Suzuki 2006 SX4, Service Manual

Page: 183 / 1478

Engine General Information and Diagnosis: 1A-139
Reference waveform No.1
Fuel injector signal (1) with engine idling
Reference waveform No.2
No.1 fuel injector signal (2) with engine idling
E01-52 YEL
APP sensor (sub)
signal
0.17 – 0.58 V
IG switch: ON
Engine: After warmed up
Accelerator pedal:
Released
—
1.65 – 2.20 V
IG switch: ON
Engine: After warmed up
Accelerator pedal:
Depressed fully
E01-53 RED
Output for 5 V
power source of
APP sensor (sub)
4.5 – 5.5 V IG switch: ON —
E01-54 BLU
Ground for APP
sensor (main)
Below 0.3 V IG switch: ON —
E01-55 GRN
APP sensor (main)
signal
0.55 – 0.95 V
IG switch: ON
Engine: After warmed up
Accelerator pedal:
Released
—
3.50 – 4.40 V
IG switch: ON
Engine: After warmed up
Accelerator pedal:
Depressed fully
E01-56 BRN
Output for 5 V
power source of
APP sensor (main)
4.5 – 5.5 V IG switch: ON —
E01-57 — — — — —
E01-58 — — — — —
E01-59 — — — — —
E01-60
BRN/
WHT
Main power supply
relay output 10 – 14 V IG switch: OFF
—
0 – 2 V IG switch: ON
Terminal
No.
Wire
color
Circuit Normal voltage Condition Remarks
Measurement
terminal
CH1: “C01-1” (No.1), C01-2 (No.2),
C01-16 (No.3) or C01-17 (No.4) to
“C01-58”
Oscilloscope
setting CH1: 20 V/DIV
TIME: 1 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Fuel injection pulse width: 2-4 msec.
3. 10 – 14 V
I5JB0A110074-01
Measurement
terminal CH1: “C01-52” to “C01-58”
CH2: “C01-1” to “C01-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 20 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
I5JB0A110075-01