Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 111

1C-4 Engine Electrical Devices: For Petrol Engine Model

Throttle Position Sensor Performance Check

1) Remove air cleaner outlet hose (for J20 engine) or

air intake pipe (for M16 engine).

2) Turn OFF ignition switch.
3) Disconnect connector from electric throttle body

assembly.

4) Check throttle position sensor (main and sub) output

voltage as following steps.
a) For throttle position sensor (main), arrange 3

new 1.5 V batteries (1) in series (check that total
voltage is 4.5 – 5.0 V) and connect its positive
terminal to “Vin” terminal (2) and negative
terminal to “Ground” terminal (3) of sensor. Then
using voltmeter, connect positive terminal to
“Vout 1” terminal (4) of sensor and negative
terminal to battery.

b) For throttle position sensor (sub), arrange 3 new

1.5 V batteries (1) in series (check that total
voltage is 4.5 – 5.0 V) and connect its positive
terminal to “Vin” terminal (2) and negative
terminal to “Ground” terminal (3) of sensor. Then
using voltmeter, connect positive terminal to
“Vout 2” terminal (4) of sensor and negative
terminal to battery.

c) Measure output voltage variation while throttle

valve is opened and closed as following
specification.

[A]: For J20 engine
[B]: For M16 engine

1

4

2

3

1

4

2

3

[A]

[B]

I5JB0A130015-02

[A]: For J20 engine
[B]: For M16 engine

1

3

2

4

1

3

2

4

[A]

[B]

I5JB0A130016-02

Engine Electrical Devices: For Petrol Engine Model 1C-5

If sensor voltage is out of specified value and linear
variation as the following graph, replace electric throttle
body assembly.

Throttle position sensor output voltage
Throttle position sensor (main) [A]: 0.45 – 4.88 V,
varying according to throttle valve opening by finger
(Voltage should vary by 0.04 V for each 1

° valve

opening)
Throttle position sensor (sub) [B]: 1.33 – 5.007 V,
varying according to throttle valve opening by finger
(Voltage should vary by about 0.032 V for each 1

°

valve opening)

Electric Throttle Body System Calibration

S6JB0A1316004

NOTE
If the service described under the
“Precautions of Electric Throttle Body
System Calibration: For Petrol Engine Model
in Section 1A” is performed, calibrate electric
throttle body system as follows.

1) If electric throttle body assembly and/or accelerator

pedal position (APP) sensor assembly are replaced,
perform following steps.
a) Disconnect negative cable at battery for 20

seconds or more for the purpose of clearing
calibration data of closed throttle position from
memory in ECM.

b) Connect negative cable to battery.

2) Keep ignition switch at ON position for 5 seconds or

more without running engine.

[C]: Throttle position sensor (main) output voltage
[D]: Throttle position sensor (sub) output voltage

[E]: Throttle valve opening

[F]: Position where throttle valve is open by 7

° from completely closed

position (default position)

[G]: Angle obtained when accelerator pedal is depressed fully (84

°)

[H]: Angle obtained when throttle valve is fully opened with finger (96

°)

[B]

[A]

[D]
(V)

[C]
(V)

[F]

[G]

[E]

0.45 - 0.75

0.724 - 1.036

3.675 - 4.245

4.000 - 4.880

1.33 - 1.63

1.604 - 1.916

3.883 - 4.453

4.097 - 5.007

[H]

[F]

[G]

[H]

I5JB0A130017-02

1C-6 Engine Electrical Devices: For Petrol Engine Model

Accelerator Pedal Position (APP) Sensor
Assembly On-Vehicle Inspection

S6JB0A1316005

1) Check that accelerator pedal position (APP) sensor

assembly has been mounted to vehicle body
properly (no pinched floor carpet, etc).
If mounting is not properly, reinstall accelerator pedal
position (APP) sensor assembly properly referring to
“Accelerator Pedal Position (APP) Sensor Assembly
Removal and Installation: For Petrol Engine Model”.

2) Connect scan tool to DLC with ignition switch turned

OFF.

3) Turn ON ignition switch and select “Data List” mode

on scan tool.

4) Check that accelerator pedal position sensor voltage

varies as the following graph.
If sensor voltage is out of specified value or does not
vary linearly as the following graph, check
accelerator pedal position (APP) sensor assembly
referring to “Accelerator Pedal Position (APP)
Sensor Assembly Inspection: For Petrol Engine
Model”.

Accelerator Pedal Position (APP) Sensor
Assembly Removal and Installation

S6JB0A1316006

CAUTION

!

• Do not expose accelerator pedal position

(APP) sensor assembly to excessive shock
like a dropping it. If accelerator pedal
position (APP) sensor assembly has been
exposed to excessive shock, it should be
replaced.

• Be careful not to expose sensor section of

accelerator pedal position (APP) sensor
assembly to water.

NOTE
After replacing accelerator pedal position
(APP) sensor assembly, perform calibration
of throttle valve referring to “Electric Throttle
Body System Calibration: For Petrol Engine
Model”.

Removal

1) Disconnect negative cable at battery.
2) Disconnect connector from accelerator pedal

position (APP) sensor assembly.

3) Remove accelerator pedal position (APP) sensor

assembly from its bracket.

Installation
Reverse removal procedure for installation noting the
following.
• Tighten accelerator pedal position (APP) sensor

assembly upper nut (1) first and then lower nuts (2) to
specified torque.

Tightening torque
Accelerator pedal position (APP) sensor assembly
nut (a): 6.0 N·m (0.6 kgf-m, 4.5 lb-ft)

• If APP sensor assembly bracket is removed, tighten

its mounting nuts to specified torque

Tightening torque
APP sensor assembly bracket nut: 6.0 N·m (0.6
kgf-m, 4.3 lb-ft)

• Connect connector to accelerator pedal position

(APP) sensor assembly securely.

[A]: Accelerator pedal position (APP) sensor (main) voltage
[B]: Accelerator pedal position (APP) sensor (sub) voltage

[C]: Sensor output voltage
[D]: Idle position of accelerator pedal

[E]: Full depressed position of accelerator pedal

[F]: Pedal stroke

[C]

[B]

[D]

[F]

[E]

[A]

1.74 - 2.17 V

0.65 - 0.82 V

3.50 - 4.27 V

0.30 - 0.44 V

I5JB0A130018-05

1, (a)

2, (a)

I5JB0A130036-01

Engine Electrical Devices: For Petrol Engine Model 1C-7

Accelerator Pedal Position (APP) Sensor
Assembly Inspection

S6JB0A1316007

Check accelerator pedal position (APP) sensor (main
and sub) output voltage as following steps.

1) For accelerator pedal position (APP) sensor (main),

arrange 3 new 1.5 V batteries (1) in series (check
that total voltage is 4.7 – 5.0 V) and connect its
positive terminal to “Vin 1” terminal (2) and negative
terminal to “Ground 1” terminal (3) of sensor. Then
using voltmeter, connect positive terminal to “Vout 1”
terminal (4) of sensor and negative terminal to
battery.

2) For accelerator pedal position (APP) sensor (sub),

arrange 3 new 1.5 V batteries (1) in series (check
that total voltage is 4.7 – 5.0 V) and connect its
positive terminal to “Vin 2” terminal (2) and negative
terminal to “Ground 2” terminal (3) of sensor. Then
using voltmeter, connect positive terminal to “Vout 2”
terminal (4) of sensor and negative terminal to
battery.

3) Measure output voltage variation while accelerator

pedal is no depressed and fully depressed as
following specification.

If sensor voltage is out of specified value or does not
vary linearly as the following graph, replace accelerator
pedal position (APP) sensor assembly.

Accelerator pedal position (APP) sensor output
voltage
Accelerator pedal position (APP) sensor (main)
output voltage [A]: 0.82 – 3.50 V, varying according
to depressed extent of accelerator pedal
Accelerator pedal position (APP) sensor (sub)
output voltage [B]: 0.44 – 1.74 V, varying according
to depressed extent of accelerator pedal

1

2

3

4

I5JB0A130019-02

1

2

3

4

I5JB0A130020-02

[C]: Sensor output voltage
[D]: Idle position of accelerator pedal

[E]: Fully depressed position of accelerator pedal

[F]: Pedal stroke

[C]

[B]

[D]

[F]

[E]

[A]

1.74 - 2.17 V

0.65 - 0.82 V

3.50 - 4.27 V

0.30 - 0.44 V

I5JB0A130021-05