Suzuki GRAND VITARA Owner's Manual page 287

Reference waveform No.29
Oil control valve signal with engine racing (for M16
engine)
Measurement
CH1: "C37-60" to "C37-59"
terminal
Oscilloscope CH1: 5 V/DIV
TIME: 400 µs/DIV
setting
• After warmed up to normal
operating temperature
Measurement
• Drive vehicle at 20 km/h (12 mph)
condition
and depress accelerator pedal
fully
1. Accelerator pedal depressed fully
2. Accelerator pedal depressed partially
3. Oil control valve signal
4. ON signal
5. OFF signal
Reference waveform No.30
CAN communication line signal with ignition switch
turned ON
Measurement CH1: "E23-4" to "C37-58"
terminal CH2: "E23-19" to "C37-58"
Oscilloscope CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 40 µs/DIV
setting
Ignition switch turned ON
Measurement
(Signal pattern is depending on
condition
communication data)
1. CAN communication line signal (High)
2. CAN communication line signal (Low)
Engine General Information and Diagnosis:
Reference waveform No.31
Ignition coil signal and fuel injector signal with engine
cranking
Measurement
terminal
Oscilloscope
setting
Measurement
condition
I4RS0B110075-01
[A]: For J20 engine
[B]: For M16 engine
1. Cylinder reference signal (CMP reference signal)
2. Ignition coil signal
3. No.1 fuel injector signal
4. Engine start signal
I5JB0A110094-01
CH1: "C37-52" to "C37-58"
CH2: "C37-21" to "C37-58"
CH3: "C37-1" to "C37-58"
CH4: "C37-22" to "C37-58"
CH1: 5 V/DIV, CH2: 5 V/DIV
CH3: 50 V/DIV, CH4: 10 V/DIV
TIME: 200 ms/DIV
• After warmed up to normal
operating temperature
• Engine at cranking
1A-232
I5JB0A110095-01