Suzuki Grand Vitara JB627. Manual - part 373

9B-17 Lighting Systems: 

Reference waveform No.1
Vehicle speed signal (1).
Vehicle speed signal is pulse. Pulse frequency varies depending on vehicle speed.

Repair Instructions

Headlight Housing Removal and Installation

S6JB0B9206001

WARNING

!

 

Be sure to read “Precautions for Discharge 
Headlight Service (If Equipped)” before 
starting to service work.
Neglecting them may result in personal 
injury.

 

Removal

1) Disconnect negative (–) cable at battery.
2) Remove front bumper. Refer to “Front Bumper 

Components in Section 9K”.

3) Remove headlight mounting bolts.
4) Detach headlight housing (1) from vehicle.
5) Disconnect couplers from headlight housing (1).

Installation
Reverse removal procedure noting the following.
• After installation, be sure to inspect and adjust aiming 

referring to “Headlight Aiming Adjustment with 
Screen”.

Headlight Bulb Replacement

S6JB0B9206002

WARNING

!

 

• To avoid danger of being burned, don’t 

touch when the bulb is hot.

• Don’t touch glass surface of bulb, to avoid 

deteriorate as the case may be unclear 
when bulb light on at dirty condition.

• Be sure to read “Precautions for Discharge 

Headlight Service (If Equipped)” before 
starting to service work.

 

Measurement terminal

CH 1: “G51-16” to “G51-9”

Oscilloscope setting

CH 1: 5 mV
TIME: 200 ms/DIV

Measurement condition

Engine is running and vehicle speed 10 km/h (6 mph)

I5JB0A920037-01

1

I5JB0A920015-01

Lighting Systems:  9B-18

Discharge Headlight Bulb

1) Check to ensure that lighting switch is at OFF 

position.

2) Disconnect negative (–) cable at battery.
3) Remove headlight housing referring to “Headlight 

Housing Removal and Installation”.

4)  Remove cover (1) from headlight housing by turning 

it counterclockwise.

5) Remove igniter (2) from discharge headlight bulb by 

turning it counterclockwise.

6) Replace bulb (1) from headlight housing.

7) Install igniter (2) to discharge headlight bulb by 

turning it clockwise.

8) Install cover to headlight housing by turning it 

clockwise.

9) Install headlight housing to vehicle body referring to 

“Headlight Housing Removal and Installation”.

10) Connect negative (–) cable at battery.

11) After installation, be sure to inspect and adjust 

aiming referring to “Headlight Aiming Adjustment 
with Screen”.

Other Than Discharge Headlight Bulb

1) Disconnect negative cable at battery.
2) Disconnect headlight coupler.
3) Remove socket cover (if equipped).
4) Remove headlight bulb (1) as shown.
5) Install new headlight bulb and assemble all removed 

parts.

1

2

I5JB0A920016-01

1

iii)

ii)

ii)

i)

i)

I5JB0A920017-01

[A]: Low beam bulb of headlight in which low and high beam bulbs are 

separated (bulb lock type)

[B]: Low beam bulb of headlight in which low and high beam bulbs are 

separated (socket lock type)

[C]: High beam bulb of headlight in which low and high beam bulbs are 

separated

[D]: Bulb in which low and high beams are integrated

2. Headlight bulb socket

iii)

ii)

i)

1

iii)

ii)

i)

1

ii)

i)

[A]

[B]

[C]

[D]

ii)

i)

iii)

ii)

1

2

1

2

iv)

i)

iv)

iii)

I5JB0D920017-01

9B-19 Lighting Systems: 

Ballast Removal and Installation

S6JB0B9206003

WARNING

!

 

Be sure to read “Precautions for Discharge 
Headlight Service (If Equipped)” carefully 
before working. Neglecting them may result 
in personal injury.

 

Removal

1) Check to ensure that lighting switch is at OFF 

position.

2) Disconnect negative (–) cable at battery.
3) Remove headlight housing referring to “Headlight 

Housing Removal and Installation”.

4) Remove ballast (1) from headlight housing (2).
5) Disconnect connector (3) from ballast.

Installation
Reverse removal procedure noting the following.
• Connect connectors securely.
• After installation, be sure to inspect and adjust aiming 

referring to “Headlight Aiming Adjustment with 
Screen”.

Igniter Removal and Installation

S6JB0B9206004

WARNING

!

 

Be sure to read “Precautions for Discharge 
Headlight Service (If Equipped)” carefully 
before working. Neglecting them may result 
in personal injury.

 

Removal

1) Remove ballast referring to “Ballast Removal and 

Installation”.

2) Remove cover (1) from headlight housing by turning 

it counterclockwise.

3) Remove igniter (2) from discharge headlight bulb by 

turning it counterclockwise.

4) After disconnecting ground wire (1), pull out igniter 

(2) from headlight housing.

Installation
Reverse removal procedure noting the following.
• Connect connectors securely.
• After installation, be sure to inspect and adjust aiming 

referring to “Headlight Aiming Adjustment with 
Screen”.

1

2

3

I5JB0A920019-01

1

2

I5JB0A920020-01

1

2

I5JB0A920021-01

Lighting Systems:  9B-20

Headlight Aiming Adjustment with Screen

S6JB0B9206005

NOTE

• Unless otherwise obligated by local regulations, adjust headlight aiming according to the following 

procedure.

• After replacing headlight housing, be sure to adjust aiming.
• When inspecting and adjusting headlight with leveling system, make sure to set the leveling switch 

to “0” position with ignition switch turned ON.

 

1) Make sure the following items.

• Place vehicle on a flat surface in front of blank wall (screen) (1) ahead of headlight surface.

Distance “a”
10 m (32.8 ft.)

• Adjust air pressure of all tires to the specified value respectively.
• Bounce vehicle body up and down by hand to stabilize suspension.
• Carry out aiming with a driver aboard.

Driver’s weight
75 kg (165 lb)

2) Check to see if hot spot (high intensity zone) of each low beam axis falls as shown in figure.

NOTE
If the headlights interfere each other and make it hard to see the cut line clearly, cover the headlight on 
one side. This helps to make aiming adjustment easier.

 

Hot spot specification
Angle “b”: 0.75

° (Specification)

Calculated distance “H”: Approx. 130 mm (5.15 in.)

3) Align headlight aiming to specification by adjusting aiming gear if it is not set properly.