Page 223 - 2006 HARLEY FLSTCI SERVICE MANUAL

HEAT MANAGEMENT: FLSTSC

incorrectly assume an idle problem exists. Phase 1 perature drops or the engine reaches 900 RPM. Phase 2 ture drops or the engine reaches 800 RPM. Phase 3 advances the spark timing 10°. Phase 4 TROUBLESHOOTING mation.

NOTE Fuel injected Twin Cam engines use a three phase heat man- agement system to reduce engine temperature under extreme conditions. A rider with a very hot engine may notice the affects of this three phase heat management system and When the engine temperature sensor signals that the cylinder head has reached approximately 266° F (130° C) the ECM will gradually reduce engine idle speed until the engine tem- If engine temperature reaches 293°F (145° C), the ECM will gradually reduce engine idle speed until the engine tempera- If engine temperature reaches 322°F (161° C), the ECM rich- ens the air/fuel r

HEAT MANAGEMENT: ALL BUT

incorrectly assume an idle problem exists. perature drops or the engine reaches 800 rpm. ens the air/fuel ratio to provide additional cooling. pen when the motorcycle is stationary.

NOTE Fuel injected Twin Cam engines use a three phase heat man- agement system to reduce engine temperature under extreme conditions. A rider with a very hot engine may notice the affects of this three phase heat management system and When the engine temperature sensor signals that the cylinder head has reached approximately 320° F (160° C) the ECM will gradually reduce engine idle speed until the engine tem- If engine temperature reaches 338° F (170° C), the ECM rich- If the engine temperature reaches 356° F (180° C), fuel injec- tor pulses are interrupted. The air drawn in and expelled helps cool

HOME FLSTSC Phase 1 Phase 2 Phase 3 5-4