SeaDoo GTI - Page 8

TABLE OF CONTENTS
REGULATOR........................................................................................................ 309
FUEL INJECTOR ................................................................................................... 310
LEAK TEST(SUPPLY AND VENTILATION CIRCUITS)........................................................... 311
HIGH PRESSURE TEST (FUEL PUMP CIRCUIT)................................................................. 311
ELECTRONIC MANAGEMENT ............................................................................ 312
THROTTLE POSITION SENSOR (TPS)............................................................................ 312
CRANKSHAFT POSITION SENSOR (CPS)........................................................................ 313
AIR TEMPERATURE SENSOR (ATS).............................................................................. 314
WATER TEMPERATURE SENSOR (WTS) ........................................................................ 314
AIR PRESSURE SENSOR (APS)................................................................................... 315
RAVE SOLENOID................................................................................................... 316
RFI SENSORS RESISTANCE VALUES............................................................................ 317
04 – TROUBLESHOOTING SUMMARY........................................................................ 319
ENGINE DOES NOT START ............................................................................... 319
FLOODED ENGINE FEATURE ............................................................................. 319
SPARK PLUG INSPECTION................................................................................ 319
ECU FAULT CODES......................................................................................... 319
ENGINE STARTS BUT RUNS POORLY .................................................................. 319
ENGINE RUNS ONLY ON ONE CYLINDER.............................................................. 319
ENGINE CANNOT REACH MAXIMUM REVOLUTIONS............................................... 320
05 – ADJUSTMENT............................................................................................... 321
THROTTLE CABLE ADJUSTMENT....................................................................... 321
THROTTLE POSITION SENSOR (TPS)................................................................... 321
CLOSED TPS ....................................................................................................... 321
IDLE SPEED ........................................................................................................ 321
06 – REMOVAL AND INSTALLATION ......................................................................... 323
MPEM/ECU................................................................................................... 323
THROTTLE POSITION SENSOR (TPS)................................................................... 323
AIR TEMPERATURE SENSOR (ATS) ..................................................................... 323
AIR PRESSURE SENSOR (APS)........................................................................... 323
WATER TEMPERATURE SENSOR (WTS) ............................................................... 323
CRANKSHAFT POSITION SENSOR (CPS) .............................................................. 323
FUEL PUMP ASSEMBLY................................................................................... 323
REGULATOR........................................................................................................ 324
FUEL FILTER........................................................................................................ 324
FUEL INJECTORS........................................................................................... 324
07 ENGINE MANAGEMENT (DI)
01 – OVERVIEW ................................................................................................... 327
OPERATING PRINCIPLE.................................................................................... 327
AIR INDUCTION............................................................................................. 327
AIR COMPRESSOR SYSTEM.............................................................................. 327
FUEL DELIVERY SYSTEM.................................................................................. 327
BASIC OPERATION ................................................................................................ 327
AIR/FUEL RAIL ASSEMBLY ....................................................................................... 328
FUEL PUMP MODULE ............................................................................................ 328
ELECTRONIC MANAGEMENT ............................................................................ 329
MPEM (MULTI-PURPOSEELECTRONICMODULE)............................................................ 329
MPEM — ENGINE MANAGEMENT FUNCTIONS............................................................... 332
IGNITION SYSTEM................................................................................................. 334
02 – COMPONENT INSPECTION AND ADJUSTMENT ..................................................... 335
GENERAL..................................................................................................... 335
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