Suzuki DF 40 - ENGINE CONTROL SYSTEM

ENGINE CONTROL SYSTEM STRUCTURE ____________________ 3-1
SYSTEM STRUCTURE 1 ................................................................................ 3-1
SYSTEM STRUCTURE 2 ................................................................................ 3-2
WIRING DIAGRAM FOR ENGINE CONTROL ............................................... 3-3
COMPONENTS FOR SYSTEM CONTROL ______________________ 3-4
ENGINE CONTROL MODULE (ECM) ............................................................ 3-4
ECM CONNECTORS / TERMINALS LAYOUT ............................................... 3-5
ECM INTERNAL STRUCTURE....................................................................... 3-6
SENSOR AND SWITCH .................................................................................. 3-7
IGNITION SYSTEM ________________________________________ 3-11
IGNITION CONTROL SYSTEM ...................................................................... 3-11
ELECTRONIC FUEL INJECTION SYSTEM _____________________ 3-13
FUEL INJECTION CONTROL SYSTEM......................................................... 3-13
FUEL DELIVERY SYSTEM COMPONENTS .................................................. 3-15
FUEL PUMP CONTROL SYSTEM.................................................................. 3-18
AIR INTAKE COMPONENTS .......................................................................... 3-19
IDLE AIR CONTROL SYSTEM OUTLINE ...................................................... 3-20
CAUTION SYSTEM ________________________________________ 3-22
OVER-REVOLUTION CAUTION SYSTEM ..................................................... 3-22
LOW OIL PRESSURE CAUTION SYSTEM.................................................... 3-23
OVERHEAT CAUTION..................................................................................... 3-24
LOW BATTERY VOLTAGE CAUTION SYSTEM ............................................. 3-25
SELF-DIAGNOSTIC SYSTEM ________________________________ 3-26
PRIORITY / CODE / PATTERN FOR SELF-DIAGNOSTIC
SYSTEM OPERATION .................................................................................... 3-26
CONDITION FOR SELF-DIAGNOSTIC SYSTEM OPERATION.................... 3-28
FAIL-SAFE SYSTEM _______________________________________ 3-29
PRE-PROGRAMMED VALUE FOR FAIL-SAFE SYSTEM ............................ 3-29
OPERATING HOUR INDICATION SYSTEM _____________________ 3-30
START-IN-GEAR PROTECTION SYSTEM ______________________ 3-31
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2
FEEDBACK SYSTEM_____________________________________ 3-32
INSPECTION _____________________________________________ 3-33
PRECAUTION ON SYSTEM INSPECTION .................................................... 3-33
INSPECTION FOR ECM CIRCUIT VOLTAGE ................................................ 3-33
INSPECTION FOR RESISTANCE .................................................................. 3-35
OTHER INSPECTION ...................................................................................... 3-36
TROUBLESHOOTING ______________________________________ 3-41
REMOVAL / INSTALLATION _________________________________ 3-47
FLYWHEEL / CKP SENSOR / CMP SENSOR ............................................... 3-47
OIL PRESSURE SWITCH ............................................................................... 3-50
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ENGINE CONTROL SYSTEM
CONTENTS