Suzuki Liana RH413 Service Manual page 166

1A-115 Engine General Information and Diagnosis:
7. Reference waveform No.7
Ignition coil No.1 and No.4 signal at engine idling
Measurement CH1: C41-11 to C41-1
terminal CH2: C41-20 to C41-1
Oscilloscope setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
Measurement • After warmed up to normal
condition operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. No.1 and No.4 ignition signal
8. Reference waveform No.8
Fuel injector signal at engine idling
Measurement CH1: C41-11 to C41-1
terminal CH2: C41-21 to C41-1
Oscilloscope CH1: 5 V/DIV, CH2: 20 V/DIV
setting TIME: 4 ms/DIV
Measurement • After warmed up to normal
condition operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. Fuel injector signal
a. Fuel injection pulse width: 2 - 4 msec.
9. Reference waveform No.9
No.4 fuel injector signal at engine idling
Measurement
terminal
Oscilloscope setting CH1: 5 V/DIV, CH2: 20 V/DIV
Measurement
condition
I3RH0A110033-01
10. Reference waveform No.10
No.3 fuel injector signal at engine idling
Measurement
terminal
Oscilloscope setting CH1: 5 V/DIV, CH2: 20 V/DIV
Measurement
condition
I3RH0A110034-01
CH1: C41-11 to C41-1
CH2: C41-8 to C41-1
TIME: 40 ms/DIV
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. No.4 fuel injector signal
CH1: C41-11 to C41-1
CH2: C41-31 to C41-1
TIME: 40 ms/DIV
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. No.3 fuel injector signal
I3RH0A110035-01
I3RH0A110036-01