Suzuki GRAND VITARA JB416 Service Manual page 79

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)
Measurement CH1: "C37-52" to "C37-58"
terminal CH2: "C37-20" to "C37-58"
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 J20 engine
[B]: For M16 engine
3. Cylinder reference signal (CMP reference signal)
4. 720° crank angle
Engine General Information and Diagnosis:
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
Oscilloscope
setting
Measurement
condition
I5JB0A110086-01
[A]: For J20 engine
[B]: For M16 engine
3. Cylinder reference signal (CMP reference signal)
4. 720° crank angle
CH1: "C37-52" to "C37-58"
CH2: "C37-21" to "C37-58"
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1A-61
I5JB0A110087-02