Suzuki Grand Vitara JB419. Service manual — part 36

Engine Electrical Devices: 1C-5

6) Proceed after-sales regeneration automatically as

follows.

NOTE
Ensure to perform each step of regeneration
by observing carefully the engine speed and
the engine sound at each step. Because this
procedure does not finish automatically and
SUZUKI scan tool does not indicate any
status of this procedure and the result of
regeneration.

a) Phase 1: Warming up

The engine speed is raised to 1500 rpm for at
least 3 minutes or until engine coolant
temperature reaches 80

°C (176 °F)

b) Phase 2: Regenerating

Injection timing is shifted to post injection (a
change in the engine operation sound can be
heard) and start regeneration.

NOTE
Phase 2 lasts approximately 20 minutes.

c) Phase 3: Cooling down

The injection is shifted to normal timing again.

CAUTION

!

To avoid thermal shock in the diesel
particulate filter, do not stop engine at phase
3.

7) Confirm “Diesel PF inlet Temp” under “Data list” of

SUZUKI scan tool, and wait until it decreases to 200

°C (392 °F) or less.

8) Stop engine.
9) Turn ignition switch to OFF position, and wait for 15

minutes or more.

10) Clear DTC referring to “DTC Clearance in Section

1A”.

11) After engine is cooled, replace engine oil and oil filter

referring to “Engine Oil and Filter Change in Section
0B”.

12) Check as follows that aftersales-regeneration is

correctly performed.

CAUTION

!

When driving, be sure to select in safe place
where there is neither any traffic nor any
traffic accident possibility and be very
careful during driving to avoid occurrence of
an accident.

a) Drive vehicle in the following each condition in

order to make ECU recognize actually soot mass
after after-sales regeneration.
i)

At 80 km/h for 10 minutes

ii) At 40 km/h for 5 minutes

b) Using SUZUKI scan tool, check that “Diesel PF

soot mass” parameter is 8 g (0.28 oz) or less.
If it is over 8g (0.28 oz), aftersales regeneration
is not correctly performed.Proceed to next step.

13) If aftersales regeneration is not correctly performed,

check as follows.

CAUTION

!

Be sure to change engine oil after each after-
sales regeneration.
Otherwise, engine will be damaged due to
degraded engine oil.

a) Check that connection and/or hose of differential

pressure sensor.
If faulty condition is found, repair or replace it.

b) Restart aftersales-regeneration referring to

“Diesel Particulate Filter After-sales
Regeneration Procedure” and check the
following condition during this after-sales
regeneration.
• Check exhaust system for leakage.

If leakage is found, repair or replace faulty
condition.

• Using SUZUKI scan tool, check that the

following parameters are over 550

°C (1022

°F).
If not, replace catalytic converter referring to
“Exhaust System Components in Section 1K”.
– Diesel PF in Temp
– Diesel PF out Temp

c) After after-sales regeneration, check “Diesel PF

soot mass” in the same manner as step 12).
If “Diesel PF soot mass” is over 8 g (0.28 oz)
again, replace diesel particulate filter referring to
“Diesel Particulate Filter Removal and
Installation in Section 1K”.

1C-6 Engine Electrical Devices:

Glow Plug Removal and Installation

S5JB0B1306007

Removal

CAUTION

!

• Do not damage heating section of the glow

plug.

• Do not use glow plug that has been

dropped.

• When removing glow plug, first loosen it

with a tool so that one or more screw
threads remain engaged, then loosen and
remove by hand.

1) Disconnect negative (–) cable at battery.
2) Remove injector cover referring to “Cylinder Head

Cover Removal and Installation in Section 1D”.

3) Pull off glow plug wires (1).
4) Clean outside of glow plug to avoid any dirt entering

cylinder head.

5) Remove glow plugs (2) from cylinder head.

Installation
For installation, reverse removal procedure noting the
following.
• Tightening glow plug (1) to specified torque.

Tightening torque
Glow plug (a): 15 N·m (1.5 kgf-m, 11.0 lb-ft)

• Connect glow plug wires (2) securely.

Glow Plug Inspection

S5JB0B1306008

1) Disconnect negative (–) cable at battery.
2) Remove injector cover referring to “Cylinder Head

Cover Removal and Installation in Section 1D”.

3) Disconnect glow plug wires.
4) Check resistance between glow plug and engine

ground.
If resistance is out of specification, replace glow
plug.

Glow plug resistance
Approx. 0.6

Ω

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

S5JB0B1306037

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”.

2) Connect SUZUKI scan tool to DLC with ignition

switch turned OFF.

Special tool
: SUZUKI scan tool

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

on scan tool.

1

1

2

I5JB0B130021-01

2

2

1, (a)

I5JB0B130022-01

I4SN0A132006-01

Engine Electrical Devices: 1C-7

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 to “Accelerator Pedal Position (APP)
Sensor Assembly Inspection”.

Accelerator Pedal Position (APP) Sensor
Assembly Removal and Installation

S5JB0B1306038

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.

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.

Accelerator Pedal Position (APP) Sensor
Assembly Inspection

S5JB0B1306039

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 “Volt 1”
terminal (4) of sensor and negative terminal to
battery.

[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

1

2

3

4

I5JB0A130019-02

1C-8 Engine Electrical Devices:

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 “Volt 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 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

Engine Coolant Temperature (ECT) Sensor
Removal and Installation

S5JB0B1306011

Removal

1) Disconnect negative cable at battery.
2) Drain cooling system referring to “Cooling System

Description in Section 1F”.

3) Disconnect ECT sensor connector (1).

4) Remove ECT sensor (1) from thermostat assembly

by removing clip (2).

Installation
Reverse removal procedure for installation noting the
following.
• Check ECT sensor O-ring for damage.

If malfunction is found, replace ECT sensor.

• Refill cooling system referring to “Cooling System

Refilling in Section 1F”.

• Check cooling system leakage referring to “Engine

Cooling System Inspection and Cleaning in Section
1F”.

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

[E]: Fully depressed position of accelerator pedal

[F]: Pedal stroke

1

2

3

4

I5JB0A130020-02

[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

1

I5JB0B130003-01

1

2

I5JB0B130004-01