Suzuki 2006 SX4, Service Manual

Page: 187 / 1478

Engine General Information and Diagnosis: 1A-143
Reference waveform No.15
A/F sensor signal with engine idling
Reference waveform No.16
IMT valve actuator signal with engine racing
Reference waveform No.17
CMP sensor signal with engine idling
Reference waveform No.18
CMP sensor signal with engine idling
Measurement
terminal
CH1: “C01-38” to “C01-58”
CH2: “C01-37” to “C01-58”
CH3: “C01-32” to “C01-31”
Oscilloscope
setting
CH1: 500 mV/DIV, CH2: 500 mV/
DIV, CH3: 10 V/DIV
TIME: 100 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. A/F sensor signal (+) 3. A/F sensor heater signal
2. A/F sensor signal (–) 4. One duty cycle
Measurement
terminal CH1: “C01-42” to “C01-58”
CH2: “C01-43” to “C01-58”
Oscilloscope
setting CH1: 10 V/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine racing
1. IMT valve actuator signal (+) 3. IMT valve open
2. IMT valve actuator signal (–)
I7RW01110020-01
I7RW01110021-01
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-51” to “C01-36”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 5 V/DIV
TIME: 20 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. CKP signal
3. 360
°
crank angle
4. 4 – 5 V
5. 36 – 6 = 30 CKP pulse
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-51” to “C01-36”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 5 V/DIV
TIME: 10 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. CKP signal
3. 30
°
crank angle
4. 10
°
crank angle
5. 360
°
crank angle
6. 36 – 6 = 30 CKP pulse
I7RW01110023-01
I7RW01110024-01