Ignition Coil Signal With Engine Idling - Suzuki GRAND VITARA JB416 Service Manual

1A-60 Engine General Information and Diagnosis:
Reference waveform No.12
Ignition coil signal (1) with engine idling
Measurement
CH1: "C37-20" to "C37-58"
terminal
Oscilloscope CH1: 2 V/DIV
setting TIME: 2 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
[A]: For J20 engine
[B]: For M16 engine
1. 4 – 6 V
3. Ignition coil pulse width
Reference waveform No.13
Ignition coil No.4 signal (2) with engine idling (for J20
engine)
Measurement
terminal
Oscilloscope
setting
Measurement
condition
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
Reference waveform No.14
Ignition coil No.3 signal (2) with engine idling (for J20
engine)
Measurement
terminal
Oscilloscope
setting
Measurement
condition
I5JB0A110083-02
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
CH1: "C37-52" to "C37-58"
CH2: "C37-18" 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
CH1: "C37-52" to "C37-58"
CH2: "C37-19" 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
I5JB0A110084-01
I5JB0A110085-01