Input and Output locations of ECM
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From: Mechanicsburg,Pa usa
Car: 92'Camaro RS
Engine: a loud one
Transmission: bolted to the engine
Input and Output locations of ECM
Does anyone have or no where i can find the input and output ECM locations on a 89' IROC 350 TPI ?????
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From: Tulsa, OK
The ALDL diagnostic enable is pin A9 on the 165 ECM found in a stock 350 TPI IROC. It runs through pin E on the IP connector, to pin B on the ALDL connector. That's effectivly the ALDL "input".
When that pin is grounded the ECM goes into diagnostic mode. The serial data pin is A8 and it goes through pin J on the IP connector to pin E on the ALDL connector; and the SES light is pin A5, which goes through pin C on the IP connector to the SES lamp on your dashboard. Those are effectively the "outputs".
Other "inputs" for the ECM are the TPS sensor, MAF sensor, MAT sensor, CTS sensor, O² sensor, and the knock sensor via the ESC module.
When that pin is grounded the ECM goes into diagnostic mode. The serial data pin is A8 and it goes through pin J on the IP connector to pin E on the ALDL connector; and the SES light is pin A5, which goes through pin C on the IP connector to the SES lamp on your dashboard. Those are effectively the "outputs".
Other "inputs" for the ECM are the TPS sensor, MAF sensor, MAT sensor, CTS sensor, O² sensor, and the knock sensor via the ESC module.
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