scanner not reading my car
Race Director
Joined: Apr 2002
Posts: 10,036
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From: Anaheim CA
Since you have a plain silver label on the EPROM, it was probably reprogrammed already. That means that we have no idea what is in there. The only way to find out is to remove the EPROM from the MEMCAL and read it electronically. Do you know anybody who can do that? If not, a store that sells electronic parts should be able to read it. If you can do that, have them email the .BIN file to you or put it on a thumb drive.
When you have the .BIN file you can change the extension from .BIN to .TXT and read it in Notepad or some other text editor. When you do that it will look like this:
1F080D6200A697F632… and many more.
The 32 is the important number. It's for Corvettes with the 1227165 ECM. Since your MEMCAL came from a different car that number might be different.
When you have the .BIN file you can change the extension from .BIN to .TXT and read it in Notepad or some other text editor. When you do that it will look like this:
1F080D6200A697F632… and many more.
The 32 is the important number. It's for Corvettes with the 1227165 ECM. Since your MEMCAL came from a different car that number might be different.
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
Since you have a plain silver label on the EPROM, it was probably reprogrammed already. That means that we have no idea what is in there. The only way to find out is to remove the EPROM from the MEMCAL and read it electronically. Do you know anybody who can do that? If not, a store that sells electronic parts should be able to read it. If you can do that, have them email the .BIN file to you or put it on a thumb drive.
When you have the .BIN file you can change the extension from .BIN to .TXT and read it in Notepad or some other text editor. When you do that it will look like this:
1F080D6200A697F632… and many more.
The 32 is the important number. It's for Corvettes with the 1227165 ECM. Since your MEMCAL came from a different car that number might be different.
When you have the .BIN file you can change the extension from .BIN to .TXT and read it in Notepad or some other text editor. When you do that it will look like this:
1F080D6200A697F632… and many more.
The 32 is the important number. It's for Corvettes with the 1227165 ECM. Since your MEMCAL came from a different car that number might be different.
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
Did you try scanning the car using vin code F? That is what's required for a Camaro. If it is as Cliff suggested a Camaro memcal it may scan. What's funny is I'm using a Corvette base AXCR and it scans using Vin F, but mine is speed density.
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
the new setup
maker GM
year. I type in 86
I enter Vin F
after that the scanner ask 5.0 yes or no. I enter yes.
I will used in my car later this afeternoon
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
One moment new finding here.
I got my self a magnifying glass. put the ship on the window with a clear sun light
I got to read the following on the silver tag
DELCO
BUC
9558 or 8558 not sure about this last one. hard to see the first digit
so I guest the ship is ok
I got my self a magnifying glass. put the ship on the window with a clear sun light
I got to read the following on the silver tag
DELCO
BUC
9558 or 8558 not sure about this last one. hard to see the first digit
so I guest the ship is ok
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
http://www.chevythunder.com/prom_bcc_1986.htm
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Let's go back to the SES light not flashing. Maybe there is a problem in the wiring between the ALDL connector and the ECM.
ALDL pin A should connect to ground.
ALDL pin B should connect to ECM pin A9.
One way to test this is to measure the voltage from ALDL pin A to ALDL pin B. It should be 5 volts (it comes from the ECM).
ALDL pin A should connect to ground.
ALDL pin B should connect to ECM pin A9.
One way to test this is to measure the voltage from ALDL pin A to ALDL pin B. It should be 5 volts (it comes from the ECM).
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
CLIFF I delite your messege by and accident. but here is the aswer to voltage test
Ok just test the A and B terminal on the ALDL. the reding is 5.02 volts.
regarding the SES light going off when the ingine is running. I haven got a chance to try that. remeber my baterry is to weak to start the engine. so I will recharge today. it will take into tomorrow to be fully charge
Ok just test the A and B terminal on the ALDL. the reding is 5.02 volts.
regarding the SES light going off when the ingine is running. I haven got a chance to try that. remeber my baterry is to weak to start the engine. so I will recharge today. it will take into tomorrow to be fully charge
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Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The connection between the ALDL connector and the ECM appears to be OK.
Next test: Short A & B and turn on the ignition. Don't start the engine. That should make the SES light flash out the error codes.
Here is a YouTube video that shows what this looks like (not a Corvette, but still good information):
There is a list of the error codes and what causes them on my web site:
http://home.earthlink.net/~cliff_har...onditions.html
These are specific to 1986, but also apply to other years.
Next test: Short A & B and turn on the ignition. Don't start the engine. That should make the SES light flash out the error codes.
Here is a YouTube video that shows what this looks like (not a Corvette, but still good information):
There is a list of the error codes and what causes them on my web site:
http://home.earthlink.net/~cliff_har...onditions.html
These are specific to 1986, but also apply to other years.
Last edited by Cliff Harris; Nov 3, 2013 at 11:14 PM.
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
hey after viewing the video I find out I was doing one step the wrong way
original what I do is jump the terminals and them turn key to on position
the way they doit on the video is turn the key to on position and them jump the terminal
when I get my battery charge at noon I will doit that way see what happend.
them I guest it have to be done the same way with the scanner
original what I do is jump the terminals and them turn key to on position
the way they doit on the video is turn the key to on position and them jump the terminal
when I get my battery charge at noon I will doit that way see what happend.
them I guest it have to be done the same way with the scanner
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
Just got my battery back
SES light is on when key in on position and when the engine is running also
did the aldl test with the key in on position . them I ground the a&b terminal on aldl. light no flashing. just stay on.
also did the test grond the a &b terminal and after that trun the key to on. same result. light on no flash
SES light is on when key in on position and when the engine is running also
did the aldl test with the key in on position . them I ground the a&b terminal on aldl. light no flashing. just stay on.
also did the test grond the a &b terminal and after that trun the key to on. same result. light on no flash
Drifting
Joined: May 2013
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Likes: 31
From: Reno Nevada
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I know you have a FSM. There is a troubleshooting procedure for SES light on all the time on page 6E3-A-20. I think you might have already been there, but I mention it just in case... ;-)
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
Doesn't the 94 have a special obd2 type 16 pin that may require a special scanner? While still obd1 it has a flashable pcm with an odd connector.
