4. Fuel Injection System
4-33
Fault Diagnosis
EFi Circuit Inspection
Main switch on
NG
NG
OK
OK
OK
OK
OK
NG
NG
NG
NG
OK
Check light extinguished after 2 seconds?
Battery voltage above 12.5V?
Battery voltage & ECU voltage of less than 0.2 V?
1.
Main switch OFF
2.
Removed ECU coupler
3.
Main switch ON
4.
Use voltage meter measurement of the power-pin
voltage difference
5.
Confirmed ECU and battery supply voltage
differential pressure within the 0.2 V voltage
Battery voltage – drive parts voltage of less than 0.2
V?
1. Main switch OFF
2.
Removed the injector, fuel pump,
O
2
sensor, roll
over sensor, ignition coil couplers
3.
Measurement of the voltage between the couplers
and ground of the voltage difference
4.
Confirmed voltage difference and battery voltage
of 0.2 V gap within?
ECU 5V voltage - sensor voltage of less than 0.2 V?
1. Main switch OFF
2.
Use probe inserted throttle sensor, engine
temperature sensor, the inlet pressure sensor
power connector
3. Main switch ON
4.
Use voltage meter measurement of the sensor
connector voltage
5.
Voltage standard value
: 5.0
‰
0.1V
Battery voltage - fuel pump voltage of less than 0.2
V?
1. Main switch OFF
2.
Removed fuel pump power coupler
3.
Potential probe then pumped two-pin connector
4. Main switch ON
5.
Pumped in three second record supply voltage
values
6.
Confirmed pump and battery supply voltage
differential pressure within the 0.2 V voltage
1.
Bulbs broken?
2.
Fuse broken?
3.
Battery voltage is too low?
4.
ECU Power line bad contact?
5.
Poor contact the main power
switch?
6.
ECU fault
?
1.
Charging line abnormal?
2.
Unable electrical storage
batteries?
3.
Short-circuit leakage?
1.
Lines abnormal?
1.
Lines abnormal?
1.
Lines abnormal?
2. ECU
abnormal?
1.
Lines abnormal?
2.
Relay fault?
3.
ECU abnormal?
End
To this chapter contents
Содержание Citycom.300i
Страница 1: ...DK Version 1 0 2009 Citycom 300i SERVICE MANUAL FOREWORD HOW TO USE THIS MANUAL CONTENTS SERIAL NUMBER...
Страница 5: ...Serial Number Home page Contents...
Страница 38: ...2 Maintenance Information 2 17 Note To this chapter contents...
Страница 46: ...3 LUBRICATION SYSTEM 3 8 Notes To this chapter contents...
Страница 106: ...4 Fuel Injection System 4 60 Note To this chapter contents...
Страница 173: ...10 AC Generator Starting Clutch 10 10 Notes To this chapter contents...
Страница 195: ...12 Cooling System 12 14 Notes To this chapter contents...
Страница 223: ...14 Brake System 14 12 Note To this chapter contents...
Страница 244: ...17 Electrical System 17 5 FUSE Fuse circuit diagram To this chapter contents...
Страница 262: ...17 Electrical System 17 23 Note To this chapter contents...
Страница 270: ...19 Electrical Diagram 19 1 Home page Contents LH30W EFi Electrical Diagram 19...