Suzuki Ignis Service Manual page 1308

ENGINE GENERAL INFORMATION AND DIAGNOSIS (M15 ENGINE) 6-23
4. Reference waveform No.4
IAC valve signal
Measurement CH1: C64-10 to C64-1
terminal CH2: C64-9 to C64-1
CH3: C64-8 to C64-1
CH4: C64-28 to C64-1
Oscilloscope CH1: 20 V/DIV, CH2: 20 V/DIV
setting CH3: 20 V/DIV, CH4: 20 V/DIV
TIME: 20 ms/DIV
Measurement Ignition switch turned ON from ST (crank-
condition ing) position
1. IAC valve stepper motor coil 1 signal
2. IAC valve stepper motor coil 2 signal
3. IAC valve stepper motor coil 3 signal
4. IAC valve stepper motor coil 4 signal
5. Reference waveform No.5
EGR valve signal
Measurement CH1: C64-17 to C64-1
terminal CH2: C64-34 to C64-1
CH3: C64-16 to C64-1
CH4: C64-33 to C64-1
Oscilloscope CH1: 20 V/DIV, CH2: 20 V/DIV
setting CH3: 20 V/DIV, CH4: 20 V/DIV
TIME: 40 ms/DIV
Measurement At the moment of the ignition switch in
condition turned on
1. EGR valve stepper motor coil 1 signal
2. EGR valve stepper motor coil 2 signal
3. EGR valve stepper motor coil 3 signal
4. EGR valve stepper motor coil 4 signal
6. Reference waveform No.6
Ignition coil No.2 and No.3 signal at engine idling
Measurement CH1: C63-10 to C64-1
terminal CH2: C64-31 to C64-1
Oscilloscope CH1: 2 V/DIV, CH2: 2 V/DIV
setting TIME: 40 ms/DIV
Measurement • After warmed up to normal operating
condition
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. No.2 and No.3 ignition signal
temperature