S&S Cycle IST Ignition System for 1984–99 4 1/8 Bore Big Twin Engines - Manual (Page 11)

c. Check that all connections are complete on the 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 connectors are connected correctly.
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 and cannot be cleared immediately after correcting the issue that caused the code.
NOTES:
• If the motorcycle has a check engine light, this can be used to read stored codes. For motorcycles without an OEM check engine light, there is an LED on
the face of the ignition module that functions as a check engine light, and can also be used to read stored codes.
• Trouble codes are stored in memory for as long as the fault exists, and for 50 on/off cycles of the key after a fault is corrected. The S&S IST Guardian™
Diagnostic System (P/N 55-5075) has code clearing capability, and is a way to clear trouble codes immediately after a fault has been corrected. If a fault
still exists, a new trouble code will be generated.
• 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.
1. Overview of check engine light operation.
Initial start sequence.
The check engine light will flash in one of the three ways listed below each time the key is turned “on”, and the off/run switch is set to “run”
• If no faults are detected, the IST ignition will turn the check engine light “on” for 4 seconds, then “off”.
• If a fault is present at that time, the check engine light will turn “on” for four seconds, then turn “off” for four seconds, then turn “on”
continuously.
• If a fault has occurred and been corrected within the past 50 key on/off cycles, the check engine light will turn “on” for four seconds, then
“off” for four seconds, then “on” for eight seconds, then off.
2. Retrieving and displaying codes using the Check Engine light.
a. Turn key and off/run switch to “off”
b. Remove seat or side cover to expose the datalink connector, located near the ignition module.
c. Remove rubber plug from datalink connector.
d. Connect pins “1” and “2” of the datalink connector with a jumper wire. The pins must remain connected during the code retrieval process.
11