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Old 07-03-2018, 01:50 PM   #1
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Anybody know SR20DET ECU well?

I am currently re-wiring my S13, both body and engine harness. As I look over schematics again and again I start to wonder things. Maybe someone here knows about this stuff...

I have a 62 SR20DET ECU for reference.

- what does the ECU do with input from speedometer?
- ECU Pin 24: Malfunction Indicator Lamp. My understanding has always been that these ECU's don't have the ability to output to CEL. Does this pin function?
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