WAS: 2002 Low Rider Won't Start

 Problem turned out to be a dead crank position sensor (CKP).

I initially replaced the ignition coil because I wasn't seeing any
spark at the spark plugs, but that was not the fix.

Since I was feeling my way in the dark, I bought the HD Dyna Diag.
Electrical manual for the bike.  The Check Engine light put out a DTC
44 error code pointing to the turn signal module (TSM/TSSM) as the
problem.  I bought a used TSM/TSSM.  The engine still turned over, but
there still was no spark.

I dropped back to the higher-level manual diag. Flowcharts.  One set
of charts started where I was stuck (engine turning over, but no
spark).  After cobbling together a one-connector "break out" box, the
flowchart readings pointed me to the crank position sensor.  Although
it created 2.5 VAC at starting crank rpm's, it showed infinite ohms
resistance.  The proper ohm reading should be 600 to 1200 ohms.

I ordered and installed the new CKP.  After turning on the fuel tap
and re-connecting the gray and black ignition module connectors, the
bike coughed and sputtered back to life.  Since I was working the
basement, I couldn't run the bike for more than a few seconds, but it
was great to smell those exhaust fumes.

I've searched the archives and couldn't find the post with the name of
the person who thought the no-start problem was caused by a bad CKP.
Whoever you are, you had a good feel for the fix early on.

Everyone rider safe and far,

Manjo 2002 Low Rider running again.

 Manjo wrote:

Good write-up, I'm renaming this thread to make it easier to google
search later on.

I think this is the same problem dp had in '06 on the way back from EKIII.

I'll get the next round.

Fins BS#221