Thread: LM2 map sensor connection
09-22-2010, 02:17 AM #1
LM2 map sensor connection
Does anyone know which map sensor wires to connect the two LM2 analog input wires to? Got the RPM connection sorted but can't seem to find the map sensor connection anywhere on the forum.
Thanks for any help
09-22-2010, 02:49 AM #2
- Join Date
- Sep 2009
- Aussie Land
Can you go straight from the sensor? Just follow the hard black tube from the manifold to the sensor then?
09-22-2010, 10:54 PM #3
09-23-2010, 08:50 AM #4
You should be able to just go off the sencer.Thats how mine is.....As far as what one of th three wires is which???Pin Number 2 is ground(Black and Blue wire) and pin Number 3(White and Black wire) is your signal.....Then on your analog cable You can use any analog channel you want..Just make sure you use the same channel wire for both..Example CHannel 1 you would use the black and purple wires,Channel 2 the brown and grey wires,3 red and white wire and 4 the orange and peach wire....Once you have the wires connected dont forget to set your LM-2 up to recognize the new input....Hope this helps...
5.2.2 Wiring Analog Inputs
The LM-2’s inputs are differential. A differential input does not measure a signal relative
to electrical ground. Instead it measures the relative voltage between two signals. That
is, it does not measure the '+' signal in relationship to ground, but in relationship to the '-'
signal. It measures the 'difference' between them (hence the name differential input!)
Please note that the + lead is signal positive, NOT power
Looking at the connector with the clip up, pin 1 is the lower left.
PIN USE COLOR
1 Analog In 1 - Black
2 Analog In 2 - Brown
3 Analog In 3 - Red
4 Analog In 4 - Orange
5 Analog Out 1 - Yellow
6 Analog Out 2 - Dark Green
7 RPM - Blue
8 Analog In 1 + Purple
9 Analog In 2 + Grey
10 Analog In 3 + White
11 Analog In 4 + Peach
12 Analog Out 1 + Lime Green
13 Analog Out 2 + Brown/White
14 RPM + Black/White
Note: All these inputs and outputs are “differential”. That is, the negative inputs must
be connected to ground.
09-24-2010, 01:49 AM #5
That is all I need to know.
Speed Freak told me you would be the man Sno!
05-16-2011, 09:37 PM #6
Sno I hardwired my aux 1 for the Map sesnor as you explained above. So I used the black and purple for the Map sensor wires. Now what are the values needed in logworks for the Stock Map sensor? Right now In Logworks I see It is at -14.70 Kpa at 0.00 volt and 22.50 Kpa at 5.0v in my logworks.
05-17-2011, 06:02 AM #7
05-17-2011, 07:56 AM #8
02-06-2012, 05:11 PM #9
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