GDI <4G6> -
Troubleshooting
13A-93
IGNITION COIL AND POWER TRANSISTOR
Power transistor control signal
Measurement Method
1. Disconnect the ignition coil connector, and connect the
special tool (test harness: MB991658) in between. (All
terminals should be connected.)
2. Connect the analyzer special patterns pickup to terminal
3 of each ignition coil connector in turn.
Alternate Method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-ECU terminal 10 (No. 1 ignition coil), terminal 11
(No. 2 ignition coil), terminal 23 (No. 2 ignition coil), terminal
24 (No. 4 ignition coil) respectively.
Standard Wave Pattern
Observation condition
Function
Special patterns
Pattern height
Low
Pattern selector
Display
Engine r/min
Approx. 1,200 r/min
Standard wave pattern
Crank angle
sensor output
wave pattern
Power transistor
control signal
wave pattern
(V)
Compression top dead center
q
: Spark
advance
angle
Ignition period
OFF
ON
Dwell section
Time
q
T
6
4
2
0
4
2
0
T: Revolution time corresponding to a crank angle of 180
_
Special
patterns
pickup
Analyzer
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...
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