Suzuki 2006 SX4, Service Manual

Page: 189 / 1478

Engine General Information and Diagnosis: 1A-145
Reference waveform No.22
Knock sensor signal at engine speed 4000 r/min.
Reference waveform No.23
CAN communication line signal from ABS / ESP
®
control module with ignition switch turned ON
Reference waveform No.24
Ignition coil signal and fuel injector signal with engine
cranking
Reference waveform No.25
CAN communication line signal from TCM with ignition
switch turned ON
Measurement
terminal
CH1: “C01-56” to “C01-58”
Oscilloscope
setting CH1: 1 V/DIV
TIME: 200
µ
s/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Run engine at 4000 r/min.
Measurement
terminal CH1: “E01-4” to “C01-58”
CH2: “E01-19” to “C01-58”
Oscilloscope
setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 40
µ
s/DIV
Measurement
condition
Ignition switch turned ON
(Signal pattern is depending on
communication data)
1. CAN communication line signal (High)
2. CAN communication line signal (Low)
I4RS0B110073-01
I7RW01110028-01
Measurement
terminal
CH1: “C01-52” to “C01-58”
CH2: “C01-21” to “C01-58”
CH3: “C01-1” to “C01-58”
CH4: “C01-22” to “C01-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 5 V/DIV
CH3: 50 V/DIV, CH4: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at cranking
1. Cylinder reference signal (CMP reference signal)
2. Ignition coil signal
3. No.1 fuel injector signal
4. Engine start signal
Measurement
terminal CH1: “C01-50” to “C01-58”
CH2: “C01-49” to “C01-58”
Oscilloscope
setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 40
µ
s/DIV
Measurement
condition
Ignition switch turned ON
(Signal pattern is depending on
communication data)
1. CAN communication line signal (High)
2. CAN communication line signal (Low)
I7RW01110029-01
I7RW01110030-01