Suzuki 2006 SX4, Service Manual

Page: 186 / 1478

1A-142 Engine General Information and Diagnosis:
Reference waveform No.11
Ignition coil No.3 signal (2) with engine idling
Reference waveform No.12
Ignition coil No.2 signal (1) with engine idling
Reference waveform No.13
Ignition coil No.1 signal (1) with engine idling
Reference waveform No.14
MAF sensor signal (1) with engine racing
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-19” to “C01-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-20” to “C01-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
I5JB0A110085-01
I7RW01110018-01
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-21” to “C01-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Cylinder reference signal (CMP reference signal)
3. 720
°
crank angle
Measurement
terminal CH1: “C01-26” to “C01-27”
CH2: “C01-54” to “C01-41”
Oscilloscope
setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine racing
2. TP sensor (main) signal
3. Racing
4. Idle
I7RW01110019-01
I5JB0A110088-02