Suzuki Grand Vitara JB416 / JB420. Manual - part 367

9B-7 Lighting Systems: 

Component Location

Lighting System Components Location

S5JB0A9203001

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*

11*

9

12

13*

14

16*

17*

18

20*

22

21

23

24

25

[A]

[B]

[C]

27*

28*

1

1

29

I5JB0D920002-01

[A]: Discharge headlight

9. Front fog light (if equipped)

20. Rear fog light switch (if equipped)

[B]: Halogen headlight of 5door model

10. Front fog light switch (if equipped)

21. Front height sensor

[C]: Halogen headlight of 3door 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. Illumination cancel switch (if equipped)

27. Headlight high beam relay

Lighting Systems:  9B-8

Interior Light System Location

S5JB0A9203002

Diagnostic Information and Procedures

Self-Diagnosis Function for Auto Leveling Headlight System

S5JB0A9204015

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

S5JB0A9204016

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)

[A]: Junction block assembly viewed from relay side

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

9B-9 Lighting Systems: 

Headlight Symptom Diagnosis (Vehicle Equipped With Discharge Headlight)

S5JB0A9204001

Headlight Symptom diagnosis (Vehicle Not Equipped With Discharge Headlight)

S5JB0A9204017

Condition

Possible cause

Correction / Reference Item

Only one low beam does 
not light up

Circuit fuse blown

Replace fuse and check for short circuit.

Bulb faulty

Replace bulb.

Igniter faulty

Replace igniter.

Ballast faulty

Replace ballast.

Wiring or ground faulty

Repair circuit.

Low beam does not light 
up

Circuit fuses blown

Replace fuses and check for short circuit.

Headlight low beam relay faulty

Replace relay.

Lighting or dimmer switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Bulbs faulty

Replace bulbs.

Igniters faulty

Replace igniters.

Ballasts faulty

Replace ballasts.

Wiring or ground faulty

Repair circuit.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Only one high beam does 
not light up

Circuit fuse blown

Replace fuse and check for short circuit.

Bulb blown

Replace bulb.

Wiring or ground faulty

Repair circuit.

High beam does not light 
up

Circuit fuses blown

Replace fuses and check for short circuit.

Headlight high beam relay faulty

Replace relay.

Lighting or dimmer switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Bulbs blown

Replace bulbs.

Wiring or ground faulty

Repair circuit.

Condition

Possible cause

Correction / Reference Item

Only one low beam does 
not light up

Circuit fuse blown

Replace fuse and check for short circuit.

Bulb blown

Replace bulb.

Wiring or ground faulty

Repair circuit.

Low beam does not light 
up

Circuit fuse blown

Replace fuses and check for short circuit.

Headlight low beam relay faulty

Replace relay.

Lighting or dimmer switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Bulbs blown

Replace bulbs.

Wiring or ground faulty

Repair circuit.

 BCM faulty (with DRL vehicle or auto-
on headlight vehicle)

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Only one high beam does 
not light up

Circuit fuse blown

Replace fuse and check for short circuit.

Bulb blown

Replace bulb.

Wiring or ground faulty

Repair circuit.

High beam does not light 
up

Circuit fuse blown

Replace fuses and check for short circuit.

Headlight high beam relay faulty

Replace relay.

Lighting or dimmer switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Bulbs blown

Replace bulbs.

Wiring or ground faulty

Repair circuit.

Lighting Systems:  9B-10

Auto-On Headlight System Symptom Diagnosis (If Equipped)

S5JB0A9204018

NOTE

• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or 

output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of 
SUZUKI Scan Tool” under “Scan Tool Data in Section 10B”.

• Check each part in the order from the top of the following list.

 

DRL System Symptom Diagnosis (If Equipped)

S5JB0A9204009

NOTE

• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or 

output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of 
SUZUKI Scan Tool”. 

• Check each part in the order from the top of the following list.

 

Condition

Possible cause

Correction / Reference Item

Headlights are not turned 
ON or OFF automatically 
even after darkened or 
lightened

Circuit fuse blown

Replace fuse and check for short circuit.

Parking brake switch faulty

Check parking brake switch referring to 
“Parking Brake Switch Inspection in Section 
9C”.

Lighting or dimmer switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Auto-on headlight sensor faulty

Check auto-on headlight sensor referring to 
“Auto-On Headlight Sensor Inspection (If 
Equipped)”.

Wiring or ground faulty

Repair circuit.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Condition

Possible cause

Correction / Reference Item

Headlight does not light 
when lighting switch is in 
OFF position and engine 
is running

Lighting switch faulty

Check lighting switch referring to “Headlight 
Switch (in Lighting Switch) Inspection”.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Wiring or grounding faulty

Repair circuit.

Headlight lights even if 
engine stop and lighting 
switch is OFF position

Lighting switch faulty

Check system referring to “Headlight Switch (in 
Lighting Switch) Inspection”.

Wiring or grounding faulty

Repair circuit.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.