Intake Air Temperature Sensor
From 3SI Wiki
IAT INTAKE AIR TEMPERATURE SENSOR
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If you want to use an aftermarket IAT sensor when replacing the stock MAF you want to wire it like this:
1 Green With Yellow Stripe: 5V power for Baro Sensor (Pin 61 on 91-93 ECU)
2 Orange: Baro Singal to ECU (Pin 65 on 91-93 ECU)
3 Blue with Yellow Stripe: Airflow Signal to ECU(Pin 70 on 91-93 ECU)
4 Red: Power for Airflow sensor, (To Control Relay)
5 Black: Ground for IAT, Airflow and BARO signal (Pin 72 on 91-93 ECU)
6 Red with Blue Stripe: IAT signal going to ECU (Pin 52 on 91-93 ECU)
7 Red With White Stripe: Air Flow sensor Reset Signal (Pin 19 on 91-93 ECU)
8 Not used :
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Most Standalone ECUS use GM IAT sensor:
Found at GM parts Direct: http://www.gmpartsdirect.com/
GM IAT Sensor : 25036751
Pig Tail : 12102620
Categories: I | How to
