Quick reference wiring for aftermarket sensors with AEM EMS
for 1993-98 Toyota Supra turbo (2JZ-GTE)



AEM MAP SENSOR WIRING:

wiring at the ECU:

RED aem sensor wire to pin B-41 - (5 volt reference source)
BLACK aem sensor wire to pin B-65 - (sensor ground)
GREEN aem sensor wire to pin B-62 - (map sensor signal input)

note: colors may vary on sensors so always refer to your sensor instructions and always trace the wires back to the ECM to make sure you are connecting them to the correct wires.

AEM IAT SENSOR WIRING:

The IAT Sensor has 2 wires, there is no polarity on the sensor so it does not matter which wire you use for the signal source.

EASY WAY:
You can tap into the 2 existing sensor wires from your MAF sensor plug that is no longer being used.

PIN#3 on your MAF PLUG (PINK/BLUE)
PIN#4 on your MAF PLUG (BROWN/BLACK)

note: colors may vary on different years but these are the standard colors. Make sure to trace them back to the ECM to verify that these are the correct wires.


BETTER WAY:
Sometimes, the signal at the maf plug is inconsistent. So we recommend tapping the singal wires at the ECM to ensure a good signal.

At the ECU, you can tap these 2 wires for IAT sensor wires:
ECU pin B-45 - (Air temperature sensor)
ECU pin B-65 - (Sensor ground)

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note:
All technical info is posted to offer you some "GENERAL" insight. So take it with a grain of salt. The information posted here is very BASIC. We will not be held liable for any of the information provided. We do our best to provide accurate, complete, and timely information. However, we cannot guarantee the quality, content, accuracy, or completeness of the information. You should always confirm information from another source to gain sufficient technical insight.