs airbag so i can add a resistor so it can temporarily turn off the srs airbag warning light on my dash
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Old Apr 2, 2021 | 06:45 AM
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Originally Posted by aristo1987
Question....Does anyone know which color wires that goes to connector in back the head unit that controls the front passenger seat airbag? I will attack a picture of it circled of the connector im taking about. Please if anyone know any info or have the wiring schematics could help....i just installed a after market android radio unit and im getting a srs airbag warning light. I need to find out which color wires are for the srs airbag so i can add a resistor so it can temporarily turn off the srs airbag warning light on my dash
This is from a 2007 LS460 repair manual:




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Old Apr 2, 2021 | 10:43 AM
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Be EXCEEDINGLY careful when dealing with SIR system wiring.
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Old Apr 2, 2021 | 11:48 AM
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Originally Posted by lwphat66
This is from a 2007 LS460 repair manual:


thank you so much but im little confused..i just want to make sure. So 1, 2 and 3 is for the passenger airbag off/on sensor right?
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Old Apr 2, 2021 | 12:40 PM
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Originally Posted by aristo1987
thank you so much but im little confused..i just want to make sure. So 1, 2 and 3 is for the passenger airbag off/on sensor right?
I'm not familiar with the wires on this plug. I was hoping you knew what to make of it or perhaps someone else here could assist. Here are the other pages in this section. When I get home from work tonight, I'll see if I can find any actual schematics that give better clarification. For those with the Navigation System, the connector is labelled L59, and for those without Nav it's labelled L35. What the *1 & *2 are for is unclear.








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Old Apr 2, 2021 | 01:39 PM
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Can you also check for me where is the front passenger dash harness goes to? Does it go straight to the center console airbag ecu or does somehow connects with the passenger seat airbag harnesses underneath the seat?

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Old Apr 2, 2021 | 04:11 PM
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Originally Posted by aristo1987
Can you also check for me where is the front passenger dash harness goes to? Does it go straight to the center console airbag ecu or does somehow connects with the passenger seat airbag harnesses underneath the seat?
Looks like a lot of the SRS goes thru the center. Hope these help you....








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Old Apr 2, 2021 | 05:24 PM
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Originally Posted by lwphat66
Looks like a lot of the SRS goes thru the center. Hope these help you....





thanks for all the help i really appreciate it but man im little confused looking this lol.

I guess ill just do one at a time..ima start off with the yellow plug under the passenger seat and im going to add a resistor and see if the srs light will go away.
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Old Apr 2, 2021 | 05:49 PM
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Originally Posted by aristo1987
thanks for all the help i really appreciate it but man im little confused looking this lol.

I guess ill just do one at a time..ima start off with the yellow plug under the passenger seat and im going to add a resistor and see if the srs light will go away.
I think I would start with the NAV unit plug first, as it appears wires #20 and #9 are for the Passenger Air Bag ON/OFF indicator.






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Old Apr 2, 2021 | 07:02 PM
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Originally Posted by lwphat66
I think I would start with the NAV unit plug first, as it appears wires #20 and #9 are for the Passenger Air Bag ON/OFF indicator.




What will i do with those 2 wires? Please explain
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Old Apr 2, 2021 | 07:29 PM
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Originally Posted by aristo1987
What will i do with those 2 wires? Please explain
My bad, I just reread your original post. Did the manufacturer recommend installing a resistor, and why would their system affect the airbag indicator?
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Old Apr 3, 2021 | 04:56 AM
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[QUOTE=lwphat66;11025811]My bad, I just reread your original post. Did the manufacturer recommend installing a resistor, and why would their system affect the airbag indicator?[/QUOT

Hard to explain but this is the exact problem im having but this link is for a different lexus

https://www.clublexus.com/forums/is-...exus-is-5.html

Read post 69

Last edited by aristo1987; Apr 3, 2021 at 10:21 AM.
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Old Apr 3, 2021 | 06:08 PM
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Originally Posted by lwphat66
I think I would start with the NAV unit plug first, as it appears wires #20 and #9 are for the Passenger Air Bag ON/OFF indicator.




can you find me the color wire for the off one? I can now see the red one as the on one and the black one is the ground. Please post up pictures of the off color wire please.....thanks a lot
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Old Apr 4, 2021 | 07:56 AM
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Originally Posted by aristo1987
can you find me the color wire for the off one? I can now see the red one as the on one and the black one is the ground. Please post up pictures of the off color wire please.....thanks a lot
It's just an indicator light, not a switch; either a signal is received or it isn't. From all the pages posted above, only #20 and #9 are shown for the passenger airbag indicator. I don't think it's wise for someone to give advice for someone else's airbags unless they are 100% certain. I'm only trying to help by providing pics of what I have, so you will have to interpret it as you see fit. This is all I have, and if you require more, I suggest you invest in one of the online manuals which may provide the detailed information that it seems you are seeking.
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