Suzuki Grand Vitara JB416 / JB420 (ESP model). Manual — part 15

1A-56 Engine General Information and Diagnosis:

E23-16

BLU/

BLK

Main power supply

10 – 14 V

Ignition switch turned ON.

—

E23-17

GRN

Power supply of
throttle actuator
drive circuit

10 – 14 V

Ignition switch turned ON.

—

E23-18

—

—

—

—

—

E23-19

WHT/

BLU

CAN (low)
communication line
(active low signal)

*0.5 – 2.5 V
(“Reference

waveform No.30: ”)

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.

E23-20

GRN/

WHT

Stop lamp switch
signal

0 – 1 V

Ignition switch turned ON,
stop lamp not lit up.

—

10 – 14 V

Ignition switch turned ON,
stop lamp lit up.

E23-21

BLK/

YEL

Cruise control
command switch
ground (if equipped
with cruise control
system)

Below 1.3 V

Ignition switch turned ON.

—

E23-22 LT GRN

Cruise control
command switch
signal (if equipped
with cruise control
system)

4 – 6 V

Ignition switch turned ON.

—

E23-23

—

—

—

—

—

E23-24

YEL/

RED

Fuel level sensor
signal

0 – 6 V

Ignition switch turned ON.
Voltage varies depends on
fuel level.

—

E23-25

—

—

—

—

—

E23-26

—

—

—

—

—

E23-27

—

—

—

—

—

E23-28

GRY/

BLU

Serial
communication line
for immobilizer coil
antenna (if
equipped)

10 – 14 V

Ignition switch turned ON.

—

E23-29

BLK/

WHT

Ignition switch
signal

0 – 1 V

Ignition switch turned OFF.

—

10 – 14 V

Ignition switch turned ON.

E23-30

—

—

—

—

—

E23-31

—

—

—

—

—

E23-32

—

—

—

—

—

E23-33

—

—

—

—

—

E23-34

—

—

—

—

—

E23-35

—

—

—

—

—

E23-36

—

—

—

—

—

E23-37

—

—

—

—

—

E23-38

—

—

—

—

—

E23-39

—

—

—

—

—

E23-40

—

—

—

—

—

E23-41

—

—

—

—

—

E23-42

—

—

—

—

—

E23-43

—

—

—

—

—

E23-44

—

—

—

—

—

E23-45

—

—

—

—

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-57

E23-46

RED/

BLK

Radiator cooling
fan relay No.1
output

10 – 14 V

Ignition switch turned ON,
engine coolant temp.:
below 95

°C (203 °F), or

A/C refrigerant pressure:
below 300 kPa (43.5 psi)
with A/C switch turned on
while engine is running.

—

0 – 2 V

Ignition switch turned ON,
engine coolant temp.: 97.5

°C (207.5 °F) or higher, or
A/C refrigerant pressure:
340 kPa (49.3 psi) or
higher with A/C switch
turned on while engine is
running.

E23-47

RED

Radiator cooling
fan relay No.2
output

10 – 14 V

Ignition switch turned ON,
engine coolant temp.:
below 100

°C (212 °F), or

A/C refrigerant pressure:
below 1300 kPa (188.5
psi) with A/C switch turned
on while engine is running.

—

0 – 2 V

Ignition switch turned ON,
engine coolant temp.:
102.5

°C (216.5 °F) or

higher, or A/C refrigerant
pressure: 1600 kPa (232
psi) or higher with A/C
switch turned on while
engine is running.

E23-48

RED/

YEL

Radiator cooling
fan relay No.3
output

10 – 14 V

Ignition switch turned ON,
engine coolant temp.:
below 100

°C (212 °F), or

A/C refrigerant pressure:
below 1300 kPa (188.5
psi) with A/C switch turned
on while engine is running.

—

0 – 2 V

Ignition switch turned ON,
engine coolant temp.:
102.5

°C (216.5 °F) or

higher, or A/C refrigerant
pressure: 1600 kPa (232
psi) or higher with A/C
switch turned on while
engine is running.

E23-49

PNK

A/C compressor
relay output (if
equipped with A/C)

10 – 14 V

Engine running, A/C
switch OFF and blower
selector at OFF position.

—

0 – 1 V

Engine running, A/C
switch ON and blower
selector at 1st position or
more.

E23-50

BLU/
ORN

Throttle actuator
control relay output

0 – 1 V

Ignition switch turned ON.

—

E23-51

BLU/

YEL

Ground for
accelerator pedal
position (APP)
sensor (sub)

Below 0.3 V

Ignition switch turned ON.

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

1A-58 Engine General Information and Diagnosis:

E23-52

BLU/
GRN

Accelerator pedal
position (APP)
sensor (sub) signal

0.30 – 0.44 V

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

—

1.74 – 2.17 V

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

E23-53

ORN/

BLU

Output for 5 V
power source of
accelerator pedal
position (APP)
sensor (sub)

4.5 – 5.5 V

Ignition switch turned ON.

—

E23-54

ORN

Ground for
accelerator pedal
position (APP)
sensor (main)

Below 0.3 V

Ignition switch turned ON.

—

E23-55

WHT/

BLU

Accelerator pedal
position (APP)
sensor (main)
signal

0.65 – 0.82 V

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

—

3.50 – 4.27 V

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

E23-56

WHT

Output for 5 V
power source of
accelerator pedal
position (APP)
sensor (main)

4.5 – 5.5 V

Ignition switch turned ON.

—

E23-57

—

—

—

—

—

E23-58

—

—

—

—

—

E23-59

—

—

—

—

—

E23-60

BLU

Main power supply
relay output

10 – 14 V

Ignition switch turned OFF.

—

0 – 2 V

Ignition switch turned ON.

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-59

Reference waveform No.1
Fuel injector signal (1) with engine idling

Reference waveform No.2
No.1 fuel injector signal (2) with engine idling

Reference waveform No.3
No.2 fuel injector signal (2) with engine idling

Reference waveform No.4
EGR valve signal

Measurement
terminal

CH1: “C37-2” to “C37-58”

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

Measurement
terminal

CH1: “C37-52” to “C37-58”
CH2: “C37-1” to “C37-58”

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

I5JB0A110074-01

I5JB0A110075-01

Measurement
terminal

CH1: “C37-52” to “C37-58”
CH2: “C37-2” to “C37-58”

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

Measurement
terminal

CH1: “C37-5” to “C37-58”
CH2: “C37-6” to “C37-58”
CH3: “C37-3” to “C37-58”
CH4: “C37-4” to “C37-58”

Oscilloscope
setting

CH1: 20 V/DIV, CH2: 20 V/DIV
CH3: 20 V/DIV, CH4: 20 V/DIV
TIME: 40 ms/DIV

Measurement
condition

Engine at cranking

1. EGR valve stepper motor coil 1 signal
2. EGR valve stepper motor coil 2 signal
3. EGR valve stepper motor coil 3 signal
4. EGR valve stepper motor coil 4 signal
5. ON signal
6. OFF signal

I5JB0A110076-01

I4RS0B110053-01