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techtalk:evo:trouble01 [2021/08/01 02:41] – [ECM Password Learn Procedure] ixl2relaxtechtalk:evo:trouble01 [2024/01/09 03:16] (current) – hippysmack
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 ====== ECM Password Learn Procedure ====== ====== ECM Password Learn Procedure ======
  
-The TSM/TSSM modules share a password with the ECM (and instruments) on fuel injected bikes (and ICM's on early rubber mount bikes).  When replacing an ECM/ICM or TSSM or Speedometer, you must go through a password learn procedure. If the procedure is not followed, the engine will start and run for a few seconds, and then stall.  This will typically throw a P1009 or P1010 diagnostic code.+The TSM/TSSM/HFSM modules share a password with the ECM/ICM and Speedometer (2004-later) during operation. When replacing an ECM/ICM or TSSM/HFSM or Speedometer, you must go through a password learn procedure. If the procedure is not followed, the engine will start and run for a few seconds, and then stall.  This will typically produce a P1009 or P1010 diagnostic code.
  
 The learn procedure MUST be followed from start to finish without any interruption.  If interrupted, starting over from the beginning is the only option. The learn procedure MUST be followed from start to finish without any interruption.  If interrupted, starting over from the beginning is the only option.
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 **Connect the motorcycle up to a trickle charger and pull the headlight fuse before starting these steps, which take more than 30 minutes to complete.** **Connect the motorcycle up to a trickle charger and pull the headlight fuse before starting these steps, which take more than 30 minutes to complete.**
  
-For information about removing/replacing the TSM/TSSM, click this [[http://xlforum.net/forums/showthread.php?t=573200|XLForum Thread]] by XLForum member 'Cosmo Kramer' on the topic.+For information about removing/replacing the TSM/TSSM, click this [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-electrical/sportster-motorcycle-electrical-and-ignition/79011-tsm-tssm-hfsm-how-to-disable-alarm-and-or-replace-unit?t=573200|XLForum Thread]] by XLForum member 'Cosmo Kramer' on the topic.
  
  
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 | HFSM or TSSM new unit installed |  YES  | | HFSM or TSSM new unit installed |  YES  |
 | ECM new unit installed |  YES  | | ECM new unit installed |  YES  |
-| Speedometer or Tachometer new unit installed |  YES  | +| Speedometer new unit installed |  YES  | 
-*If a TSM has been replaced with a HFSM, or a HFSM has been replaced by a TSM, password **is** necessary.+ 
 +\\
  
  

Trace: • REF: Tools - 160 • EVO: Engine Control