Suzuki Swift Sport 2004 Service & Repair Manual page 240

1A-190 Engine General Information and Diagnosis:
Reference waveform No.21
Throttle actuator output signal with ignition switch turned
ON
Measurement CH1: "C37-45" to "C37-58"
terminal CH2: "C37-44" to "C37-58"
Oscilloscope CH1: 5 V/DIV, CH2: 5 V/DIV
setting TIME: 2 ms/DIV
• After warmed up to normal
operating temperature
Measurement
• Ignition switch turned ON and
condition
accelerator pedal at full
depressed position
1. Throttle actuator drive signal ("C37-45" terminal)
2. Throttle actuator drive signal ("C37-44" terminal)
3. ON signal
4. OFF signal
5. One duty cycle
Reference waveform No.22
Ignition coil signal and fuel injector signal with engine
cranking
Measurement
terminal
Oscilloscope
setting
Measurement
condition
I4RS0B110082-02
1. Cylinder reference signal (CMP reference signal)
2. Ignition coil No.1 and No.4 signal
3. No.1 fuel injector signal
4. Engine start signal
Reference waveform No.23
MAP sensor signal (1) with ignition switch turned ON
Measurement
terminal
Oscilloscope
setting
Measurement
condition
2. TP sensor signal
CH1: "C37-20" to "C37-58"
CH2: "C37-6" to "C37-58"
CH3: "C37-1" to "C37-58"
CH4: "C37-48" 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
CH1: "C37-53" to "C37-55"
CH2: "C37-54" to "C37-55"
CH1: 2 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV
• After warmed up to normal
operating temperature
• Ignition switch turned ON
I6RS0C110038-01
I4RS0B110070-01