GDI <4G9> -
Troubleshooting
13B-79
INJECTORS AND INJECTOR OPEN CIRCUIT CHECK
SIGNAL
Measurement Method
1. Connect the analyzer special patterns pickup to terminal
1 (No.1 injector) of the engine-ECU connector.
2. Connect the analyzer special patterns pickup to terminal
51 (injector open circuit check signal) of the engine-ECU
connector.
3. After checking terminal 1, check terminal 14 (No.2
injector), terminal 2 (No.3 injector) and terminal 15 (No.4
injector).
Standard Wave Pattern
Observation conditions
Function
Special pattern
Pattern height
Low
Pattern selector
Display
Engine r/min
Idle speed
Standard wave pattern
4
0
8
4
0
(V)
Injector
open circuit
check signal
Injector
drive signal
(ms)
Wave Pattern Observation Points
D
Check that the injector drive time is identical to the time
displayed on the MUT-
II
.
D
Check that the injector signals become greatly extended
but soon return to their normal wave length when the
engine is suddenly raced.
D
Check that the injector open circuit check signal is
synchronized with each rising portion of the injector drive
signal.
Special patterns
pickup
Analyzer
Normal wave
pattern
Summary of Contents for Space Runner 1998
Page 35: ...ENGINE 4G6 11A ENGINE 4G9 11B 11A 1 ENGINE CONTENTS 11109000276...
Page 74: ...NOTES...
Page 354: ...NOTES...
Page 355: ...13C 1 FUEL SUPPLY CONTENTS 13509000197 GENERAL INFORMATION 2 FUEL TANK 3...
Page 418: ...NOTES...
Page 436: ...NOTES...
Page 460: ...NOTES...
Page 532: ...NOTES...
Page 567: ...REAR AXLE 2WD 27A REAR AXLE 4WD 27B 27A 1 REAR AXLE CONTENTS 27109000246...
Page 660: ...NOTES...
Page 714: ...NOTES...
Page 722: ...NOTES...
Page 732: ...NOTES...
Page 772: ...NOTES...
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