S&S Cycle Cycle Guardian Diagnostic System - Manual (Page 11)

11
Timing Adjustments
This display shows the current software adjustments being applied
to the vehicle ignition timing.
Short Term Knock Adjust - Is an adjustment to timing based on
current knock levels.
Long Term Knock Adjust - Is an adjustment to timing based on
engine history at this speed and engine load.
Temperature Compensation - Is an adjustment to timing based
on engine temperature.
Knock Intensity - Is an indication of current knock level.
Data Flags
The Data Flags section displays information about current
engine conditions including active engine fault codes (DTCs).
These indicators turn RED if a condition requires your immediate
attention.
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Timing Angle
This display shows you the current timing setting on both the front
and rear cylinder. This is displayed as degrees before top dead
center (bTDC).
Manifold Absolute Pressure (MAP)
This is the Manifold Absolute Pressure, displayed in Kilo-Pascals
(kPa). Typical wide-open throttle readings are about 100 kPa near
sea-level. Idle is usually 30-40 kPa.
Head Temperature
This is the engine head temperature, measured in degrees
Fahrenheit.
Module Temperature
This is the IST Ignition Module temperature, measured in degrees
Fahrenheit.
Knock Data Invalid - This indicates that the current knock level
readings are not being used for control. This is not a critical error
but should be investigated.*
Timing Limit (Upper) - This indicates that the current ignition
timing is being limited to the upper timing limit safeguard built
into the IST Ignition System. This is not a critical error indicator.
Timing Limit (Lower) - This indicates that the current ignition
timing is being limited to the lower timing limit safeguard built
into the IST Ignition System. This is not a critical error indicator.
Check Engine - This indicates that one or more engine Diagnostic
Trouble Codes are set.
* Note: Knock data is often invalid at engine speeds above 4500
RPM due to excessive engine vibration. Timing adjustments made at
lower engine speeds are used to adjust timing at higher speeds.
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