Suzuki SX4 Service Manual page 234

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1A-184 Engine General Information and Diagnosis:
Reference waveform No.5
Ignition coil No.2 and No.3 signal (2) with engine idling
Measurement
CH1: "C01-20" to "C01-58"
terminal
CH2: "C01-5" to "C01-58"
Oscilloscope
CH1: 2 V/DIV, CH2: 2 V/DIV
setting
TIME: 40 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
[A]: For VVT model
[B]: For non-VVT model
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
Reference waveform No.6
Ignition coil signal (1) with engine idling
Measurement
CH1: "C01-6" to "C01-58"
terminal
Oscilloscope
CH1: 2 V/DIV
setting
TIME: 4 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
2. 4 – 6 V
Reference waveform No.7
Ignition coil No.1 and No.4 signal (2) with engine idling
Measurement
terminal
Oscilloscope
setting
Measurement
condition
I4RS0B110054-01
[A]: For VVT model
[B]: For non-VVT model
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
3. Ignition coil pulse width: 4 – 5 msec.
CH1: "C01-20" to "C01-58"
CH2: "C01-6" to "C01-58"
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
• After warmed up to normal
operating temperature
• Engine at specified idle speed
I4RS0B110055-02
I4RS0B110056-01

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