Suzuki SX4 Service Manual page 235

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Reference waveform No.8
Heated oxygen sensor-1 signal (1) with engine idling
Measurement
CH1: "C01-10" to "C01-57"
terminal
CH2: "C01-46" to "C01-58"
Oscilloscope
CH1: 500 mV/DIV, CH2: 20 V/DIV
setting
TIME: 1 s/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
2. Heated oxygen sensor-1 heater signal
Reference waveform No.9
Heated oxygen sensor-1 heater signal (2) with engine
idling
Measurement
CH1: "C01-10" to "C01-57"
terminal
CH2: "C01-46" to "C01-58"
Oscilloscope
CH1: 500 mV/DIV, CH2: 10 V/DIV
setting
TIME: 200 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
1. Heated oxygen sensor-1 signal
3. OFF signal
I4RS0B110058-01
I4RS0B110059-01
4. ON signal
5. One duty cycle
Engine General Information and Diagnosis:
Reference waveform No.10
Heated oxygen sensor-2 heater signal (4) with engine
idling
Measurement
CH1: "C01-11" to "C01-57"
terminal
CH2: "C01-47" to "C01-58"
Oscilloscope
CH1: 500 mV/DIV, CH2: 10 V/DIV
setting
TIME: 2 s/DIV
• After warmed up to normal
operating temperature
Measurement
• Vehicle driving at 60 km/h (37
condition
mph) for 10 min.
• Engine at specified idle speed
1. Heated oxygen sensor-2 signal upper limit
2. Heated oxygen sensor-2 signal lower limit
3. Normal waveform range
1A-185
I4RS0B110060-01

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