Suzuki Grand Vitara JB416 / JB420. Manual — part 67

waveform No.1: ” and
“Reference waveform

No.10: ”)

Engine running at idle
after warmed up engine.

Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.

C37-17

PNK/

BLU

Fuel injector No.4

10 – 14 V

Ignition switch turned ON.

—

*0 – 0.6 V

↑↓

10 – 14 V

waveform No.1: ” and
“Reference waveform

No.11: ”)

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

Ignition coil No.4
(for J20 engine)

0 – 0.6 V

Ignition switch turned ON.

—

*0 – 0.6 V

↑↓

3 – 5 V

waveform No.13: ”)

Engine running at idle
after warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

C37-19

BRN/

WHT

Ignition coil No.3
(for J20 engine)

0 – 0.6 V

Ignition switch turned ON.

—

*0 – 0.6 V

↑↓

3 – 5 V

waveform No.14: ”)

Engine running at idle
after warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

C37-20

BRN/

BLK

Ignition coil No.2
and No.3 (for M16
engine)

0 – 0.6 V

Ignition switch turned ON.

—

Ignition coil No.2
(for J20 engine)

*0 – 0.6 V

↑↓

3 – 5 V

waveform No.15: ”)

Engine running at idle
after warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

C37-21

BRN

Ignition coil No.1
and No.4 (for M16
engine)

0 – 0.6 V

Ignition switch turned ON.

—

Ignition coil No.1
(for J20 engine)

*0 – 0.6 V

↑↓

3 – 5 V

waveform No.16: ”)

Engine running at idle
after warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

C37-22

BLK/

YEL

Starting motor
control relay output

0 – 1 V

Ignition switch turned ON.

—

8 – 14 V

Ignition switch turned to
ST (engine cranking)
position.

C37-23

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-218

C37-24

PPL/

YEL

Engine coolant
temp. (ECT)
sensor signal

3.3 – 3.8 V

Ignition switch turned ON,
ECT at 0

°C, 32 °F.

—

1.38 – 1.72 V

Ignition switch turned ON,
ECT at 50

°C, 122 °F.

0.40 – 0.53 V

Ignition switch turned ON,
ECT at 100

°C, 212 °F.

C37-25 LT GRN

Intake air temp.
(IAT) sensor signal

3.18 – 3.67 V

Ignition switch turned ON,
IAT at 0

°C, 32 °F.

—

1.32 – 1.65 V

Ignition switch turned ON,
IAT at 40

°C, 104 °F.

0.46 – 0.60 V

Ignition switch turned ON,
IAT at 80

°C, 176 °F.

C37-26

RED

Mass air flow
(MAF) sensor
signal

0.5 – 1.0 V

Ignition switch turned ON
with engine at stop.

—

1.3 – 1.8 V

waveform No.17: ”)

When engine running at
specified idle speed after
warmed up.

C37-27

BLU

Ground for MAF
sensor

Below 0.3 V

Ignition switch turned ON.

—

C37-28

BRN/

BLK

Generator control
signal output

*0 – 0.6 V

↑↓

5 – 7 V

waveform No.5: ” and
“Reference waveform

No.6: ”)

Engine running at idle
speed, headlight switch
turned ON.

Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.

C37-29

BLK/

YEL

Ground for ECM

Below 0.3 V

Ignition switch turned ON.

—

C37-30

BLK/
ORN

Ground for ECM

Below 0.3 V

Ignition switch turned ON.

—

C37-31

BLK/

YEL

Ground for A/F
sensor heater

Below 0.3 V

Ignition switch turned ON.

—

C37-32

PNK/

BLU

Heater output of A/
F sensor

10 – 14 V

Ignition switch turned ON.

—

*0 – 1 V

↑↓

10 – 14 V

waveform No.18: ”)

Engine running at idle
after warmed up engine.

Output signal is active low
duty pulse. Duty ratio
varies depending on
engine condition.

C37-33

GRY/

RED

Intake manifold
tuning vacuum
solenoid valve
output (for J20
engine)

10 – 14 V

Ignition switch turned ON.

—

0 – 1 V

waveform No.19: ”)

Engine running at idle
after warmed up engine.

C37-34

RED/

BLU

Ground for A/F
sensor adjusting
resistor

Below 0.3 V

Ignition switch turned ON.

—

C37-35

RED/

YEL

A/F sensor
adjusting resistor
signal

0.15 – 4.82 V

Ignition switch turned ON.

—

C37-36

PNK

Crankshaft position
(CKP) sensor (–)
(for J20 engine)

0 – 1 V

Ignition switch turned ON.

—

*4 – 6 V

↑↓

–4 – –6 V

Engine running at idle
after warmed up engine.

Output signal is sinusoidal
waveform.
Waveform frequency
varies depending on
engine speed. (30 (36 – 6)
pulses are generated par
1 crankshaft revolution.)

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

1A-219 Engine General Information and Diagnosis:

C37-37

BLK

A/F sensor signal
(–)

2.6 – 2.8 V

waveform No.18: ”)

Engine running at idle
after warmed up engine.

—

C37-38

WHT

A/F sensor signal
(+)

3.0 – 3.2 V

waveform No.18: ”)

Engine running at idle
after warmed up engine.

—

C37-39

—

C37-40

RED

Throttle position
sensor (sub) signal

1.60 – 1.91 V

Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.

—

3.88 – 4.45 V

Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.

C37-41

GRN

Ground for throttle
position sensor

Below 0.3 V

Ignition switch turned ON.

—

C37-42

—

C37-43

—

C37-44

BLU/

RED

Output of throttle
actuator

0 – 1 V

Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.

Output signal is duty
pulse. Duty ratio varies
depending on throttle
valve and accelerator
pedal position.

*0 – 1 V

↑↓

10 – 14 V

waveform No.22: ”

waveform No.23: ”)

Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.

C37-45

BLU/

YEL

Output of throttle
actuator

0 – 1 V

Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.

Output signal is duty
pulse. Duty ratio varies
depending on throttle
valve and accelerator
pedal position.

*0 – 1 V

↑↓

10 – 14 V

waveform No.22: ”

waveform No.23: ”)

Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.

C37-46

—

C37-47

BLK/

RED

Heater output of
heated oxygen
sensor-2

10 – 14 V

Ignition switch turned ON.

—

*0 – 1 V

↑↓

10 – 14 V

waveform No.7: ” and
“Reference waveform

No.8: ”)

Engine running at idle
after warmed up engine.

Output signal is active low
duty pulse. Duty ratio
varies depending on
engine condition.

C37-48

BLK/

YEL

Ground for ECM

Below 0.3 V

Ignition switch turned ON.

—

C37-49

—

C37-50

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-220

C37-51

WHT/

BLU

CKP sensor signal
(for M16 engine)

0 – 1 V or 4 – 5 V

Ignition switch turned ON.

—

*4 – 5 V

↑↓

0 – 0.6 V

Engine running at idle
after warmed up engine.

Sensor signal is pulse.
Pulse frequency which
varies depending on
engine speed.
(30 (36 – 6) pulses are
generated per 1
crankshaft revolution.)

GRN

Crankshaft position
(CKP) sensor (+)
(for J20 engine)

0 – 1 V

Ignition switch turned ON.

—

*4 – 6 V

↑↓

–4 – –6 V

Engine running at idle
after warmed up engine.

Output signal is sinusoidal
waveform.
Waveform frequency
varies depending on
engine speed. (30 (36 – 6)
pulses are generated par
1 crankshaft revolution.)

C37-52

WHT/

RED

CMP sensor signal

0 – 1 V or 4 – 5 V

Ignition switch turned ON.

—

*0 – 0.6 V

↑↓

4 – 5 V

Engine running at idle
after warmed up engine.

Sensor signal is pulse.
Pulse frequency varies
depending on engine
speed.
(6 pulses are generated
per 1 camshaft revolution.)

C37-53

WHT

Output for 5 V
power source of
throttle position
sensor

4.5 – 5.5 V

Ignition switch turned ON.

—

C37-54

BLK

Throttle position
sensor (main)
signal

0.72 – 1.04 V

Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.

—

3.67 – 4.25 V

Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.

C37-55

RED/

WHT

Manifold absolute
pressure (MAP)
sensor signal

Approx. 4 V
(“Reference

waveform No.24: ”

Ignition switch turned ON
with barometric pressure
at 100 kPa, 760 mmHg.

—

0.4 – 2.0 V

waveform No.25: ”

While engine running at
specified idle speed after
warmed up with
barometric pressure at
100 kPa, 760 mmHg.

C37-56

WHT

Knock sensor
signal

2 – 3 V

waveform No.26: ”