2006 SUZUKI SX4 Can

Downloaded from www.Manualslib.com manuals search engine 9B-13 Lighting Systems:
Illumination Cancel System Symptom Diagnosis (If Equipped)S6RW0D9204010
Interior Light Symptom DiagnosisS6RW0D9204011
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 Operation Inspection (If Equipped)S6RW0D9204012
1) Confirm that lighting switch is in OFF position.
2) Confirm that dimmer and passing switch is in low beam position.
3) Check DRL for operation as follows.
a) Turn ignition switch to ON position and check headlights remain OFF.
b) Start engine and run it at idle speed. Check headlights turn ON at low beam.
c) Switch dimmer and passing switch to high beam position and check headlights remain turning ON at low
beam.
4) If check result is not as satisfied, go to “Inspection of DRL Controller and Its Circuits (If Equipped)”.
Inspection of DRL Controller and Its Circuits (If Equipped)S6RW0D9204013
1) Confirm that lighting switch is in good condition referring to “Headlight Switch (in Lighting Switch) Inspection”.
2) Confirm that oil pressure switch is in good condition referring to “Oil Pressure Switch Inspection in Section 9C”.
3) Remove glove box.
4) Remove DRL controller (1) from steering support member.
5) Connect connector to DRL controller.Condition Possible cause Correction / Reference Item
Illumination cancel do not
normal operationCircuit fuse blownReplace fuse and check for short circuit.
Illumination cancel switch faultyCheck illumination cancel switch referring to
“Illumination Cancel Switch Inspection (If
Equipped)”.
Combination meter and/or information
display faultyReplace combination meter and/or information
display.
Wiring or grounding faultyRepair circuit.
Condition Possible cause Correction / Reference Item
Dome light does not light
upBulb blownReplace bulb.
Circuit fuse blownReplace fuse and check for short circuit.
Dome light switch faultyCheck dome light switch.
Door switch faultyCheck door switch referring to “Door Switch
(Front / Rear Door) Inspection in Section 9C”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Luggage compartment
light does not light up (if
equipped)Bulb blownReplace bulb.
Rear end door switch faultyCheck switch referring to “Rear End Door
Switch Inspection in Section 9C”.
Wiring or grounding faultyRepair circuit.

Downloaded from www.Manualslib.com manuals search engine 9B-15 Lighting Systems:
Auto-On Headlight Operation Inspection (If
Equipped)
S6RW0D9204021
1) Turn ignition switch to ON position and then turn
lighting switch to “AUTO” position.
2) Check headlights for operation as follows. If
headlights do not turn ON or OFF, go to “Inspection
of Auto-On Headlight Controller and Its Circuit (If
Equipped)”.
a) Cover auto-on headlight sensor by hand and
check that headlights light up then.
b) Light over auto-on headlight sensor vertically
with on incandescent lamp of approx, 100 W
apart from about 100 mm (3.94 in.) (1) and check
that headlights go off then.
Inspection of Auto-On Headlight Controller and Its Circuit (If Equipped)S6RW0D9204022
1) Confirm that lighting switch is in good condition referring to “Headlight Switch (in Lighting Switch) Inspection”.
2) Remove steering column hole cover.
3) Remove auto-on headlight controller (1) from steering support member.
4) Connect connector to auto-on headlight control module.
5) Check that the voltage between the following terminals and vehicle body ground are specifications under each
condition.
If measuring voltage is not within specification, check applicable circuit for open or short. If circuits are normal,
replace auto-on headlight controller.
If measuring voltage is within specification, auto-on headlight controller and its circuits are good condition.
[A]: Fig. for Step a) [B]: Fig. for Step b)
[A] [B]
1
I6RW0C920010-02
1
4321
8765
V
[A]
I6RW0C920011-01
[A]: Auto-on headlight controller connector viewed from harness side
Terminal Circuit Specification Condition
1 Tail light control signal0 VLighting switch at “AUTO”
position, tail / position light at
ON.
10 – 14 VIgnition switch is at ON
position, lighting switch at
“OFF” position.
2 Headlight control signal0 VLighting switch at “AUTO”
position, headlight at ON.
10 – 14 VIgnition switch is at ON
position, lighting switch at
“OFF” position.
3Power supply for auto-on
headlight sensorAbout 5 VIgnition switch is at OFF
position.

Downloaded from www.Manualslib.com manuals search engine Lighting Systems: 9B-16
Inspection of Headlight Leveling Control Module and Its Circuit (Headlight Auto Leveling System)S6RW0D9204023
Headlight auto leveling control module and its circuits can be checked at headlight auto leveling control module wiring
couplers by measuring voltage and pulse signal.
CAUTION!
Headlight auto leveling control module cannot be checked by itself. It is strictly prohibited to connect
voltmeter or ohmmeter to headlight auto leveling control module with couplers disconnected from it.

Voltage Check
Check voltage between each terminal of headlight auto leveling control module and vehicle body ground under each
condition. If measured voltage is out of standard value, check circuit (including switch and sensor) of terminal where
voltage was measured.
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal. Check it with
oscilloscope if necessary.

4Auto-on headlight sensor
signal3 – 4.5 VLight the sensor lens with
incandescent lamp 100 W
Less than 1 VCover the sensor lens with
hand.
5Ground for auto-on headlight
controller0 V —
6Ground for auto-on headlight
sensor0 V —
7 Lighting switch signal0 VIgnition switch is at ON
position, lighting switch at
“AUTO” position.
1.0 – 5.0 VIgnition switch is at ON
position, lighting switch at other
than “AUTO” position.
8 Ignition switch signal 10 – 14 VIgnition switch is at ON
position. Terminal Circuit Specification Condition
V
10 11 12 13 16 17 18 19 2031 5 6 9
21 22 23 24
[A]
I6RW0C920012-01
[A]: Headlight leveling control module connector (viewed from harness side)

Downloaded from www.Manualslib.com manuals search engine 9B-27 Lighting Systems:
2) Check to see if hot spot (high intensity zone) of each
front fog light axis falls as shown in the figure.
NOTE
If the fog lights interfere each other and make
it hard to see the cut line clearly, cover the
fog light on one side. This helps to make
aiming adjustment easier.

Hot spot specification
Angle “b”: 1.14° (Specification)
Calculated distance “H”: Approx. 199 mm (7.83
in.)
3) If it is not set properly, align front fog light to
specification by rotating aiming gear.
Rear Fog Light Switch Inspection (If Equipped)S6RW0D9206021
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.
2. Bounding line
3. Hot spot
4. Aiming gear (for up / down adjustment)
5. Turning (for up adjustment)
6. Turning (for down adjustment)
7. Front fog light assembly
X-X: Horizontal center line of front fog light bulb
A-A: Vertical center line of left front fog light bulb
B-B: Vertical center line of right front fog light bulb
[A]: Left front fog light
[B]: Right front fog light
32
2
AB AB
[A] [B]X X
1
“H”
“H” “H” “b”
“a”
54
7
67I6RW0C920020-01
Terminal
Shaft condition12
OFF
ON
ON
OFF
2 1
I4RS0B920013-01

Downloaded from www.Manualslib.com manuals search engine 9B-31 Lighting Systems:
Without initialization of the headlight auto leveling
system, it is not possible to obtain its proper function.
Also, if the headlight auto leveling 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.Auto-On Headlight Sensor Inspection (If
Equipped)
S6RW0D9206031
1) Disconnect negative (–) cable at battery.
2) Remove auto-on headlight sensor (1) located on the
passenger side of the dashboard (2). Be careful not
to damage the sensor (1) and dashboard by using
rag (3).
3) Measure voltage between white wire terminal and
black wire terminal at the following condition.
If measured voltage is out of specification, replace
sensor.
Auto-on headlight sensor voltage specifications
Cover the sensor lens with hand: 0.4 V
Light the sensor lens with incandescent lamp
100 W: 3 – 4.5 V3
1
2
I6RW0C920021-01
1
I6RW0C920009-01
2
1
3I5JB0A920038-01
I5JB0A920039-01

Downloaded from www.Manualslib.com manuals search engine Lighting Systems: 9B-32
Illumination Cancel Switch Inspection (If
Equipped)
S6RW0D9206022
Check for continuity between terminals at each switch
position.
If check result is not as specified, replace switch.
Tail Light Relay, Headlight Relay, Front Fog
Light Relay Inspection (If Equipped)
S6RW0D9206032
1) Remove tail light relay (1), headlight relay and/or
front fog light relay (2).
2) Check that there is no continuity between terminal
“3” and “4”. If there is continuity, replace relay.
3) Connect battery positive (+) terminal to terminal “2”
of relay.
4) Connect battery negative (–) terminal to terminal “A”
of relay.
5) Check continuity between terminal “3” and “4”. If
there is no continuity when relay is connected to the
battery, replace relay.
1
2
3
Switch PositionTerminal
ON (PUSH IN)123
OFF
I5RW0A920015-01
8
[B] [A]
3
4
1
5 62
2
I6RW0C920027-02
[A]: Junction block with BCM type (other than discharge headlight model)
[B]: Junction block with BCM type (discharge headlight model)
[C]: Junction block without BCM type
3. Headlight low beam relay (left side)
4. Headlight low beam relay (right side)
5. Headlight high beam relay (left side)
6. Headlight high beam relay (right side)
7. Junction block
8. Battery
7
7
5 6
1
8
3
42 [C]
I6RW0C920028-01
“4” “2”“1”“3”
I4RS0A920022-01

Downloaded from www.Manualslib.com manuals search engine Instrumentation / Driver Info. / Horn: 9C-1
Body, Cab and Accessories
Instrumentation / Driver Info. / Horn
Precautions
Precautions in Diagnosing Troubles for Combination MeterS6RW0D9300001
Combination meter uses signals (information) from each control module by CAN communication to control
speedometer, tachometer, fuel meter, engine coolant temp meter, warning light and indicator light (other than air bag
warning light, EPS warning light, headlight leveling warning light (if equipped), rear fog light indicator light (if
equipped), high beam indicator light and turn signal indicator light). Therefor, check that no DTC is detected in each
module before performing combination meter symptom diagnosis. If any DTC is detected, correct trouble indicated by
that DTC troubleshooting first.
General Description
CAN Communication System DescriptionS6RW0D9301001
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
Combination meter communicates control data with each control module as follows.
Combination Meter Transmission Data
BCM
Combination
meterDATA
TransmitCombination meter spec signal
I5RW0A930001-02

Downloaded from www.Manualslib.com manuals search engine 9C-4 Instrumentation / Driver Info. / Horn:
Schematic and Routing Diagram
Combination Meter Circuit DiagramS6RW0D9302001
7
6
5
4G241-99
G241-5
1
2
11
G241-1323
G241-31
G241-263
G241-16
G241-2212
G241-2513
G241-13
8 17
1514
20
G241-32
G241-69
16
18
19
G241-2121
G241-7 G241-10 10
10
G241-1922
I6RW0D930002-01
1. DOME fuse 9. 4WD control module (if equipped) 17. CAN driver
2. METER fuse 10. CAN junction connector 18. Stepper motor and LED output driver
3. Combination switch 11. SDM 19. A/T shift position indicator (“P”, “R”, “N”, “D”, “3”, “2” and “L”)
4. Tachometer 12. Combination switch (high beam) 20. Combination meter
5. Speedometer 13. P/S control module 21. Combination switch (rear fog light)
6. Fuel meter 14. CPU 22. Headlight leveling control module (if equipped)
7. ECT meter 15. Power supply 23. Illumination cancel switch (if equipped)
8. ODO-TRIP 16. Interface circuit