2006 honda 599 micro s v2

[24c]

More interesting to me, is the video shows the gauge flickering at the high end, which suggests there is little or no resistance here, so maybe the OP could add a resistor pot in series, and try and stabilise this by reading & matching the dash temperature gauge vs Tunerstudio?
It could be there is a ground issue or spike that is causing the flicker too.
I am slightly confused, as these three wire devices cannot be hugely different, they'll still use NC resistance tech, I doubt they are digital.

[grom_e30]

my theory on that is that 2 ecu's stock and microsquirt are connected up at the same time and BOTH trying to pull the sensor up to 5v.

i don't believe the sensor is digital at all just 2 ntc thermistor's built in to 1 sensor.

[cj599]

here is how i have the temp hooked up sorry the bike is not in front of me to label the colors i think im gonna order a new sensor last night i did a ohms test like my book shows and im thinking the sensor might be bad

[grom_e30]

can you measure the pink to ground with the sensor unplugged with just the stock ecu powered up microsquirt unplugged or not powered?

[cj599]

can you measure the pink to ground with the sensor unplugged with just the stock ecu powered up microsquirt unplugged or not powered?

i will

[24c]

and what happens if you wire it like this?
possibly disconnect the gauge later, just to test, if no better that is.

dash_gauge_to_microsquirt.jpg

[grom_e30]

i think the temp gauge side of the sensor has a different resistant properties and is far less accurate, and again the ecu and the gauge will both be trying to pull the signal up to 5v and it will read funky, if it was me id make sure the pink wire from stock ecu is at 5v, then id make sure the blue&green is ground,

if thats the case id connect the microsquirt up to the wire labeled (5v + dc) and disconnect the stock ecu from that wire to test ms can read the sensor ok, and if it can id measure the bias resistor in the stock ecu id remove the bias resistor in the microsquirt and connect both ecu's up to the wire labeled (5v + dc) and re calibrate the microsquirt to use the stock ecu bias resistor, and then only 1 ecu is trying to pull up to 5v and both SHOULD be able to share the same sensor and the dash gauge can still do its own thing to.

[cj599]

No the temp gauge won't read anything its just eratic by its self and I hooked up the gm temp sensor it came with and it goes from 0 and flickers to 80 or 87 or what ever it wants to do

[cj599]

http://m.youtube.com/watch?v=V-sYAX1VRvg

[cj599]

5v from the microsquirt to a gm temp sensor to the microsquirt

[cj599]

Now the iat sensor don't work at all just shows 70*

[grom_e30]

so what have you done im confused... what exactly have you wired to what ect.

[cj599]

I got them working by grounding one side of the sensors?

[grom_e30]

yeah you need ground on 1 side of the sensor, then the other side the clt or mat wires going to the ecu are at 5v pulled up from the bias resistor in side the ecu.


did you measure the pink wire without the microsquirt connected just stock ecu?
also am i correct in thinking the blue&green wire on the temp sensor is the ground??

[cj599]

i guess i was looking at the wrong diagram i thought iat ect both recieved 5v

also i still dont know the ohms range for the gauge in the dash witch i am now connected to but at least i am heading in the right direction

[grom_e30]

are you using the gauge part of the sensor to run your microsquirt temp??

[cj599]

yeah you need ground on 1 side of the sensor, then the other side the clt or mat wires going to the ecu are at 5v pulled up from the bias resistor in side the ecu.


did you measure the pink wire without the microsquirt connected just stock ecu?
also am i correct in thinking the blue&green wire on the temp sensor is the ground??

pink has 4.95 or 5 volts

i hooked it up how you modified my diagram i am getting a temp know just dont know the settings to put in the calibration stuff

how was my iat sensor reading the right temp with 5+v going to it the other day and then this morning all i did was turn it on and then it wasnt?

[grom_e30]

if your connected up to the green wire the service manual states

47.5-56.8 ohms @ 80c (68f)
14.9-16.1 ohms @ 120c (248f)

so if you measure how many ohms when the sensor is at room temp should give you 3 temp points to get some sorta calibraton for it.

[cj599]

if your connected up to the green wire the service manual states

47.5-56.8 ohms @ 80c (68f)
14.9-16.1 ohms @ 120c (248f)

so if you measure how many ohms when the sensor is at room temp should give you 3 temp points to get some sorta calibraton for it.

i will try that tomorro what should the resister be set to

[grom_e30]

it will be using the 2.49k the internal microsquirt bias one.