FD ecu plug diagram

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May 11, 2009 | 02:08 PM

EZFD

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From: Lancaster, NY

FD ecu plug diagram

Does anyone have a diagram for what each pin of the stock, manual ECU goes to?? I need to figure out which one is the fan thermo switch.

May 12, 2009 | 12:00 AM

scotty305

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From: Bend, OR

https://www.rx7club.com/3rd-gen-archives-73/tech-manual-directory-614824/

There's an ECU pinout chart is in the "Fuel and Emission Control" section of the Service Manual. It's also in the factory Wiring Diagram.

From what I remember, the thermoswitch (the one-wire sensor with black plastic plug on the back of the water pump housing) goes to the fan relays not to the ECU. The Coolant temp sensor (two wire sensor with green plastic plug) is the one that connects to the ECU.

May 12, 2009 | 12:24 AM

EZFD

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From: Lancaster, NY

Quote:

Originally Posted by scotty305

https://www.rx7club.com/showthread.php?t=614824

There's an ECU pinout chart is in the "Fuel and Emission Control" section of the Service Manual. It's also in the factory Wiring Diagram.

From what I remember, the thermoswitch (the one-wire sensor with black plastic plug on the back of the water pump housing) goes to the fan relays not to the ECU. The Coolant temp sensor (two wire sensor with green plastic plug) is the one that connects to the ECU.

Thanks, I'll check it out.