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Old 08-31-2012, 05:47 AM   #1
mika66
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Default Ambient air

Hello experts,

Where is ambient air connector in 2012 Cross Roads?
Is ambient air "sensor" 30KΩ ptc/ntc resistor or what?
I`m not ready to pay 60 to my dealer for "original" status.
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Old 08-31-2012, 11:26 AM   #2
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In side the faring. The only way it works I believe is to have your gages unlocked
Its on the left side and it looks like a bare electrical connector
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Old 09-01-2012, 03:14 AM   #3
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No, ambient temp don`t need unlock.
It only need right "sensor".

So, if somebody know or will measure resistor value, that will save lots of guesswork.
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Old 09-01-2012, 07:40 AM   #4
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The Cross Roads needs the Ambient Temp unlocked in the speedometer as it normally is not an enabled feature of the stock Cross Roads. The temp sensor is not installed on the Cross Roads which is why you need one lol. As for the actual resistor value, I am not much help but just wanted to clear up what seemed like confusion on the Cross Roads.
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Old 09-01-2012, 08:09 AM   #5
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Quote:
Originally Posted by roboots21 View Post
The Cross Roads needs the Ambient Temp unlocked in the speedometer as it normally is not an enabled feature of the stock Cross Roads.
Actually just connecting the sensor enables it. The dealer thought this was the extent of the speedo reflash as the ambient temp suddenly showed up on the panel and never actually performed the upgrade. I've since explained to him that there was more than that.

Unfortunately my multimeter is at work, so I can measure it. I'll try and measure it next week when I return. I imagine I'm just looking for the resistance drop across the leads on the connector?
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Old 09-01-2012, 08:33 AM   #6
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Quote:
Originally Posted by mika66 View Post
Hello experts,

Where is ambient air connector in 2012 Cross Roads?
Is ambient air "sensor" 30KΩ ptc/ntc resistor or what?
I`m not ready to pay 60 to my dealer for "original" status.
I checked the service manual and the only "ambient air" sensor that I can find is in Chapter 5, Fuel System/Fuel Injection. It is located on the rear cylinder, intake port in TMAP sensor. (pg 5.42) I don't think that is the one you are looking for.

Looks to be (according to pg. 19.6 in service manual) that the ambient air signal goes to the speedometer via pin 14 on the speedometer plug. Perhaps that will lead you to a connector looking for an input. Please let us know your findings.

Ride safe.
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Old 09-02-2012, 10:04 AM   #7
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Ok, after little work i found that connector.
It is inside headlight and wires are orange/blue and brown/blue.
Wires go to speedo pins 7 and 14.
I try with potentiometer and
0 degrees is 29,85Kohm
10 degrees is 19,8 Kohm
20 degrees is 12,3 Kohm
Now little calculations and so.......
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Old 09-10-2012, 09:57 AM   #8
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Ok, now it`s done.
Thermistor should be 10770 Ω/25C, beta value 3467,79 (Y-curve). If i calculate it right.

I opened dead Fujitsu Siemens laptop battery and take NTC from there.
Look the pictures,

It`s not exact right, it gives +1C too much in reading. But that was best what i have at home, maybe someday i`ll change the right one.
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Old 09-10-2012, 10:15 AM   #9
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Quote:
Originally Posted by mika66 View Post
Ok, now it`s done.
Thermistor should be 10770 Ω/25C, beta value 3467,79 (Y-curve).
Outstanding detective work Dr Watson!

I just added one of these overpriced pieces from a Yami catalog, but I like your solution a lot better.

IMG_0909.jpg
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Old 10-06-2012, 12:07 PM   #10
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Ok,
little over one thousand kilometers later i`m little wiser.

If you do something like i did,

make some extra support for sensor (maybe tape is enough), vibration kills my sensor.
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