Suzuki SWIFT RS415 2017, Service Manual

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1A-170 Engine General Information and Diagnosis:
Reference waveform No.6
Ignition coil signal (1) with engine idling
Reference waveform No.7
Ignition coil No.1 and No.4 signal (2) with engine idling
Reference waveform No.8
VSS signal at 30 km/h (19 mph) (for M/T model)
Reference waveform No.9
Heated oxygen sensor-1 signal (1) with engine idling
Measurement
terminal
CH1: “C37-6” to “C37-58”
Oscilloscope
setting CH1: 2 V/DIV
TIME: 4 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: 4 – 5 msec.
Measurement
terminal CH1: “C37-20” to “C37-58”
CH2: “C37-6” to “C37-58”
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
q
crank angle
I4RS0B110055-
I4RS0A110091-
Measurement
terminal CH1: “C37-9” to “C37-58”
CH2: “E23-25” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Drive vehicle at 30 km/h (19 mph)
1. VSS signal (M/T)
2. VSS signal for EPS control module
3. ON
4. OFF
5. 4 – 5 V
Measurement
terminal CH1: “C37-10” to “C37-57”
CH2: “C37-46” to “C37-58”
Oscilloscope
setting CH1: 500 mV/DIV, CH2: 20 V/DIV
TIME: 1 s/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Heated oxygen sensor-1 heater signal
I4RS0B110057-
I4RS0B110058-