Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 486

9B-29 Lighting Systems:

Headlight Manual Leveling Switch Inspection (If
Equipped)

S6JB0A9206022

Check for continuity between terminals at each switch
position.
If check result is not as specified, replace switch.

Headlight Leveling Actuator Inspection (If
Equipped)

S6JB0A9206023

Vehicle equipped with headlight auto leveling
system

1) Make sure all couplers of headlight and leveling

actuator are connected securely.

2) Park vehicle in front of blank wall (screen).
3) Turn ignition switch to ON position.
4) Perform “Headlight Leveling Warning Light Check”.
5) Connect service wire (2) to terminals of diagnosis

connector (1).

6) Perform Steps a) through c) described below within

20 seconds after Step 5).
a) Turn lighting switch (3) to “HEAD” position and

then turn lighting switch to OFF position.

b) Repeat Step a) 2 times.
c) Turn lighting switch (3) to “HEAD” position.

7) Check that optical axes of headlights reflected on

blank wall (screen) change. If not, go to “Headlight
Auto Leveling System Symptom Diagnosis (If
Equipped)”.

Vehicle equipped with manual leveling headlight
system

1) Make sure all couplers of headlight and leveling

actuator are connected securely.

2) Park vehicle in front of blank wall (screen).
3) Turn ignition switch to ON position.
4) Turn lighting switch to “HEAD” position.
5) Move headlight leveling switch and check that

optical axes of headlights reflected on blank wall
(screen) change then.Also check that leveling
actuator sounds slightly while moving leveling
switch. If optical axes do not change, go to
“Headlight Manual Leveling System Symptom
Diagnosis (If Equipped)”.

1

2

3

Switch Position

0

Terminal

Resistance ( )

-

1

2

3

4

1 and 2

4370 - 4830

1 and 3

2 and 3

1 and 3

2 and 3

1 and 3

2 and 3

1 and 3

2 and 3

1 and 3

2 and 3

646 - 714

3724 - 4116

3078 - 3402

1292 - 1428

1938 - 2142

2584 - 2856

3230 - 3570

2432 - 2688

1786 - 1974

1140 - 1260

I4RS0B920012-01

1

2

3

I5JB0A920032-01

Lighting Systems: 9B-30

Rear Fog Light Switch Inspection (If Equipped)

S6JB0A9206024

NOTE

• Rear fog light switch can be turned to ON

position only when headlight switch is
turned to HEADLIGHT position (low or high
beams).

• Rear fog light switch turns OFF

automatically when headlight switch is
turned to OFF position.

Check for continuity between terminals at each switch
position.
If check result is not as specified, replace switch.

Height Sensor Removal and Installation (If
Equipped)

S6JB0A9206025

Removal

CAUTION

!

• Do not remove bracket (4) and link (3) from

height sensor (2). Removal will spoil its
original function. If faulty condition is
found, replace it with new one in a set.

• If height sensor was dropped from a height

of 30 cm (0.9 ft) or more, replace it with
new one.

1) Disconnect negative (–) cable at battery.
2) Disconnect height sensor connector (1) from height

sensor (2).

3) Remove front height sensor with its bracket (4) from

suspension frame (6) and lower arm (5).

Terminal

Shaft condition

1

2

OFF

ON

ON

OFF

2

1

I4RS0B920013-01

[A]: Front

[B]: Rear

6

1

3

2

4

[B]

1

3

4

6

2

5

[A]

5

4

4

I5JB0A920033-02

9B-31 Lighting Systems:

Installation
For installation, reverse removal procedure noting the
following.
• Check that bracket and link of height sensor are not

deformed.

• Tighten height sensor bolts and nuts to specified

torque.

Tightening torque
Height sensor bolt (a): 10 N·m (1.0 kgf-m, 7.5 lb-
ft)
Height sensor nut (b): 10 N·m (1.0 kgf-m, 7.5 lb-ft)

• Connect connector securely.
• After installation, initialize auto leveling headlight

system referring to “Initialization of Auto Leveling
Headlight System”.

Height Sensor and Its Circuit Inspection (If
Equipped)

S6JB0A9206026

1) Remove front or rear height sensor from vehicle

referring to “Height Sensor Removal and Installation
(If Equipped)”.

2) Connect connector to height sensor.
3) Vary position of height sensor link (1) and measure

voltage between terminals of headlight auto leveling
control module (4) as described below.
• For front height sensor

Between “G51-20” and “G51-22” terminals of
headlight leveling control module.

• For rear height sensor

Between “G51-19” and “G51-21” terminals of
headlight leveling control module.
If check result is not as specified, perform
inspections of power supply, ground and signal
circuits of front or rear height sensor which is
described under “Inspection of Headlight Leveling
Control Module and Its Circuit (Vehicle Equipped
With Auto Leveling Headlight System)”. If circuits
are OK, replace height sensor.

Height sensor output voltage
Full bound position (2): about 0.5 V
Full rebound position (3): about 4.5 V

[A]: Front

[B]: Rear

[B]

[A]

(a)

(b)

(a)

(b)

I5JB0A920040-01

[A]: Front

[B]: Rear

G51

10

11

12

13

16

17

18

19

20

3

1

5

6

9

21

22

23

24

V

[A]

[B]

1

3

2

3

2

1

4

I5JB0A920034-02

Lighting Systems: 9B-32

Headlight Leveling Control Module Removal
and Installation (If Equipped)

S6JB0A9206027

Removal

1) Disconnect negative (–) cable at battery.
2) Disconnect connector (1) from headlight leveling

control module (2).

3) Remove headlight leveling control module with its

bracket from heater unit (3).

Installation
For installation, reverse removal procedure noting the
following.
• Connect connector securely.
• After replacing headlight leveling control module with

new one, initialize auto leveling headlight system
referring to “Initialization of Auto Leveling Headlight
System”.

Initialization of Auto Leveling Headlight System

S6JB0A9206028

Initialization of the auto leveling headlight system is to
make the headlight leveling control module learn signals
which are fed from the height sensors when the vehicle
is at the standard height. Standard height means the
height of the vehicle with a driver but without load in it.
Initialization of the auto leveling headlight system is
required when any of the following works has been
performed.
• Replacement of headlight leveling control module
• Removal of front and/or rear height sensor link from

lower arm

• Removal of front and/or rear height sensor from

suspension frame

• Replacement of front and/or rear height sensor

Without initialization of the auto leveling headlight
system, it is not possible to obtain its proper function.
Also, if the auto leveling headlight system is not
initialized after replacing the headlight leveling control
module, the headlight leveling warning light in the
combination meter flashes.

1) Observe the following instructions.

• Park vehicle on level ground.
• Adjust air pressure of all tires to the specified

value respectively.

• Bounce vehicle body up and down by hand to

stabilize suspension.

2) Turn ignition switch to ON position.
3) Perform “Headlight Leveling Warning Light Check”.
4) Connect service wire (2) to terminals of diagnosis

connector (1).

5) Perform Steps a) through b) described blow within

20 seconds after Step 4).
a) Turn lighting switch (3) to “HEAD” position and

then turn lighting switch to OFF position.

b) Repeat Step a) 2 times.

6) Confirm that headlight leveling warning light flashes

3 times and turns off, which indicates that system
initialization was completed properly. If it does not
turn off after flashing 3 times, it means initialization
was not successful. In such case, turn off ignition
switch and perform Steps 1) to 6) again.

1

3

2

I5JB0A920035-01

1

2

3

I5JB0A920032-01

1

I5JB0A920012-02