S&S Cycle Ignition System For All 1999–03 Carbureted Harley-Davidson Twin Cam 88 Engines - Manual (Page 8)

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E. Initial Starting and Operation Procedure:
Because the S&S® Intelligent Spark Technology Ignition System is designed to learn the specific engine/motorcycle configuration it is being
used for, the following initial starting and operating procedures must be followed after installing the system for the first time. These procedures
need to be followed only once. After that, the motorcycle can be started and ridden as usual.
1. Initial Starting Procedure
NOTE: ImpOrTaNT! On some 2001 and up models, the Vehicle Speed Signal (VSS) is sent to the ignition module in lieu of a cam position signal.
The module must “learn” which signal is connected. It is important that the rear wheel remain motionless if the key is on the first time the module is
installed.
Until the ignition has learned what type of signal is present, it could fire the plugs based on wheel movement if installed on a motorcycle with the VSS routed
to the ignition module.
To insure proper learning of the type of signal used in your application:
a. Be sure to start the motorcycle in neutral and on a flat/level surface.
b. Allow the engine to run for a minimum of 10 seconds before turning the key off.
This procedure only needs to be performed once, but it should be repeated if the IST module is installed in another motorcycle.
2. Initial Operating Procedure
Initially, the S&S Intelligent Spark Technology Ignition System operates using a standard ignition-timing map that may not be optimum but is
considered “safe” for most engine configurations. After 3 to 5 hours of operation, with the engine warmed up, the IST Ignition System will have
adjusted the map to create one that is optimized for the particular engine configuration. See Step 2-a. The IST system will continually adapt
to subsequent changes in riding style, fuel quality, weather conditions and elevation to further optimize the ignition map. For this reason, data
recorded using a chassis dynomometer should be measured after the system has had sufficient time to learn the specific engine parameters.
a. Ride your motorcycle as you normally would during this initial learning period. The IST system will learn and adapt the ignition map to
various conditions as they are encountered – so the more riding you do, the more the system will fine tune itself. Below are some suggested
practices to help the system quickly create the initial optimized timing map:
1. Allow engine to remain at normal operating temperature for at least an hour.
2. Ride up hills and/or inclines.
3. Ride at highway speeds for at least 20 minutes. When road conditions are safe, briefly (1-2 seconds at a time) open the throttle all the
way.
4. Ride through intersections/stretches of road where second and third gear roll-ons are required.
F. Basic Troubleshooting:
Below are some suggestions if any problems are encountered with the IST Ignition Module.
1. Problem: Engine cranks but will not start.
Possible solutions:
a. Check that the gas tank is full and that the fuel petcock is turned on.
b. Check that coil wires (plug and harness) have been reinstalled properly.
c. Check that all connections are complete on the Harley-Davidson® Twin Cam 88® Wiring Harness Adapter.
2. Problem: Key power-on switch does not seem to work.
Possible solutions:
a. Check for blown fuses and/or tripped circuit breakers.
b. Check that the battery has been properly reconnected.
c. Check that the 12-pin Black and Grey connectors are connected correctly. For example, check that the wire colors match from one side to
the other. If they do not match, disconnect the connector, rotate it to the correct orientation, and reconnect.
G. Advanced Troubleshooting
The S&S® ignition system features advanced self-diagnostic capabilities. The unit detects operational faults, and stores them as codes in
memory. There are two methods of retrieving trouble codes stored in memory. First, by counting Flash Codes, generated by the Check Engine
light, (see note) and second, by using the S&S IST Guardian™ Diagnostic System (P/N 55-5075) connected to the data link connector of the S&S
Ignition Wiring Harness. Flash codes allow the mechanic to access the trouble code information without the use of the Guardian system, but
are less detailed. Steps for using both methods are outlined below.