S&S Cycle IST Ignition System for 1984–99 4 1/8 Bore Big Twin Engines User Manual

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See Picture 15 for pin locations. Do not connect any other pins except pins 1 & 2.

e. Turn key to “on” and set off/run switch to run, but do not start engine.

f. The check engine light will flash through its initial start sequence, as described above.

g. After the initial sequence of flashes, stored trouble codes will then be sent out as a series of flashes. Trouble codes are stored as two digit

numbers. The first digit of the trouble code is equal to the number of times the light flashes. There is then a 1.2 second pause, then the
second digit of the trouble code is flashed, again equal to the number of times the light flashes. After three seconds, if additional codes are
stored, they will flash in the same manner as the first, until all codes have been displayed, then the sequence will repeat continuously. If only
one code is stored, it will repeat continuously.

Example: After flashing the initial start sequence (as described above) there will be a pause, then flash, flash, flash, flash, (1.2 second pause) flash. (3
second pause) sequence repeats. This indicates code 41, meaning there is a problem with the crank position sensor.

NOTE: See chart for definitions of fault codes supported by the S&S® ignition module.

h. After retrieving codes, turn ignition key and run switch to “off”.

i. Remove jumper wire and replace datalink connector plug.

3. Retrieving codes using the S&S IST Guardian™ Diagnostic System (P/N 55-5075)

The Guardian system offers a more detailed decsription of the trouble codes than the Flash Code method. It also offers a way for trouble

codes to be cleared immediately after a fault has been corrected rather than the 50 on/off cycles of the key that are normally required.

For more details, visit http://www.sscycle.com/software/guardian/

NOTES:
• Before purchasing the S&S IST Guardian™ Diagnostic System (P/N 55-5075) note that the software is only compatible with Windows® 2000/XP/Vista/7 32-

bit systems. It will not work on 64-bit operating systems.

• Also, be aware that the Guardian system is only compatible with the S&S IST ignition module. It will not work with stock Harley-Davidson® or other

aftermarket modules.

CAUTION

Picture 15

Note position of connector lock

Pin 1

Pin 2