Suzuki Grand Vitara JB627. Manual - part 370

9B-5 Lighting Systems: 

Headlight Leveling Actuator
Headlight leveling actuator is (1) located in the headlight housing (2). It moves the reflector (3) in the headlight housing 
according to the drive signal from the headlight leveling control module so as to adjust the optical axis of the headlight 
to the angle calculated by the headlight leveling control module.

Auto-On Headlight System Description (If Equipped)

S6JB0B9201003

The auto-on headlight is controlled by BCM (1) and works as follows. Under such conditions as the ignition switch 
turned ON, the lighting switch (2) turned to the “AUTO” position and the parking brake released, when illuminance to 
the auto-on headlight sensor (3) becomes lower than the specified value, the headlights and clearance lights are 
turned ON by BCM. On the other hand, when illuminance to the auto-on headlight sensor becomes higher than the 
specified value under the same conditions, the headlights and clearance lights are turned OFF by BCM.

I5JB0A920006-06

1

1

2

3

I5JB0A920007-01

Lighting Systems:  9B-6

D.R.L. System Description (If Equipped)

S6JB0B9201004

The D.R.L. system is controlled by BCM (1). It lights headlights when following two conditions are met. Conditions for 
D.R.L. operation:
• The engine is running
• The lighting switch is at “OFF” position

Schematic and Routing Diagram

Headlight Auto Leveling System Wiring Circuit Diagram

S6JB0B9202001

1

1

I5JB0A920008-01

G51-12
G51-19
G51-21

G51-10

G51-23

+B

5V

5V

YEL/RED

GRN/RED

BLK

G51-1

12V

GRN

GRN/YEL

GRN/WHT

YEL

3

G51-13
G51-20
G51-22

5V

BLU/RED
BLU/YEL
BLU/BLK

2

4

5

9

10

11

1

5V

5V

12V

G51-16

G51-3

BLU/BLK

RED/BLU

5V

G51-5 PNK

G51-17

RED

G51-11

G51-24

YEL/GRN

GRN/BLK

6

12V

G51-18

GRN

7

8

G51-6

G51-9

BLU/WHT

G51

10

11

12

13

16

17

18

19

20

3

1

5

6

9

21

22

23

24

[A]

I5JB0D920001-01

[A]: Headlight leveling control module connector (viewed from 

harness side)

4. BCM

8. Headlight leveling warning light

1. Headlight leveling control module

5. Right headlight leveling actuator

9. Ignition switch

2. Front height sensor

6. Left headlight leveling actuator

10. Lighting switch

3. Rear height sensor

7. Combination meter

11. Diagnosis connector

9B-7 Lighting Systems: 

Component Location

Lighting System Components Location

S6JB0B9203001

NOTE
The following figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are 
installed at the opposite side.

 

26*

15*

8*

15*

19*

1

2

1

2

3

3

3

4

4

4

5

5

5

6

6

6

7

7

7

10*

9

12

13*

14

16*

17*

18

20*

22

21

23

24

25

[A]

[B]

[C]

1

1

29

11*

27*

28*

I6JB0B920001-02

[A]: Discharge headlight

9. Front fog light (if equipped)

20. Rear fog light switch (if equipped)

[B]: Halogen headlight of 5 door model

10. Front fog light switch (if equipped)

21. Front height sensor

[C]: Halogen headlight of 3 door model

11. Front fog light relay (if equipped)

22. Rear height sensor

1. Headlight bulb

12. Hazard warning switch

23. Discharge head light bulb

2. Socket cover

13. Turn signal / hazard warning relay

24. Igniter

3. Clearance light bulb

14. Rear combination light

25. Ballast

4. Clearance light bulb socket

15. BCM 

26. Auto-on headlight sensor

5. Turn signal light bulb

16. Tail light relay

27. Headlight high beam relay

Lighting Systems:  9B-8

Interior Light System Location

S6JB0B9203002

Diagnostic Information and Procedures

Self-Diagnosis Function for Auto Leveling Headlight System

S6JB0B9204001

The headlight leveling control module has self-diagnosis function to monitor the system components and circuits while 
the headlight auto leveling system is at work. When the headlight leveling control module detects an abnormality in the 
system, the headlight leveling warning light in the combination meter turns ON. However, the headlight leveling control 
module does not have a function to indicate location of such abnormality.

Headlight Leveling Warning Light Check

S6JB0B9204002

1) Turn ignition switch to ON position.
2) Check that headlight leveling warning light (1) lights for about 2 seconds and then goes OFF. If the headlight 

leveling warning light lights up again 10 seconds after it turned off, go to “Headlight Auto Leveling System 
Symptom Diagnosis (If Equipped)”. If headlight leveling warning light flashes, go to “Initialization of Auto Leveling 
Headlight System”.

6. Turn signal light bulb socket

17. Headlight leveling switch (if equipped)

28. Headlight low beam relay

7. Headlight unit

18. Rear fog light (if equipped)

29. Headlight bulb socket

8. Lighting switch

19. Headlight auto leveling control module (if equipped)

2

1

4

3

I5JB0A920010-01

1. Dome light

3. Door switches (both sides)

2. Luggage compartment light (if equipped)

4. Rear end door switch (included in lock assembly)

1

I5JB0A920012-02