Suzuki Liana RH418, Supplementary Service Manual

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1A-83 Engine General Information and Diagnosis:
21. Reference waveform No.21
Engine coolant temperature signal at engine idling
22. Reference waveform No.22
EVAP canister purge valve signal
23. Reference waveform No.23
Ignition coil signal and fuel injector signal at engine
cranking
24. Reference waveform No.24
Fuel injector signal at engine cranking
Measurement
terminal CH1: C41-14 to C41-10
CH2: G03-9 to C41-1
Oscilloscope setting CH1: 500 mV/DIV, CH2: 5 V/DIV
TIME: 400 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Engine coolant temperature signal for combination meter
2. Engine coolant temperature sensor signal
Measurement
terminal CH1: C41-4 to C41-1
Oscilloscope setting CH1: 5 V/DIV
TIME: 40 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Drive vehicle at 40 km/h (25
mil/h) or more
I3RH0A110047-01
I3RH0A110048-01
Measurement
terminal CH1: C41-20 to C41-1
CH2: C41-9 to C41-1
CH3: C41-11 to C41-1
CH4: C41-30 to C41-1
Oscilloscope setting CH1: 5 V/DIV, CH2: 50 V/DIV
CH3: 5 V/DIV, CH4: 10 V/DIV
TIME: 100 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at cranking
1. Ignition coil No.1 and No.4 signal
2. No.1 fuel injector signal
3. Cylinder reference signal (CMP reference signal)
4. Starting motor signal
Measurement
terminal CH1: C41-11 to C41-1
CH2: C41-21 to C41-1
Oscilloscope setting CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 10 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at cranking
1. Cylinder reference signal (CMP reference signal)
2. Fuel injector signal
3. Injection pulse width: 10 –14 msec.
I3RH0B110020-01
I3RH0B110021-01