Suzuki GRAND VITARA JB416, Service Manual

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Engine General Information and Diagnosis: 1A-61
Reference waveform No.15
• Ignition coil No.2 signal (1) with engine idling (for J20
engine)
• Ignition coil No.2 and No.3 signal (2) with engine idling
(for M16 engine)
Reference waveform No.16
• Ignition coil No.1 signal (1) with engine idling (for J20
engine)
• Ignition coil No.1 and No.4 signal (2) with engine idling
(for M16 engine)
Measurement
terminal CH1: “C37-52” to “C37-58”
CH2: “C37-20” 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
[A]: For J20 engine
[B]: For M16 engine
3. Cylinder reference signal (CMP reference signal)
4. 720
°
crank angle
I5JB0A110086-01
Measurement
terminal CH1: “C37-52” to “C37-58”
CH2: “C37-21” 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
[A]: For J20 engine
[B]: For M16 engine
3. Cylinder reference signal (CMP reference signal)
4. 720
°
crank angle
I5JB0A110087-02