Meth Failsafe and Patches
Easy enough MrFred, its wiser to use the lowest voltage possible for the preliminary testing to minimize any damage (even 0.5v would be better). Simple voltage drop trick is to add diodes in series with the battery, each diode will drop the voltage by 0.7 volts. Putting 2 diodes in series with youe battery would be 0.1-0.2 volts, enough to make a ripple on the evoscan graph without any damage.
So it seems all i am really doing is recording the particular ADC port in evoscan and sending a signal to each empty pinout until it registers on evoscan. I can do that in the morning.
We'll have to find a way to add a pin to the ecu harness, is there ANY wire that isn't used on that harness that we can steal???? Next task will be finding a distributor that sells the required pin so everyone can legitimately add a wire that we can officially ADD to the stock ECU harness.
So it seems all i am really doing is recording the particular ADC port in evoscan and sending a signal to each empty pinout until it registers on evoscan. I can do that in the morning.
We'll have to find a way to add a pin to the ecu harness, is there ANY wire that isn't used on that harness that we can steal???? Next task will be finding a distributor that sells the required pin so everyone can legitimately add a wire that we can officially ADD to the stock ECU harness.
Last edited by Jack_of_Trades; Dec 31, 2007 at 01:36 AM.
So how exactly am I adding these to the evoscan data setting tables so i can log these locations? I'm rusty,lol.
Ok, to be sure... I could temporarily change my MUT 00 location to FFFF8928 and MUT 01 to FFFF8929 in my MUT table in ecuflash. Then alter the 2byte load xml so it looks like this:
Or would it be best to make a seperate XML datalist item for MUT 00 and another for MUT 01 so each only has a single requestID?
Code:
<DataListItem DataLog="N" Color="" Display="ADC_Test" LogReference="ADC_Test" RequestID="00" RequestID2="01" Eval="x" Unit="volts" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="0" GaugeMax="5" ChartMin="0" ChartMax="5" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
Last edited by Jack_of_Trades; Dec 31, 2007 at 01:37 AM.
I can't sleep,lol. Did some digging and found that a company called 'AMP' makes the ECU connectors for most cars. They usually have a small wire crimp connector and a large wire crimp connector. The part #'s are Large pins: AMP p/n 173631-1 and small pins: AMP p/n 173716-1. If someone wants to find anyone who sells these in very small quantities, you'll be a hero haha. Tyco and Digikey sell them but in HUGE quantities. You can request a few free samples though.
EDIT: FOUND 'EM! try www.newark.com for the crimp-on pins. $10 cents a piece...pricey,lol. I just ordered 10 connectors so i can just make my own pinout for every blank location in my ECU harness for possible future use. Total cost, $1.35 shipped
EDIT: FOUND 'EM! try www.newark.com for the crimp-on pins. $10 cents a piece...pricey,lol. I just ordered 10 connectors so i can just make my own pinout for every blank location in my ECU harness for possible future use. Total cost, $1.35 shipped
Last edited by Jack_of_Trades; Dec 31, 2007 at 02:20 AM.
I can help on most electronic signals generation, just let me know.
I have also found a few pins for the EVO ECU - an old EVO project has since been abandon - looks like a possible restart. Let me know if any want to one or two to try. Just pm me your postal address.
I have also found a few pins for the EVO ECU - an old EVO project has since been abandon - looks like a possible restart. Let me know if any want to one or two to try. Just pm me your postal address.
Originally Posted by Jack_of_Trades;
I can't sleep,lol. Did some digging and found that a company called 'AMP' makes the ECU connectors for most cars. They usually have a small wire crimp connector and a large wire crimp connector. The part #'s are Large pins: AMP p/n and small pins: AMP p/n . If someone wants to find anyone who sells these in very small quantities, you'll be a hero haha. Tyco and Digikey sell them but in HUGE quantities. You can request a few free samples though.
EDIT: FOUND 'EM! try www.newark.com for the crimp-on pins. $10 cents a piece...pricey,lol. I just ordered 10 connectors so i can just make my own pinout for every blank location in my ECU harness for possible future use. Total cost, $1.35 shipped
EDIT: FOUND 'EM! try www.newark.com for the crimp-on pins. $10 cents a piece...pricey,lol. I just ordered 10 connectors so i can just make my own pinout for every blank location in my ECU harness for possible future use. Total cost, $1.35 shipped
Before ordering, check the location lugs on the wire plug, there are quite a few versions. See the red lines for the mis-alignment.
Last edited by Richard L; Dec 31, 2007 at 02:45 AM.
If making a regulator is easy, then sounds like a plan. Another route would be to go to radioshack and buy a 1-AA or 1-AAA battery holder. This will get you ~1.6 V which is good enough to determine which pin is the unused ADC pin corresponding to ADC 0F.
Rather than using just one wire, I wired up every unused pin. I used 22 ga wire. I stripped off about 1/2", folded the stripped part over on itself, and then pushed it into the plugs with the plugs removed from the ECU. Then I secured the wires to the harness using masking tape. This way, I was able to launch EvoScan (key "on", engine "off"), and test each wire one-by-one without having to climb under the ECU or constantly turn the key on/off to move a single wire to a different location. I tested each wire first with a voltmeter to determine if it was generating a voltage. I didn't mess with the ones that did. I probably should have then tested the resistance of the wires I wanted to hook up to the battery, but I didn't. Worked out fine though. No problems with the ECU that I can see. You might want to do it though for piece of mind.
You'll want to use the USDM Evo 8 pinout as your guide. There is a listing on the RRE website. Looks like there are only 10 unused inputs, so it should be much easier for you.
http://www.roadraceengineering.com/e...-ecuwiring.htm
Rather than using just one wire, I wired up every unused pin. I used 22 ga wire. I stripped off about 1/2", folded the stripped part over on itself, and then pushed it into the plugs with the plugs removed from the ECU. Then I secured the wires to the harness using masking tape. This way, I was able to launch EvoScan (key "on", engine "off"), and test each wire one-by-one without having to climb under the ECU or constantly turn the key on/off to move a single wire to a different location. I tested each wire first with a voltmeter to determine if it was generating a voltage. I didn't mess with the ones that did. I probably should have then tested the resistance of the wires I wanted to hook up to the battery, but I didn't. Worked out fine though. No problems with the ECU that I can see. You might want to do it though for piece of mind.
You'll want to use the USDM Evo 8 pinout as your guide. There is a listing on the RRE website. Looks like there are only 10 unused inputs, so it should be much easier for you.
http://www.roadraceengineering.com/e...-ecuwiring.htm
If you can put a 1K-10K resistor in line to your voltage source. This is to limit the current so if you make a mistake, it will not blow you ECU. ADC channels don't draw much current, so you will still see 80-90% of the voltage after the resistor.
EvoM Guru
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EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
Ok, to be sure... I could temporarily change my MUT 00 location to FFFF8928 and MUT 01 to FFFF8929 in my MUT table in ecuflash. Then alter the 2byte load xml so it looks like this:
Or would it be best to make a seperate XML datalist item for MUT 00 and another for MUT 01 so each only has a single requestID?
Code:
<DataListItem DataLog="N" Color="" Display="ADC_Test" LogReference="ADC_Test" RequestID="00" RequestID2="01" Eval="x" Unit="volts" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="0" GaugeMax="5" ChartMin="0" ChartMax="5" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
EvoM Guru
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Joined: Mar 2006
Posts: 9,675
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From: Tri-Cities, WA // Portland, OR
I'd take you up on the offer, but the pins on my Evo 9 ECU have a square profile.