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  #1  
Old May 21st, 2020, 09:23
WPZuerich WPZuerich is offline
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2001 AW4 to AX15 swap...unique issues

Hello,
I've researched extensively all the auto to manual swap threads but I believe I have a unique issue for putting a manual trans into a 2001 Cherokee. I believe I can fool the PCM into thinking the TC is still there by installing a relay but my understanding is the 2001 AW4 uses input and output speed sensors to check that the TC is indeed locked up. I'd expect an error code if the computer doesn't get a signal from the speed sensors.
What if I ground out both speed sensors? Would that keep an error code from popping up? Any other suggestions?
Thanks
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Old May 21st, 2020, 09:54
RCP Phx RCP Phx is offline
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Re: 2001 AW4 to AX15 swap...unique issues

Why would you want a AX-15 vs the NV3550 that came in the late models?
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Old May 21st, 2020, 10:55
WPZuerich WPZuerich is offline
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Re: 2001 AW4 to AX15 swap...unique issues

The donor jeep I'm using is a 99 with the AX15.
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Old May 21st, 2020, 11:45
WPZuerich WPZuerich is offline
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Re: 2001 AW4 to AX15 swap...unique issues

The transmission connector has ports for input speed sensor signal and input speed sensor ground. It has the same ports for the output speed sensor as well. I believe the speed sensors simply provide a voltage back to the computer and if the voltages of the input and output sensors are the same, then it reads the TC as locked up.

If I connect the signal port to the ground port, it should provide full voltage to the computer. I'm just wondering if that is too much voltage and the computer will think something is wrong?
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Old May 21st, 2020, 12:01
RCP Phx RCP Phx is offline
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Re: 2001 AW4 to AX15 swap...unique issues

I think your going to have to reverse engineer it. What is the wiring/tcu for a '00-01 with a NV3550?
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Old May 21st, 2020, 12:16
WPZuerich WPZuerich is offline
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Re: 2001 AW4 to AX15 swap...unique issues

The NV3550 has no TCU and just wiring for reverse lights and a clutch safety switch.

The AW4 wiring is so integrated into the jeep that I want to leave as much as I can in place. People who have done this in the past say everything runs fine except you'll get error codes related to the TC.

Ideally I'd like to get a computer out of a manual 2001 Cherokee. I've been searching for months now with no success. I'd even settle for a VIN.
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