S&S Cycle IST Ignition System for 1984-1999 Big Twin and Custom Applications User Manual

Page 14

process. See Picture 19, below.

Do not cross any pins other than pins 1 & 2.

e. Turn key to “on” 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, the second digit being 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 cam 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 a separate Code Reader (Scantool, Scanalyzer)
The S&S ignition uses OBDII (On Board Diagnostics II) code. This is the same platform used universally by the automotive industry as the

standard for diagnosing engine problems. The code reader needs to be configured with a generic OBDII PROM (a programmable read only
memory cartridge that plugs into the code reader). For example, if using an OTC or Kent-Moore brand Scanalyzer use the Pathfinder 99 (or
newer) PROM. Hardware or software designed for use with Harley-Davidson motorcycles is not compatible with the S&S ignition system.

In addition to the automotive style code reader and OBDII cartridge, an adapter cable is required to connect the SAE J1962 (two rows of eight

contacts) connection found on automotive code readers to the motorcycle’s data link connector. This cable is not included with the ignition.
It is a service item, and can be purchased separately, S&S # 55-1550.

Code readers are produced by various aftermarket companies, refer to the manufacturer’s instructions for operation.

Picture 19

Note position of connector lock

Pin #1

Pin #2

CAUTION