Suzuki 2006 SX4 Service Manual page 184

1A-140 Engine General Information and Diagnosis:
Reference waveform No.3
No.2 fuel injector signal (2) with engine idling
Measurement CH1: "C01-52" to "C01-58"
terminal CH2: "C01-2" to "C01-58"
Oscilloscope CH1: 5 V/DIV, CH2: 20 V/DIV
setting TIME: 40 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
Reference waveform No.4
HO2S signal (1) with engine idling
Measurement CH1: "C01-11" to "C01-39"
terminal CH2: "C01-47" 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
2. HO2S heater signal
I5JB0A110076-01
I7RW01110093-01
3. One duty cycle
Reference waveform No.5
HO2S signal (1) with engine racing
Measurement CH1: "C01-11" to "C01-39"
terminal CH2: "C01-47" 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 racing
2. HO2S heater signal
Reference waveform No.6
EVAP canister purge valve signal
Measurement
CH1: "C01-13" to "C01-58"
terminal
Oscilloscope CH1: 10 V/DIV
setting TIME: 40 ms/DIV
• After warmed up to normal
operating temperature
Measurement
• Set EVAP canister purge valve at
condition
52% by using "Active Test" of
scan tool
1. ON signal
2. OFF signal
I7RW01110094-01
3. Engine racing
I4RS0B110067-01
3. One duty cycle
4. 10 – 14 V