Suzuki 2006 SX4, Service Manual

Page: 185 / 1478

Engine General Information and Diagnosis: 1A-141
Reference waveform No.7
No.3 fuel injector signal (2) with engine idling
Reference waveform No.8
No.4 fuel injector signal (2) with engine idling
Reference waveform No.9
Ignition coil signal (1) with engine idling
Reference waveform No.10
Ignition coil No.4 signal (2) with engine idling
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-16” to “C01-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-17” to “C01-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
I5JB0A110081-01
I5JB0A110082-01
Measurement
terminal CH1: “C01-18”, “C01-19”, “C01-20”
or “C01-21” to “C01-58”
Oscilloscope
setting CH1: 2 V/DIV
TIME: 2 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. 4 – 6 V 3. Ignition coil pulse width
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-18” to “C01-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
I7RW01110017-01
I5JB0A110084-01