10B SUZUKI SX4 2006 1.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-71
DTC Detecting Condition and Trouble Area
DTC TroubleshootingDTC detecting condition Trouble area
Serial communication signal is higher than or lower than specified value for
specified time continuously.• Back-up power supply circuit
• Serial communication circuit
•BCM
• Information display
• HVAC control module
Step Action Yes No
1Was “Air Conditioning System Check” performed?Go to Step 2. Go to “Air Conditioning
System Check”.
2Back-up power supply circuit fuse check
1) Check back-up power supply circuit fuse for blowing.
Is fuse(s) blown?Replace blown fuse and
check for short in back-
up power supply circuit.Go to Step 3.
3Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from BCM, information display
and HVAC control module.
3) Check for proper connection to serial communication
circuit terminal of BCM, information display and HVAC
control module connectors.
4) If OK, check that serial communication circuit is as
follows.
• Wiring harness resistance of serial communication
circuit is less than 3 Ω
• Insulation resistance between serial communication
circuit terminal and vehicle body ground is Infinity
• Circuit voltage of serial communication circuit is 0 - 1
V with ignition switch turned ON
Are they in good condition?Go to Step 4. Serial communication
circuit is open, short or
high resistance.
4Serial communication signal check
1) Connect connectors to BCM and HVAC control module
with ignition switch turned OFF.
2) Turn ignition switch to ON position.
3) Check that serial communication signal is outputted from
BCM referring to “Voltage Check” under “Inspection of
BCM and Its Circuits in Section 10B”.
Is serial communication signal outputted?Replace information
display.Go to Step 5.
5Communication data check
1) Connect connector to information display with ignition
switch turned OFF.
2) Check that serial communication signal is outputted from
BCM referring to “Voltage Check” under “Inspection of
BCM and Its Circuits in Section 10B”.
Is serial communication signal outputted?Substitute a known-
good HVAC control
module and recheck.Substitute a known-
good BCM and recheck.

Downloaded from www.Manualslib.com manuals search engine 8B-29 Air Bag System:
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
• Clear DTCs of BCM referring to “DTC Clearance in Section 10B”.
• Clear DTC B1157 (air bag deployed) of BCM referring to “DTC Clearance in Section 10B”, if any.

DTC B1024 / B1025: Side Air-Bag Deployment RecordS6RW0D8204052
DTC B1024: Driver Side Air-Bag Deployment Record
DTC B1025: Passenger Side Air-Bag Deployment Record
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
• Clear DTC B1157 (air bag deployed) of BCM referring to “DTC Clearance in Section 10B”, if any.

DTC B1026: Seat Belt Pretensioner Activation RecordS6RW0D8204016
DTC Detecting Condition and Trouble AreaDTC detecting condition Trouble area
DTC B1024:
Deployment of driver side-air bag has been recorded in
SDM.
DTC B1025:
Deployment of passenger side-air bag has been recorded
in SDM.If this DTC has been recorded even though side-air bag
has not been deployed
•SDM
• Driver (passenger) side-air bag module
• Its initiator circuit
Step Action Yes No
1Was “Air Bag Diagnostic System Check Flow” performed?Go to Step 2. Go to “Air Bag
Diagnostic System
Check Flow”.
2Side-air bag deployment check
1) Turn OFF ignition switch.
2) Check that DTC B1024 or B1025 has been set although
side-air bag has not been deployed.
Has air bag deployed?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Go to Step 3.
3Side impact sign (driver / passenger) check
1) Inspect side of vehicle and undercarriage for signs of
impact.
Are there any signs of impact?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Replace SDM.
DTC detecting condition Trouble area
Activation of seat belt pretensioner has been recorded in
SDM.If this DTC has been recorded even though pretensioner
has not been activated
•SDM
• Driver and/or Passenger seat belt pretensioner
• Those initiator circuit

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-30
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
• Clear DTC B1157 (air bag deployed) of BCM referring to “DTC Clearance in Section 10B”, if any.

DTC B1027: Number of Deployment Times Exceeded LimitS6RW0D8204017
DTC Detecting Condition and Trouble Area
NOTE
DTC B1027 can never be cleared once it has been set.

DTC Trouble shootingStep Action Yes No
1Was “Air Bag Diagnostic System Check Flow” performed?Go to Step 2. Go to “Air Bag
Diagnostic System
Check Flow”.
2Seat belt pretensioner activation check
1) Turn OFF ignition switch.
2) Check that DTC B1026 has been set although
pretensioner has not been activated.
Has pretensioner activated?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Go to Step 3.
3Front impact sign check
1) Inspect front of vehicle and undercarriage for signs of
impact.
Are there any signs of impact?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Replace SDM.
DTC detecting condition Trouble area
Deployment of air bag and/or activation of seat belt
pretensioner have been recorded in SDM 5 times or
more.If this DTC has been recorded even though air bag (front
and side) and pretensioner have not been deployed more
than 4 place.
• SDM (internal fault or reused SDM)
• Each of deployment and activation module
• Those initiator circuit
Step Action Yes No
1Was “Air Bag Diagnostic System Check Flow” performed?Go to Step 2. Go to “Air Bag
Diagnostic System
Check Flow”.
2Air bag deployment check
1) Turn OFF ignition switch.
2) Check that DTC B1027 has been set although air bag
(front and side) and pretensioner has not been
deployed.
Have air bag and pretensioner deployed more than 4 place?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Go to Step 3.
3Impact sign check
1) Inspect front, side of vehicle and undercarriage for signs
of impact.
Are there any signs of impact?Inspect and replace
components according
to “Repair and
Inspection Required
after Accident”.Replace SDM.

Downloaded from www.Manualslib.com manuals search engine 8B-31 Air Bag System:
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
• Clear DTC B1157 (air bag deployed) of BCM referring to “DTC Clearance in Section 10B”, if any.

DTC B1031: Driver Air Bag Circuit High Resistance S6RW0D8204018
Wiring Diagram
DTC Detecting Condition and Trouble Area
“L04”“L04”[A]
BLK
L04-28
6 8
7
RED
GRN“L313”L04-27
910
L04-3 L04-4
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
12 [L04]
[G347]12 [L378]
15
13
16
12V5V30V 30V
141112
GRN/RED GRN/RED
GRN GRN
“G347” “S172” “L378” “G345”
1
2 BLKWHT3
4
5
I6RW0C820008-01
[A]: Shorting bar 6. Ignition switch 12. Driver air bag (inflator) module
1. Battery 7. “A/B” fuse 13. DC / DC converter
2. Fuse 8. Junction block assembly 14. Back up capacitor
3. Main fuse box 9. Ground for air bag system 15. Safing power driver
4. “IGN” fuse 10. SDM 16. Mechanical longitudinal G sensor (switch)
5. Individual circuit fuse box No.1 11. Contact coil assembly
DTC detecting condition Trouble area
Driver air bag circuit is more than 5.2 Ω for more than 4
sec.• Driver air bag circuit
• Contact coil assembly
• Driver air bag module
•SDM

Downloaded from www.Manualslib.com manuals search engine 9A-99 Wiring Systems:
B-6 Power Mirror Circuit Diagram (Except Taiwan)S6RW0D910E048
13
13
5
9
R
L
3 20
77
J87 L315
L379
J215
6J27
J28
13J215
L379J215
L379
BLK
BLK
17172017
Switch
MotorIF EQPD
MM
DOWN
UP
5
R
L
6
Motor
MMM
DOWN
SET RTR
UP
M
SET RTR
4
3
27
B
B
421
BLU/WHT
BLU/WHT
ACC
15A23RR
DEF
30A38
19 28 2930
19 28 29
L380
J216L379
J21530
LT GRNBLK/RED
LT GRN
GRN/YEL
LT GRN
7
2
21
21
YEL/RED
YEL/RED
8
1
22
32
PNK/BLU
PNK/BLU
YEL/REDPNK/BLU
YEL/REDPNK/BLUBLK/RED
BLK/RED
BLK/REDLT GRN
BLU/BLKRED
BLU/BLKRED
BLU/BLKRED
BRN/WHTGRN/ORN
BLKBLK
BLKBLK
BLK
20
BLK
21
BLKBLK
N
UP
DOWN
L
R LHIG GND M2L M1COM
LN
UP
DOWN
L
R RHIG GND M2R M1COM
LSET
RETRACT
RETRACT SW
IG GND OP CL
J216
L38013J215
L379
4 32
1Relay
G0417
L314
J/B
BCM
GY
"B-3"
"B-3"
Mode control
switch
Auto
unit
3
J/C
L348
J/B side connector (BCM)
RHD
LHD AB
C
C
GRN/ORNBRN/WHT
B
GRN/ORNBRN/WHT
B
BLU/BLKRED
B
C
C
C
7
6BC
4
5BC10
12BC5
4BC12
10BC
6
7BC
18 A
I6RW0C910970-01

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-110
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

Downloaded from www.Manualslib.com manuals search engine 9A-111 Wiring Systems:
D-2 Position, Tail and Licence Plate Light System Circuit Diagram (Except Taiwan)S6RW0D910E051
3
5L1341
2O951
2O94
(R) (L)
(L)
(R)
BLK
715G272
G144
10ATAIL
29
1
2E1611
2E162
BLKBLK
BLKBLK
BLK
J/B
L3143E32516
BLKBLK
Licence
plate
light #2 Licence
plate
light #1
3
5L133
BLK
972320
BLK
21
WHT/RED
OFF
TAIL
HEAD+BT T
P
Front
position
light
RED/YEL
RED/YEL
RED/YEL
RED/YELRED/YEL
Tail light
RY
RYRY
WR
RYRY
RED/YEL
RED/YELRED/YEL
RED/YELRED/YELRED/YELRED/YELRED/YEL
4L390
O2315G341
L374
2O231
L390
J/C
G306D
D
5or13
13BC
8or10
10BC
J/B side
connector (BCM)
RHD
LHD
Without ILL cancel switch
With ILL cancel switch A
B
B
3
5L133
(L)
(R)
BLK
3
5L134
BLK
20
Tail light
RED/YELRED/YEL
C
CDE
14
BCM
A
DRL
controller
G2143
5
RED/YEL
RED/GRN
ED
I6RW0D910918-01

Downloaded from www.Manualslib.com manuals search engine 9A-115 Wiring Systems:
D-4 Illumination Light System Circuit Diagram (Except Taiwan)S6RW0D910E053
BLKBLK
BLK
RED/BLU
RED/BLU
11
J/C
J/C
B
B
14
G309
A
A
C
CG306
BLK/YELRED/YEL
BY
YELYEL
YY
Multi information
display
"G-2"Audio
"G-1""C-3"
ILL
cancel
switch
G150758
4
PUSHFREE
WHT/RED
10ATAIL
29J/B
15G272
G144
1721
RED/YELRED/YELRED/YEL
RED/YELRED/YEL
L3143
BLKBLK
BLK
"D-3"
A/T
RY
Switch
J/C
G306
RED/YEL
RY
RED/YEL
Switch
Auto
unit
IF EQPDIF EQPDIF EQPD
RY
RED/YEL
Mode control
switch
"E-1"Tail light
(L)
"D-2"
"E-2"
"D-6"Switch"B-8"
Switch"B-8"
OFF
TAIL
HEAD+BT T
P
7
RY
RED/YEL
Audio
"G-1"
Navigation
"G-4"
D
D
D D D
RY
RED/YEL
D
RED/YEL
Multi
information
display
"G-2"
RED/YEL
RYRYRY
RYRYWR
Tail light
"D-2"Front
position
light
"D-2"
Licence plate
light
"D-2"
2WD/4WD
switch
"A-10"
RED/YELRED/YEL
RED/YEL
E32516
RY
RY
J/C
B
BL348
J/C
C
C
A
L346
L347
A/T
shift
lever
L1012
5
5or13
13BC
8or10
10BC
J/B side connector (BCM)
RHD
LHD
Without ILL cancel switch
With ILL cancel switch ABCDE
B(R)
C
(R)
B(L)
C
BCM
14A
RED/YEL
D
D
E
DRL
controller
G2143
5
RED/YEL
RED/GRN
E
I6RW0D910919-02

Downloaded from www.Manualslib.com manuals search engine 9B-11 Lighting Systems:
Turn Signal and Hazard Warning Light Symptom DiagnosisS6RW0D9204004
Clearance, Tail and License Plate Light Symptom DiagnosisS6RW0D9204005
Condition Possible cause Correction / Reference Item
Flash rate high or one
side only flashesBulb blown on “flash rate high”-sideReplace bulb.
Incorrect bulbReplace bulb.
Turn signal / hazard warning relay faultyCheck turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
Open circuit or high resistance existing
either; between turn signal switch and
non lighting bulb, or between hazard
warning switch and non lighting bulbRepair circuit.
Wiring or grounding faultyRepair circuit.
No flashing
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.

Circuit fuse(s) blownReplace fuse(s) and check for short circuit.
Turn signal / hazard warning relay faultyCheck turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
Turn signal light switch faultyCheck turn signal light switch referring to “Turn
Signal Light Switch (in Lighting Switch)
Inspection”.
Hazard warning switch faultyCheck hazard warning switch referring to
“Hazard Warning Switch Inspection”.
Open circuit or high resistance existing
between battery and switchRepair circuit.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Flash rate lowSupply voltage lowCheck charging system referring to “Generator
Test (Undercharged Battery Check) in Section
1J”.
Turn signal / hazard warning relay faultyCheck turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
Condition Possible cause Correction / Reference Item
All lights do not light upCircuit fuse blownReplace fuse and check for short circuit.
Tail light relay faulty (if equipped)Check tail light relay referring to “Tail Light
Relay, Headlight Relay, Front Fog Light Relay
Inspection (If Equipped)”.
Lighting and dimmer switch faultyCheck lighting and dimmer switch referring to
“Headlight Switch (in Lighting Switch)
Inspection”.
Wiring or grounding faultyRepair circuit.
Some lights do not light
upBulb(s) blownReplace bulb(s).
Wiring or grounding faultyRepair circuit.

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.