I wired up the ESM/ECU for my buddy's S2k and want confirmation if it is correct.
Here's how I wired it.



From reading the other posts on this board before i started, I edited this diagram which added the ECM into the pic for better confirmation...

I splice the green/red wire and now i have 2 ends. one end leading to the blue C31 harness connected to the ECM/ECU, the other end leading to the map sensor.

Here's what did
1) I connected the blue wire from the ESM to the green/red wire leading to the MAP Sensor
2) I connected the green wire from the ESM to the green/red wire leading to the harness adapter which plugs into the ECM/ECU.

Please confirm if i am correct

THanks
Joe

 

Comptech site is down right now. I dont have the wiring diagram. Can anyone confirm the above wiring?

 

You are correct!

 

after this wiring i got a CEL code p0108. Map/baro circuit high input. What can be causing this? bad connections? maybe esm not adjusted right?/?

 

Tim

 

Hello guys I am currently trying to figure out the wiring on this esm box that came with the ctsc kit. I see that we have to connect 4 wires, I don’t know anything about wiring and not sure where the map sensor is exactly. Can anyone show me what I’m looking at?

 

Someone with an old Comptech kit needs to chime in with this diagram. Or if your lucky there is still some record of this on a google search. Look for "S2000 Comptech ESM hook up, or splicing". Something to that effect, see what comes up. The black wire is probably grounded, so in that case just 3 wires need to be spliced in off the ecu harness.

If all else fails you can forgo this and pick up a $30 Block spacer that bolts up under the actual Map sensor on the TB. Its the mechanical version of this ESM which does the same job. It may be preferred anyway if you don't want to hack into your engine harness. They can be found on Ebay and maybe Amazon. Or right off Blox website.

 

I was actually able to get help from someone on Facebook. I was told the blue connector is the correct plug I’ll be tapping into. I matched it with the diagram provided in the installation guide comptech gave so now it all makes sense