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4-8
6999-0003 7/15/99
ENGINE CONTROL SYSTEM
CONTROLLING INJECTION TIMING AND
IGNITION TIMING
The ECM controls fuel injection and ignition timing
based on information it receives from the
crankshaft
position sensor
and the
road speed sensor
. The crank-
shaft position sensor is a magnetic pickup located on
the lower front end of the crankcase. This generates
voltage pulses that the ECM uses to calculate engine
speed. To determine piston position in the 4-cycle com-
bustion process, the ECM matches injection timing and
the rapid decrease in engine speed that accompanies
the number 1 cylinder compression stroke. The road
speed sensor, located on top of the transmission case,
generates voltage pulses as the teeth of the fifth gear
wheel pass by. The ECM uses road speed and engine
speed to optimize performance. The road speed sensor
also drives the speedometer.
Содержание HCX 1999
Страница 1: ......
Страница 5: ...FOREWORD 6999 0003 7 15 99 iii...
Страница 7: ...6999 0003 7 15 99 v...
Страница 8: ...1 0 6999 0003 7 15 99 ROUTINE MAINTENANCE 1...
Страница 10: ...1 2 6999 0003 7 15 99 ROUTINE MAINTENANCE TROUBLESHOOTING MAINTENANCE INTERVALS...
Страница 18: ...1 10 6999 0003 7 15 99 ROUTINE MAINTENANCE...
Страница 19: ...ROUTINE MAINTENANCE 6999 0003 7 15 99 1 11...
Страница 20: ...ROUTINE MAINTENANCE NOTES 6999 0003 7 15 99 1 12...
Страница 21: ...ROUTINE MAINTENANCE 6999 0003 7 15 99 1 13...
Страница 22: ...2 0 6999 0003 7 15 99 BODY EXHAUST 2...
Страница 37: ...BODY EXHAUST 6999 0003 7 15 99 2 15...
Страница 38: ...3 0 6999 0003 7 15 99 LUBRICATION SYSTEM 3 10732...
Страница 49: ...LUBRICATION SYSTEM NOTES 6999 0003 7 15 99 3 11...
Страница 50: ...4 0 6999 0003 7 15 99 ENGINE CONTROL SYSTEM 4...
Страница 206: ...5 0 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION 5...
Страница 208: ...5 2 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION TROUBLESHOOTING...
Страница 235: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 29...
Страница 236: ...5 30 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 237: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 31...
Страница 238: ...5 32 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 239: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 33...
Страница 240: ...5 34 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 241: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 35...
Страница 242: ...5 36 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 243: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 37...
Страница 244: ...5 38 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 245: ...ENGINE REMOVAL INSTALLATION NOTES 6999 0003 7 15 99 5 39...
Страница 246: ...6 0 6999 0003 7 15 99 CYLINDER HEAD CAM DRIVE 6...
Страница 274: ...7 0 6999 0003 7 15 99 CYLINDER PISTON 7...
Страница 292: ...8 0 6999 0003 7 15 99 CRANKCASE CRANKSHAFT 8...
Страница 308: ...9 0 6999 0003 7 15 99 PRIMARY DRIVE 9 10794...
Страница 316: ...10 0 6999 0003 7 15 99 CLUTCH 10 10758...
Страница 333: ...CLUTCH NOTES 6999 0003 7 15 99 10 17...
Страница 334: ...11 0 6999 0003 7 15 99 TRANSMISSION 11 10822...
Страница 352: ...12 0 6999 0003 7 15 99 WHEELS 12 10736...
Страница 373: ...WHEELS NOTES 6999 0003 7 15 99 12 21...
Страница 374: ...13 0 6999 0003 7 15 99 FRONT SUSPENSION STEERING 13...
Страница 392: ...14 0 6999 0003 7 15 99 REAR SUSPENSION 14...
Страница 398: ...14 6 6999 0003 7 15 99 REAR SUSPENSION StepNumber 1 2...
Страница 399: ...REAR SUSPENSION 6999 0003 7 15 99 14 7...
Страница 400: ...15 0 6999 0003 7 15 99 BRAKES 15...
Страница 420: ...16 0 6999 0003 7 15 99 BATTERY CHARGING SYSTEM 16...
Страница 431: ...BATTERY CHARGING SYSTEM NOTES 6999 0003 7 15 99 16 11...
Страница 432: ...17 0 6999 0003 7 15 99 STARTER 17 10722...
Страница 443: ...STARTER NOTES 6999 0003 7 15 99 17 11...
Страница 444: ...18 0 6999 0003 7 15 99 LIGHTS GAUGES SWITCHES 18...
Страница 472: ...18 28 6999 0003 7 15 99 LIGHTS GAUGES SWITCHES...
Страница 474: ...WIRING SCHEMATIC NOTES 19 2 6999 0003 7 15 99...