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Check Engine Indicator (Mil lamp, SES lamp)
Cobra289 - 10/12/23 at 10:43 AM

Hi,

In our project LCCT we want to have a "Check Engine Indicator" LED at the dashboard.
We use the PCM (ECU) of a Focus Blacktop code "TEEM" build year +/- 2003.

Because the original "Check Engine Indicator" has been integrated at the "Instrument Cluster" I don't know how to wire the LED to get the light working.

We don't use the original "Instrument Cluster" and we don't have one to see how it works.

Has some one an idea?
Can I do something with the DLC (data link connector)?
How to convert a digital info from the PCM (ECU) to an analog signal (12v)?

Kind regards,
Carlos

gremlin1234 - 14/12/23 at 03:36 PM

if you just want a check engine lamp just to pass any inspection, the usual trick is to wire it to the oil pressure light.

if you want to do it properly you will need to look much further into the original systems, & canbus / obd diagnostics.

I suggest you get a wiring diagram of the doner car - which hopefully includes pinouts [individual pin assignments] of each module

Cobra289 - 14/12/23 at 04:12 PM

quote:
Originally posted by gremlin1234
if you just want a check engine lamp just to pass any inspection, the usual trick is to wire it to the oil pressure light.

if you want to do it properly you will need to look much further into the original systems, & canbus / obd diagnostics.

I suggest you get a wiring diagram of the doner car - which hopefully includes pinouts [individual pin assignments] of each module


I like the trick very helpful.

I have a wiring diagram PDF that I found on the net.
But I can't see any possibility to find a solution to have a SES lamp.

According to the drawings we got here first a Module "GEM" from there we have a connection to the "A30 Instrument Cluster"
Because they are Solid State components I don't see How I can manage to retrieve an analog signal to drive the LED lamp.

This is what I got.





Kind regards,
Carlos