Page 222 - 2006 HARLEY FLSTCI SERVICE MANUAL

extra terminal to monitor current on the coil secondary circuit.
cylinder at a time - no wasted spark). The coil also has an
The ignition system gives a spark near top dead center for
The IAT, ET and TP sensors are used to provide information
starting. At RPM and loads above this, the system gives a
Front and rear coils fire each spark plug independently (one
5.2 5-3
This is used for knock detection and combustion diagnostics.
spark advance that varies between 0° and 50°.

used as an input for idle speed control. to the ECM to fine tune spark and fuel delivery. The VSS is 2006 Softail: Engine Management (EFI)

EFI SYSTEM GENERAL The engine management system consists of the following Electronic control module (ECM). Crank position sensor (CKP). Manifold absolute pressure sensor (MAP). Intake air temperature sensor (IAT). Engine temperature sensor (ET). Idle air control (IAC). Throttle position sensor (TP). Vehicle speed sensor (VSS). Turn signal module (TSM) or optional, factory-installed turn signal security module (TSSM). This includes an integrated bank angle sensor (BAS). Ignition coil. The ECM is mounted below the seat. It computes the spark advance for proper ignition timing based on sensor inputs (from

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