1/2/2023 0 Comments Gm obd1 aldl pinout![]() ![]() You can also do it using the Red Devil River 12 pin ALDL Bluetooth adapter, ALDLdroid and any Bluetooth Android device to read the codes and also scan all the ECM inputs and outputs. Note your Android device has to support host mode. You can also do it using the Red Devil River 12 pin ALDL USB cable, ALDLdroid, and an Android device to read the codes and also scan all the ECM inputs and outputs. You can however use a Red Devil River 12 pin ALDL USB cable, TunerPro RT and a Windows laptop to read any codes and also scan all the ECM inputs and outputs. So you lose that simple diagnostic ability. ![]() Because of that GM didn't build in the A-B shorting diagnostic routine into the ECM. The Caddy's BCM (Body Control Module) was able to display the trouble codes on the heater control's display without shorting A-B. The Caddy ECM that you are installing in your Fiero will operate like the Caddy ECM it is. ![]()
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