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Old 12-03-2012, 01:51 PM   #1
st50pan
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TSSM/ECM swap

Hey everyone, My '03 drowned in Hurricane Sandy up to the velocity stacks. I don't think the TSSM or ECM was under water. Everything worked fine before as far as the key fob and security system. I just got an '02 with only one key (no fob). Can I swap my '03 TSSM and ECM into the '02 so I get the alarm function back? Can I just do one or the other? I have both manuals to reference. Maybe I should just get a spare key and forget it? Thanks for any advice. Sal
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Old 12-03-2012, 02:38 PM   #2
stever975
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Quote:
Originally Posted by st50pan View Post
...Can I swap my '03 TSSM and ECM into the '02 so I get the alarm function back? Can I just do one or the other? I have both manuals to reference. ...
Theoretically, yes you can swap either or both. If you just swap the ECM you'll need to "marry" the '02 TSM/TSSM to the '03 ECM as explained in this scanned image from the EDM (= Electrical Diagnostic Manual):



(You should get an EDM before messing with this.)

The change from '02 to '03 was the position of the IAT (intake air temperature) sensor. This was moved from the front cylinder intake runner to the upper air filter cover. The '03 ECM will be programmed with a calibration file that assumes the IAT is moved to the new location so you'll need to move the IAT. Moving the IAT isn't trivial since it's a pain to remove and then you need to plug the hole in the intake runner. The factory relocation "kit" (P/N 29434-01A) uses a new IAT sensor (P/N 27388-01) and a jumper wire to allow the original wire to reach the new location.

The '03 ECM calibration is also programmed with the V.I.N. of the '03 bike but this doesn't affect operation. If you wanted this changed you'd need to go to a dealer and have the ECM re-calibrated.
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Old 12-03-2012, 05:07 PM   #3
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Thanks for the quick response! I heard about the marry part (I have the EDM), didn't know about the IAT. If I wind up swapping both the ECM and TSSM, they should already be married and I would just need to move the IAT. The bike has a TSM, no security function. Security is something I like.
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