Suzuki SWIFT RS415 2017, Service Manual

Page: 210 / 1257

1A-162 Engine General Information and Diagnosis:
C37-10 WHT
Oxygen signal of
heated oxygen
sensor-1
0 – 1 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under
0.45 V
(“Reference
waveform No.9: ” and
“Reference waveform
No.10: ”)
While engine running at
2,000 r/min. for 1 min. or
longer after warmed up.
C37-11 BRN
Oxygen signal of
heated oxygen
sensor-2
4 – 5 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under
0.45 V
(“Reference
waveform No.11: ”)
While engine running at
2,000 r/min. or more after
vehicle running over 30
km/h, 19 mph for 5 min.
C37-12 WHT
CAN (low)
(communication
line (active low
signal) to TCM (for
A/T)
*0.5 – 2.5 V
(“Reference
waveform No.12: ”)
Ignition switch turned ON
with engine stop.
CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency which
varies depending on
engine condition.
C37-13 RED
CAN (high)
communication line
(active high signal)
to TCM (for A/T)
*2.5 – 4.5 V
(“Reference
waveform No.12: ”)
C37-14
GRY/
RED
Output of 5 V
power source for
TP sensor, MAP
sensor, A/C
refrigerant
pressure sensor
4.5 – 5.5 V Ignition switch turned ON. —
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
C37-16
BLU/
RED
Fuel injector No.3
output
10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V
np
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform
No.13: ”)
Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-17
BLU/
ORN Fuel injector No.4
output
10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V
np
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform
No.14: ”)
Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-18
BRN/
YEL
EGR valve
(stepper motor coil
4) output
10 – 14 V Ignition switch turned ON. —
*0 – 1 V
np
10 – 14 V
(“Reference
waveform No.4: ”)
Ignition switch is turned to
ST (cranking) position.
Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
C37-19
WHT/
RED
EGR valve
(stepper motor coil
3) output
10 – 14 V Ignition switch turned ON. —
*0 – 1 V
np
10 – 14 V
(“Reference
waveform No.4: ”)
Ignition switch is turned to
ST (cranking) position.
Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
Terminal
No.
Wire
color
Circuit Normal voltage Condition Remarks