Suzuki Grand Vitara JB627. Manual — part 66

1A-213 Engine General Information and Diagnosis:

26

WHT/

BLU

APP sensor signal
(main)

0.70 – 0.80 V

Ignition switch is at ON
position and accelerator
pedal is not depressed
after warmed up engine.

Output signal varies
linearly depending on the
accelerator pedal position.

3.33 – 4.07 V

Ignition switch is at ON
position and accelerator
pedal is at fully depressed
position after warmed up
engine.

27

ORN

Ground for APP
sensor (main)

Below 0.3 V

Ignition switch is at ON
position.

—

28

YEL/

RED

Fuel level sensor
signal

0 – 6 V

Ignition switch is at ON
position. (Voltage varies
depends on fuel level.)

Output signal varies
linearly depending on the
fuel level.

29

PPL/

WHT

Serial
communication line
of DLC

8 – 14 V

Ignition switch is at ON
position.

—

30

GRN/

WHT

Brake light switch
signal

0 – 1 V

Ignition switch is at ON
position and brake pedal is
not depressed.

—

10 – 14 V

Ignition switch is at ON
position and brake pedal is
depressed.

—

31

BLK/

WHT

Cruise control main
switch signal
(if equipped)

0 – 1 V

Ignition switch is at ON
position and cruise control
main switch is not pushed.

For details, refer to
“Inspection of Cruise
Control System Circuit in
Section 10A”.

10 – 14 V

Ignition switch is at ON
position and cruise control
main switch is kept in
push.

32

YEL/
GRN

Brake pedal
position switch
signal for cruise
control system
(if equipped)

0 – 1 V

Ignition switch is at ON
position and brake pedal is
depressed.

—

10 – 14 V

Ignition switch is at ON
position and brake pedal is
not depressed.

—

33

ORN/

BLU

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

4.5 – 5.5 V

Ignition switch is at ON
position.

—

34

BLU/
GRN

APP sensor signal
(sub)

0.37 – 0.38 V

Ignition switch is at ON
position and accelerator
pedal is not depressed
after warmed up engine.

Output signal varies
linearly depending on the
accelerator pedal position.

1.66 – 2.03 V

Ignition switch is at ON
position and accelerator
pedal is at fully depressed
position after warmed up
engine.

35

BLU/

YEL

Ground for APP
sensor (sub)

Below 0.3 V

Ignition switch is at ON
position.

—

36

—

—

—

—

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-214

Reference waveform No.1
Oxygen (1) and heater output (2) signals of heated
oxygen sensor-2 (Bank-1 and Bank-2):

Reference waveform No.2
Oxygen signal (1) and heater output signal (2) of heated
oxygen sensor-2:

37

PNK

A/C compressor
relay output
(if equipped)

0 – 1 V

A/C switch is at OFF
position and blower
selector is at OFF position
while engine is running.

—

10 – 14 V

A/C switch is at ON
position and blower
selector is other than OFF
position while engine is
running.

—

38

BLK/

YEL

Ground for cruise
control command
switch (if equipped)

Below 1.3 V

Ignition switch is at ON
position.

For details, refer to
“Inspection of Cruise
Control System Circuit in
Section 10A”.

39

LT GRN

Cruise control
command switch
signal (if equipped)

4.5 – 5.5 V

Ignition switch is at ON
position and cruise control
command switch are not
pushed.

40

BLU

Clutch pedal
position switch
signal for cruise
control system
(if equipped)

0 – 1 V

Ignition switch is at ON
position and clutch pedal
is depressed.

10 – 14 V

Ignition switch is at ON
position and clutch pedal
is not depressed.

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Measurement
terminal

Bank-1
CH1: C37-1 or C37-2 to C37-81
CH2: C37-3 to C37-81
Bank-2
CH1: C37-20 or C37-21 to C37-81
CH2: C37-22 to C37-81

Oscilloscope
setting

CH1: 10 V/DIV, CH2: 200 mV/DIV
TIME: 200 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warmed up engine.

3. One duty cycle

I6JB01110065-02

Measurement
terminal

Bank-1
CH1: C37-1 or C37-2 to C37-81
CH2: C37-3 to C37-81
CH3: C37-46 to C37-81
Bank-2
CH1: C37-20 or C37-21 to C37-81
CH2: C37-22 to C37-81
CH3: C37-46 to C37-81

Oscilloscope
setting

CH1: 10 V/DIV, CH2: 500 mV/DIV,
CH3: 5 V/DIV
TIME: 400 ms/DIV

Measurement
condition

Engine is racing after warmed up
engine.

3. Throttle position sensor (main) signal

4. Racing

I6JB01110066-03

1A-215 Engine General Information and Diagnosis:

Reference waveform No.3
MAF sensor signal (1):

Reference waveform No.4
EVAP canister purge valve Signal:

Reference waveform No.5
EGR valve Signal:

Reference waveform No.6
Fuel injector signal:

Measurement
terminal

CH1: C37-4 to C37-23
CH2: C37-46 to C37-81

Oscilloscope
setting

CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV

Measurement
condition

Engine is racing after warmed up
engine.

2. Throttle position sensor (main) signal
3. Idle
4. Racing

Measurement
terminal

CH1: C37-10 to C37-81

Oscilloscope
setting

CH1: 10 V/DIV
TIME: 40 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warming up.
Set EVAP canister purge valve at
50% by using “MISC Test” of
SUZUKI scan tool.

1. ON signal
2. OFF signal
3. One duty cycle

I6JB01110067-04

I6JB01110068-02

Measurement
terminal

CH1: C37-12 to C37-81
CH2: C37-31 to C37-81
CH3: C37-11 to C37-81
CH4: C37-30 to C37-81

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 is 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

Measurement
terminal

CH1: C37-15 (No.1), C37-34 (No.2),
C37-14 (No.3), C37-33 (No.4), C37-
13 (No.5) or C37-32 (No.6) to C37-
81

Oscilloscope
setting

CH1: 20 V/DIV
TIME: 1 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warmed up engine.

I6JB01110069-02

I6JB01110070-02

Engine General Information and Diagnosis: 1A-216

Reference waveform No.7
Fuel injector No.5 (1), CKP sensor (2) and CMP sensor
(3) signals:

Reference waveform No.8
Fuel injector No.3 (1), CKP sensor (2) and CMP sensor
(3) signals:

Reference waveform No.9
Fuel injector No.1 (1), CKP sensor (2) and CMP sensor
(3) signals:

Measurement
terminal

CH1: C37-13 to C37-81
CH2: C37-47 to C37-81
CH3: C37-66 to C37-81

Oscilloscope
setting

CH1: 20 V/DIV, CH2: 5 V/DIV, CH3:
5 V/DIV
TIME: 20 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warmed up engine.

4. 720

° crank angle

Measurement
terminal

CH1: C37-14 to C37-81
CH2: C37-47 to C37-81
CH3: C37-66 to C37-81

Oscilloscope
setting

CH1: 20 V/DIV, CH2: 5 V/DIV,
CH3: 5 V/DIV
TIME: 20 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warmed up engine.

4. 720

° crank angle

I6JB01110071-03

I6JB01110072-02

Measurement
terminal

CH1: C37-15 to C37-81
CH2: C37-47 to C37-81
CH3: C37-66 to C37-81

Oscilloscope
setting

CH1: 20 V/DIV, CH2: 5 V/DIV,
CH3: 5 VDIV
TIME: 20 ms/DIV

Measurement
condition

Engine is running at specified idle
speed after warmed up engine.

4. 720

° crank angle

I6JB01110073-02