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Hey guys new here big problem. I got a LQ4 from a yard. Supposed to get motor,harness,ecm,and pedal. We'll their guys cut the harness (have no clue why, it plugged into the tcm 12 inches away from where they cut it) that plugs into the tcm. Looking for the pin out for that plug. All the wires I matched color for color. There are 2 orange with black stripe and 2 blk solid. I have a set that rings back to the throttle body. If I knew where they were pinned the rest is process of elimination. Thanks in advance.
Last edited by H2Rob; Dec 31, 2024 at 12:21 PM.
Reason: Add on
That module there is called a TAC module controls throttle body and cruise it's not a transmission control module. You'll drive yourself nuts looking for schematics calling it wrong deal. Below will get you squared away
Pin 10 from TAC module is orange black goes to throttle body connector pin B orange black
Pin 12 from TAC module is orange black UART serial data to PCM connector C1 pin 14
Pin 15 from TAC module is black ground landed at ring terminal G108 to block
Pin 3 from TAC module is black goes to throttle body connector pin D black
Last edited by 01WS6/tamu; Jan 10, 2025 at 08:05 PM.
That module there is called a TAC module controls throttle body and cruise it's not a transmission control module. You'll drive yourself nuts looking for schematics calling it wrong deal. Below will get you squared away
Pin 10 from TAC module is orange black goes to throttle body connector pin B orange black
Pin 12 from TAC module is orange black UART serial data to PCM connector C1 pin 14
Pin 15 from TAC module is black ground landed at ring terminal G108 to block
Pin 3 from TAC module is black goes to throttle body connector pin D black
Yes you are correct. I had misunderstood which module i was working with. Bro your a life saver. And right again ive drove myself nuts looking back and forth through schematics. Thanks for getting this info. Lol i almost fell over. I have spoke with verious shops. None of which were any help. They just wanted me to bring it in. Again thanks
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05 h2 tcm to ecm got cut 
