hi guys, I'm having problems with my ECU sending low voltage at MAP sensor. Need help to find the location of the map hardware on the board to repair it if is fixable.

If anybody can post the numbers of MAP location, this will be very helpful.

Thanks in advance
Carlos

 

What exactly do you mean by sending low voltage? Do you mean you aren't getting +5v at the MAP sensor or that you are getting low reading from the MAP sensor at the ECU?

 

The MAP plug disconnected isn't getting 5v in the red/green with the switch on and body ground.

according to the FSM you need to get 5v on both sides of the plug with switch on and body ground or using the center wire as ground. I'm getting 5v on Yell/red but 3.52v on red/green.



Click the image to open in full size.



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This is the test I'm performing:

http://img183.imageshack.us/img183/3968/81870256ab2.jpg

http://i288.photobucket.com/albums/l...Picture3-1.png

http://i288.photobucket.com/albums/l...e/Picture4.png

 

Anybody!!! can tell me the location of the MAP sensor on the board?

 

Your best bet is to try a different ecu, and verify that the issue is the ecu. Xencron may be able to fix it, if in fact the ecu is bad. It may be more cost effective to just replace the ecu. What ecu are you using now?

 

I'm using a P06 chipped and vtec converted.

My best bet it's to try another ECU, but not have any friend with obd1 ECU.

Xenocron was my first tough but cost effective is better buy a new one for $140.00 since I'm in P.R.