2006 SUZUKI SX4 Headlight

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Junction Block Inner Circuit (Overview (Taiwan))S6RW0D910D007
Abbreviations
Abbreviation Full term Abbreviation Full term
AS Assistant (Front passenger) LP Lamp
CTR Center O/H Over head
DR Driver R/B Relay box
F-L Front L R-L Rear L
F-R Front R R-R Rear R
FR Front RR Rear
INP Instrument panel S/H Seat heater
LEV (Headlight) leveling

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System Circuit Diagram
System Circuit DiagramS6RW0D910E001
Refer to “A-1 Cranking System Circuit Diagram”.
Refer to “A-2 Charging System Circuit Diagram”.
Refer to “A-3 Ignition System Circuit Diagram (M15A engine, M16A engine)”.
Refer to “A-3 Ignition System Circuit Diagram (J20A engine)”.
Refer to “A-4 Cooling System Circuit Diagram (M15A engine, M16A engine)”.
Refer to “A-4 Cooling System Circuit Diagram (J20A engine)”.
Refer to “A-5 Engine and A/C Control System Circuit Diagram (M15A engine)”.
Refer to “A-5 Engine and A/C Control System Circuit Diagram (M16A engine)”.
Refer to “A-5 Engine and A/C Control System Circuit Diagram (J20A engine)”.
Refer to “A-6 A/T Control System Circuit Diagram”.
Refer to “A-7 Immobilizer System Circuit Diagram”.
Refer to “A-8 Body Control System Circuit Diagram (Except Taiwan)”.
Refer to “A-8 Body Control System Circuit Diagram (Taiwan)”.
Refer to “A-10 4WD Control System (Except Taiwan)”
Refer to “B-1 Windshield Wiper and Washer Circuit Diagram”.
Refer to “B-2 Rear Wiper and Washer Circuit Diagram (Except Taiwan)”.
Refer to “B-2 Rear Wiper and Washer Circuit Diagram (Taiwan)”.
Refer to “B-3 Rear Defogger Circuit Diagram (Except Taiwan)”.
Refer to “B-3 Rear Defogger Circuit Diagram (Taiwan)”.
Refer to “B-4 Power Window Circuit Diagram”.
Refer to “B-5 Power Door Lock Circuit Diagram (Except Taiwan)”.
Refer to “B-5 Power Door Lock Circuit Diagram (Taiwan)”.
Refer to “B-6 Power Mirror Circuit Diagram (Except Taiwan)”.
Refer to “B-6 Power Mirror Circuit Diagram (Taiwan)”.
Refer to “B-7 Horn Circuit Diagram”.
Refer to “B-8 Seat Heater Circuit Diagram”.
Refer to “B-9 Keyless Start System Circuit Diagram”
Refer to “C-1 Combination Meter Circuit Diagram (Meter)”.
Refer to “C-2 Combination Meter Circuit Diagram (Indicator)”.
Refer to “C-3 Combination Meter Circuit Diagram (Warning Light)”.
Refer to “D-1 Headlight System Circuit Diagram (Except Taiwan)”.
Refer to “D-1 Headlight System Circuit Diagram (Taiwan)”.
Refer to “D-2 Position, Tail and Licence Plate Light System Circuit Diagram (Except Taiwan)”.
Refer to “D-2 Position, Tail and Licence Plate Light System Circuit Diagram (Taiwan)”.
Refer to “D-3 Front Fog Light System Circuit Diagram (Except Taiwan)”.
Refer to “D-3 Front Fog Light System Circuit Diagram (Taiwan)”.
Refer to “D-4 Illumination Light System Circuit Diagram (Except Taiwan)”.
Refer to “D-4 Illumination Light System Circuit Diagram (Taiwan)”.
Refer to “D-5 Interior Light System Circuit Diagram (Except Taiwan)”.
Refer to “D-5 Interior Light System Circuit Diagram (Taiwan)”.
Refer to “D-6 Turn Signal and Hazard Warning Light System Circuit Diagram (Except Taiwan)”.
Refer to “D-6 Turn Signal and Hazard Warning Light System Circuit Diagram (Taiwan)”.
Refer to “D-7 Brake Light System Circuit Diagram”.
Refer to “D-8 Back-Up Light System Circuit Diagram”.
Refer to “D-9 Headlight Beam Leveling System Circuit Diagram (Manual Leveling)”.
Refer to “D-10 Rear Fog Light Circuit Diagram”.
Refer to “E-1 Heater System Circuit Diagram”.
Refer to “E-2 Auto A/C System Circuit Diagram”.
Refer to “F-1 Air-Bag System Circuit Diagram (4ch)”.
Refer to “F-1 Air-Bag System Circuit Diagram (8ch)”.
Refer to “F-2 Anti-Lock Brake System Circuit Diagram”.
Refer to “F-4 Power Steering System Circuit Diagram”.
Refer to “G-1 Audio System Circuit Diagram”.
Refer to “G-2 Multi Information Display / Accessory Socket System Circuit Diagram”.
Refer to “G-4 Navigation System Circuit Diagram”.

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D-1 Headlight System Circuit Diagram (Except Taiwan)S6RW0D910E049
1
Headlight
(R)Headlight
(L)
WHT/BLU
RED
Dimmer / Passing
switch
Light switch
2
233 15
1
22
G241
E151
G272
E152
G2715
32
WHT/RED
WHT/RED
WHT/RED
15A
37DOME
WHT/RED
BLK
13
G144
15A
16
15A
15H/L RH/L L
13
RED
RED
J/B
10ATAIL
29
RED/WHT
RED/WHT
RED/WHT
6
RED/WHT
E382
G334
REDREDRED/WHTRED/WHTRED/WHT
BEAM
FLASHUPLOW T
P(ED)EL
UP LOW
OFF
TAIL
HEAD-BT T
P(H) EL
RY
RED/YEL
"D-4"
BCM
RWRRRW
Individual circuit
fuse box (No.1)
B
B
J/C
G308
RHD
LHD
Without DRL controller
With DRL controller ABCD
5or13
13AB8or10
10A
C
B910or8
8A
C
D
D
B
7or11
11AB
4
1
2
RED/GRN
D
3
I6RW0D910916-01

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D-1 Headlight System Circuit Diagram (Taiwan)S6RW0D910E022
2
Headlight
(L) Headlight
(R)
Headlight
HI relay
(L)
WHT/RED
WHT/REDWHT/BLURED/WHTRED/WHT
Dimmer / Passing
switch
Light switch
1
13 3
2
E152 E151
RED/YEL
WHT/BLU
82 13G144
15A
15
15A
16H/L L H/L R
BRNBRN/WHTWHT/RED
WHT/RED
13
RED
RED
RED/WHT
RED
REDREDBLKBLK
RED/WHT
YEL
6E382
G334
GRN/WHT
WHT/RED
BRN/WHTGRN/WHT
WHT/BLU
GRNBLKBLK
FLASHUPLOW T
P(ED)EL
UP LOW
OFF
TAIL
HEAD+BT T
P(H) EL
BLK
RY"A-8"Y"A-8"
Individual
fuse
box
(No.1)
10BLKBLK
BLK
11
613
BCM
REDRED
RR"A-8"
BCMBCM
E233
534
1
Headlight
LO relay
(R)
E247
534
1
Headlight
LO relay
(L)
E248
534
1
Headlight
HI relay
(R)
E232
534
1
22
G241
G2715
32
15A
37DOMEJ/B
BEAM
9
B
B
J/C
G308
I6RW0C910977-01

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D-9 Headlight Beam Leveling System Circuit Diagram (Manual Leveling)S6RW0D910E056
10A
GRN
GRN
RED/BLK
GRN
BLK
BLK
switch
21BACK
RED/BLKRED/BLK
E69 G2723E683
2or1
8E32514
2or1 1or2
G152E381
G33343
51
G333
E38121or2
BLKBLK
Actuator (L)
Actuator (R) Control circuit
RED/BLK
R1
P0
P1
P2
P3
P4 R2
R3
R4
R5
R6
J/B
BLK
97
MControl circuitM
I6RW0D910921-01

Downloaded from www.Manualslib.com manuals search engine 9B-1 Lighting Systems:
Body, Cab and Accessories
Lighting Systems
Precautions
Precautions for Discharge Headlight Service (If Equipped)S6RW0D9200001
WARNING!
• Do not touch igniter or ballast when lighting switch is at “HEAD” position to avoid possible electric
shock.
• Do not measure voltage or resistance with tester connected to output connector of ballast or igniter
to avoid possible electric shock.
• Do not perform work where exposed to water including rain or with wet hands to avoid possible
electric shock.
• Disassembling igniter or ballast is strictly prohibited as it may cause an electric shock.
• Before inspecting or repairing discharge headlight or its peripheral parts, make sure that lighting
switch is at OFF position and battery is disconnected at negative terminal to avoid possible
electrical shock.
• Do not set lighting switch to “HEAD” position with connector disconnected or any part removed to
avoid possible electric shock.
• Do not touch glass surface of headlight bulb. Oil or grease attached on it may not only make bulb
service life shorter but also cause bulb to burst when lighting switch is turned on.
• Mercury, metal iodide and xenon gas are sealed in discharge headlight bulb. Be sure to dispose of
used discharge headlight bulb properly according to applicable rules or regulations.

Precautions in Diagnosing Troubles (Headlight Auto Leveling System)S6RW0D9200002
• Be sure to read “Air Bag Warning in Section 00” before inspection and observe what is written there.
• Replacement of height sensor and headlight leveling control module. When height sensor and/or headlight leveling
control module is replaced with new one, perform initialization of headlight auto leveling system according to
“Initialization of Headlight Auto Leveling System”.
General Description
Discharge Headlight Description (If Equipped)S6RW0D9201001
Discharge headlight provides more brightness and consumes less electricity as compared with the conventional
halogen headlight. It consists of a ballast (1), igniter (2) and discharge headlight bulb (3).
Ballast
Ballast makes the voltage from the battery rise and converts the current from DC to AC. It also outputs high voltage to
the igniter when the headlight is turned on and supplies to discharge headlight bulb with necessary voltage for
continuous lighting while it is lit.
2
1 3
I6RW0C920001-01

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Igniter
Igniter generates high voltage needed to turn on the discharge headlight. It is charged with high voltage raised by the
ballast and it applies voltage pulse as high as about 20,000V to the tungsten electrode in the discharge headlight bulb.
After the discharge headlights light up, the ballast supplies voltage to bulbs.
Discharge headlight bulb
Discharge headlight bulb is used for the low beam. It does not have a filament but xenon gas (1), mercury (3) and
metal iodide (2) sealed in it. It lights up when its tungsten electrodes (4) apply high voltage to these contents.
Fail-safe function of discharge headlight
As the ballast has a fail-safe function which stops supply of the voltage to the igniter when it detects any of the
following condition.
• Ignition switch is set to “HEAD” position while igniter is not connected to discharge headlight bulb
• Discharge headlight does not light up even when lighting switch is set to “HEAD” position.
• Ballast detects a short in the circuit between discharge headlight bulb and ballast when lighting switch is at “HEAD”
position.
Headlight Auto Leveling System Description (If Equipped)S6RW0D9201002
Headlight Auto Leveling System adjusts the optical axis of the headlight automatically to be suitable for the varied
vehicle position while the headlights are lit. It consists of front height sensor (1), rear height sensor (2), headlight
leveling control module (3), headlight leveling actuator (4) and headlight leveling warning light (5).
123
44
I5JB0A920001-01
4
3
5
1
2
I6RW0C920002-01

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With more passenger(s) or luggage in the vehicle, the vehicle position differs from that in such vehicle state with one
person and no load in the vehicle and angle of the headlight optical axis varies accordingly. This system automatically
adjusts the varied angle to maintain the optical axis properly.
Front and rear height sensors
Front height sensor (1) is installed to the front suspension frame (2) respectively and connected to the lower arm (4)
with the link (3). Also rear height sensor is installed to the rear floor center cross member (5) respectively and
connected to the rear axle (6) with the link (3). Each height sensor converts vertical movement of the lower arm into
the resistance value and outputs the detected change in the vehicle position as a voltage signal to the headlight
leveling control module.
Headlight leveling control module
Headlight leveling control module is installed at the inside of the glove box. It uses the headlight ON signal from the
lighting switch, vehicle speed signal from BCM and vehicle position signal from height sensors to calculate the angle
of the headlight optical axis to be corrected. Then it adjusts the optical axis angle of headlight based on the calculated
angle value by driving the headlight leveling actuator so that proper headlight aiming is obtained. Also, when any
abnormality is detected in the system, the headlight leveling control module makes the headlight leveling warning light
in the combination meter light up to warn the driver of an abnormality in the system.
Fail-safe function of headlight leveling control module
Headlight leveling control module has a fail-safe function which operates as follows.
[A]
[A]
[B]
I6RW0C920003-01
[A]: Optical axis of headlight in standard position
[B]: Corrected optical axis of headlight
1
5
[A] [B]
6
3
1
2
3
4I6RW0C920004-01
[A]: Front [B]: Rear
Detecting condition Fail-safe operation Warning light
Power voltage supplied to headlight
leveling control module is higher than
18.5VStops headlight leveling actuator operation. OFF
Power voltage supplied to headlight
leveling control module is lower than 9VStops headlight leveling actuator operation. OFF
Vehicle speed is 180km/h or higher Stops headlight leveling actuator operation. OFF