Next check to see if the MAP sensor is getting power and is outputting the
correct MAP voltage (around 2v at 100kPa). +12v power is on pin 1, ground
is pin 4, and the MAP voltage is pin 2. If those are all OK then make sure
that the MAP signal voltage is getting through all of the harness connectors
and actually into the ECU main board (ECU pin 2-o). If that's OK then
there's a high probability that the CPU chip's pins are oxidized and not
making proper contact with the socket ... or that th eplastic base of the
socket is cracked.
----- Original Message -----
From: "Jonathan Freinkel" <[email protected]>
To: "Ray" <[email protected]>
Sent: Thursday, March 25, 2010 7:33 AM
Subject: Re: LINK ecu problem with MAP sensor
Looks like all those changes have been made.
On 3/25/10, Ray <[email protected]> wrote:
Those are the boards used for 1.6b and 1.8a models. Check to see if all
of
the 1.6b to 1.8a conversion steps 1-9 have actually been done on the main
board.
----- Original Message -----
From: Jonathan Freinkel
To: Ray
Sent: Wednesday, March 24, 2010 7:09 PM
Subject: Re: LINK ecu problem with MAP sensor
There are the boards.
This one has me stumped!
----- Original Message -----
From: Ray
To: Jonathan Freinkel
Sent: Wednesday, March 24, 2010 7:31 PM
Subject: Re: LINK ecu problem with MAP sensor
If possible, post photos of the Link main board and of the MAP
sensor.
There were several different versions.
----- Original Message -----
From: Jonathan Freinkel
To: [email protected]
Sent: Wednesday, March 24, 2010 12:07 PM
Subject: LINK ecu problem with MAP sensor
I recently bought a used link. I'm told it came out of a working
car.
Its going into my Locost which has a 94 miata engine and wiring harness
in
it.
So i moved the wire that needed to be moved. and plugged it in. I
can
get everything to boot fine but when I go to check the MAP sensor reading
it
says 8kpa.
The instructions say it should be around 100 at sea level.
Ive checked-
the solder joints on the ecu,
the solder joints on the map sensor.
the integrity and continuity of the wiring to the map
I get 5.5volts on pin 2 and 3 of the actual map sensor. pin 1 has
2.2volts at idle.
My first guess would be a wiring issue but for the life of me I
cant
find the culprit.
Ive tried adding grounds to the ecu and battery and still seeing
8kpa
Another problem I am finding is my air temp sensor is always
reading
100. Even if i plug it directly into the ecu (via a pair of prongs).
I get continuity and everything looks fine.
Please help! I'm absolutely stumped!
~J
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