Ignition SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 10B-3 Body Electrical Control System:
When “B” mode is selected and the door is locked using keyless entry transmitter or door request switch, the theft
deterrent light (1) flashes at 0.1 second interval for 20 seconds and the security alarm system is set to the stand-by
mode (2). Once it is set to the stand-by mode, the theft deterrent light blinks at 2 second intervals.
When the system is set to stand-by mode and the door is unlocked by some way other than using keyless entry
transmitter or door request switch and opened or cut off BCM power supply voltage temporarily, the alarm devices
operate according to the selected mode as described above.
The alarm stops under either of the following conditions.
• Ignition switch is turned ON
• A certain time has elapsed since the alarm started
For selection of the mode of the security alarm system, refer to “Security Alarm Mode Selection Procedure (If
Equipped)”.
Input / Output Table
Schematic and Routing Diagram
Body Electrical Control System Wiring Circuit DiagramS6RW0DA202001
NOTE
This wiring diagram shows circuits related to only BCM, not the entire circuits of BCM and junction
block. Refer to “Power Supply Diagram in Section 9A” for wiring circuits other than the figure below.

B AT3
T1
T2 2 C
1
I7RW01A20015-01
A: Indicator light turned ON T1: 0.1 seconds
B: Indicator light turned OFF T2: 20 seconds
C: When door is locked using keyless entry transmitter or door request switch T3: 2 seconds
Input Output
Keyless entry transmitter
Door switch status
Door lock statusBCMHorn relay
Theft deterrent light
(in information display)
Warning buzzer
(located in BCM)
Hazard warning relay
Door request switch signal
Ignition switch
I5RS0CA20003-01

Downloaded from www.Manualslib.com manuals search engine 10B-5 Body Electrical Control System:
1. BCM 23. Brake fluid level switch 45. Passenger side door lock actuator (if equipped)
2. Rear end door opener actuator (if equipped) 24. Parking brake switch 46. Rear door lock actuator (if equipped)
3. Rear end door opener relay (if equipped) 25. Door key cylinder switch (included in door lock
actuator) (if equipped)47. Hazard warning switch
4. Rear washer motor 26. Manual door lock switch (if equipped) 48. Turn signal and hazard warning relay
5. Rear wiper and washer switch 27. Rear end door opener switch (if equipped) 49. To turn signal light
6. Outside air temperature sensor (if equipped) 28. A/C switch (if equipped) 50. Interior light
7. Key reminder switch 29. Rear end door window defogger switch 51. Rear end door window defogger relay
8. Theft deterrent light 30. Rear wiper motor 52. Right side door mirror heater (if equipped)
9. Oil pressure switch 31. Rear wiper relay 53. Left side door mirror heater (if equipped)
10. SDM 32. TCM (A/T model) 54. Rear end door window defogger
11. P/S control module 33. ECM 55. Rear end door window defogger indicator light
12. Navigation (if equipped) 34. ABS control module 56. Horn relay
13. Audio unit (if equipped) 35. Keyless start control module (if equipped) 57. Horn switch
14. Headlight leveling control module (if equipped) 36. CAN junction connector 58. Horn
15. Generator 37. Combination meter 59. Lighting switch
16. Information display (if equipped) 38. 4WD control module (if equipped) 60. Ignition switch
17. HVAC control module (if equipped) 39. DLC 61. Battery
18. Keyless entry receiver (if equipped) 40. To ABS control module and P/S control module 62. Body ground
19. Driver side door switch 41. To SDM 63. Engine ground
20. Other than driver side door switch 42. To HVAC control module (if equipped)

Downloaded from www.Manualslib.com manuals search engine 10B-7 Body Electrical Control System:
Component Location
BCM and Related System Component LocationS6RW0DA203001
13
12 17 18
21 19
14
24 25
2526
2722 23
22
2476
20
11
5
151615
16 [A] [B]
2
9
10
3
8
4
1
I6RW0DA20002-01
[A]: Auto A/C 9. Rear end door opener switch (if equipped) 19. Lighting switch
[B]: Manual A/C 10. Rear end door opener actuator (incorporated in
door switch)20. Manual door lock switch (if equipped)
1. Generator 11. Keyless entry receiver or keyless start control
module (if equipped)21. Key reminder switch (included in ignition switch)
2. Brake fluid level switch 12. Parking brake switch 22. Junction block
3. ECM 13. Seat belt buckle switch 23. BCM
4. Oil pressure switch 14. Theft deterrent light 24. Horn relay
5. Outside air temperature sensor (if equipped) 15. Rear end door window defogger switch 25. Rear wiper relay
6. Door lock actuator (incorporated in key
cylinder switch)16. A/C switch (if equipped) 26. Rear end door window defogger relay
7. Door switch 17. Hazard warning switch 27. Turn signal and hazard warning relay
8. Interior light 18. Rear wiper switch

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-8
Diagnostic Information and Procedures
BCM Self-Diagnosis FunctionS6RW0DA204001
• BCM monitors conditions of the system components and its circuit with ignition switch turned to ON position. When
an abnormality in the system occurs, the area where that abnormality lies is stored in the memory of EEPROM in
BCM.
• DTC can be checked in either one of following ways.
– DTC can be checked by SUZUKI scan tool (2) connected to DLC (1).
– DTC can be read from flashing pattern of Theft deterrent light (3). Also, DTC is displayed on combination meter
(4) at the same time.
BCM Input / Output Table
3
4
2
1
I5RW0AA20007-01
Control Input Output
Power door lock system• Key cylinder switch
• Manual door lock switch• Each door lock actuator
Keyless entry system• Key reminder switch
• Keyless entry receiver
• Driver side door switch• Each door lock actuator
• Turn signal and hazard warning relay
• Interior light
Keyless start system
(Door lock function)• Keyless start control module • Each door lock actuator
• Turn signal and hazard warning relay
• Interior light
Rear wiper • Rear wiper INT switch
• Rear wiper LO switch• Rear wiper relay
Combination meter• Tail light switch
• Oil pressure switch
• Parking brake switch
• Driver side seat belt switch
• Brake fluid level switch
• Generator
• Each door switch• Combination meter
Interior light• Each door switch
• Key reminder switch• Interior light
Warning buzzer• Key reminder switch
• Tail light switch
• Driver side door switch
• Keyless start control module (if equipped)
• TCM (reverse signal) (if equipped)• Warning buzzer (located in BCM)

Downloaded from www.Manualslib.com manuals search engine 10B-11 Body Electrical Control System:
Scan Tool DataS6RW0DA204003
Scan tool data ConditionNormal condition /
reference value
Vehicle Speed )At stop with ignition switch turned ON 0 km/h
Outside air Temp )Reference value is relative to outside air temperature–40 °C – 70 °C
(–40 °F – 158 °F)
Battery Voltage )At specified idle speed after warming up 10 – 14 V
Coolant Temp )At specified idle speed after warming up80 °C – 100 °C
(176 °F – 212 °F)
Engine Speed )Engine idling with no load applied after warming upDesired idle speed
± 50 rpm
Fuel Consumption )At specified idle speed after warming up 0.0 km/l
Key Reminder Sw )Ignition key inserted in ignition key cylinder Key in
Ignition key pulled out from ignition key cylinder Pulled
Rear Wiper Sw )Rear wiper switch at ON position and ignition switch turned ON ON
Rear wiper switch at INT position and ignition switch turned ON INT
Rear wiper switch at OFF position and ignition switch turned ON OFF
Door key Sw )Key cylinder switch of driver side door at lock position LOCK
Key cylinder switch of driver side door not turned Neutral
Key cylinder switch of driver side door at unlock position Unlock
Door Lock Sw )Lock side of manual door lock switch pressed LOCK
Manual door lock switch not pressed Neutral
Unlock side of manual door lock switch pressed Unlock
Driv Door Sw )Driver side door open Open
Driver side door closed Close
Pass Door Sw )Doors other than driver side door open Open
Doors other than driver side door closed Close
Brake Fluid Level )Brake fluid level at MIN level or higher Normal
Brake fluid level lower than MIN level Low
Parking Brake Sw )Parking brake lever pulled ON
Parking brake lever released OFF
Rear Defogger Sw )Rear end door window defogger switch pressed with engine running ON
Rear end door window defogger switch not pressed with engine
runningOFF
Headlight Sw )Lighting switch at HEAD position ON
Lighting switch at OFF position OFF
Tail Light Sw )Lighting switch at HEAD or CLEARANCE position ON
Lighting switch at OFF position OFF
Front Fog Light Sw )Lighting switch at HEAD position and front fog light switch at ON
positionON
Lighting switch at HEAD position and front fog light switch at OFF
positionOFF
Driv Seat belt Sw
)Driver side seat belt fastened Fasten
Driver side seat belt unfastened Unfasten
Rear end door opener )Rear end door opener switch pressed ON
Rear end door opener switch not pressed OFF
Charge light )Engine at stop with ignition switch turned ON ON
Engine running OFF
Oil pressure switch )Engine at stop with ignition switch turned ON ON
Engine running OFF
A/C Switch )A/C and ignition switch turned ON ON
A/C switch turned OFF OFF

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-14
DTC CheckS6RW0DA204005
Using SUZUKI Scan Tool
1) Prepare SUZUKI scan tool.
2) With ignition switch turned OFF, connect it to data link connector (DLC) located on underside of instrument panel
of driver’s side.
Special tool
(A): SUZUKI scan tool
3) Turn ignition switch ON.
4) Read DTC according to instructions displayed on SUZUKI scan tool and print it or write it down.
Refer to SUZUKI scan tool operator’s manual for further details.
If communication between SUZUKI scan tool and BCM is not possible, check if SUZUKI scan tool is
communicable by connecting it to BCM in another vehicle. If communication is possible in this case, SUZUKI scan
tool is in good condition. Then check data link connector and serial data line (circuit) in the vehicle with which
communication was not possible.
5) After completing the check, turn ignition switch off and disconnect SUZUKI scan tool from data link connector.
Without Using SUZUKI Scan Tool
1) Turn ignition switch to OFF position.
2) Perform following Steps a) to d) within 10 seconds after ignition switch is turned ON and engine stops.
a) Turn headlight switch to “SMALL” position.
b) Turn headlight switch to “OFF” position.
c) Repeat Steps a) and b) 2 times.
d) Press and release driver side door switch 3 times.
(A)
I5RW0AA20008-02

Downloaded from www.Manualslib.com manuals search engine 10B-15 Body Electrical Control System:
3) Check DTC displayed on odometer of combination meter or read flashing pattern of theft deterrent light which
represents DTC as shown in the following example and write it down.
When more than 2 DTCs are stored in memory, flashing for each DTC starts with the smallest DTC number in
increasing order. Also, DTC is indicated repeatedly until the ignition switch is turned OFF.
4) After completing the check, turn ignition switch to OFF position.
DTC ClearanceS6RW0DA204006
After repair or replace of malfunction part(s), clear all DTCs by performing the following procedure.
Using SUZUKI Scan Tool
1) Connect SUZUKI scan tool to data link connector in the same manner as when making this connection for DTC
check.
2) Turn ignition switch ON and engine stops.
3) Erase DTC according to instructions displayed on scan tool. Refer to scan tool operator’s manual for further
details.
4) After completing the clearance, turn ignition switch off and disconnect scan tool from data link connector.
Without Using SUZUKI Scan Tool
1) Turn ignition switch to OFF position.
2) Perform following Steps a) to d) within 10 seconds after ignition switch is turned ON and engine stops.
a) Turn headlight switch to “SMALL” position.
b) Turn headlight switch to “OFF” position.
c) Repeat Steps a) and b) 3 times.
d) Press and release driver side door switch 4 times.
3) After completing above Steps, confirm that no malfunction DTC is detected.
B A [B] [A]
[C]
B A B A
3 113
3 113 T2
T1 T1 T1T1
1
2
T2T2
T2
T1 T1 T1T1T2T2
0
T2
0
T2
0
T2
0
T2
11 6 0
T1 T1 T1
T2 T3T2T2T2
I5RW0AA20009-01
[A]: No DTC (No. 0000) A: Indicator lamp turned ON T2: 1.0 seconds 2. Odometer
[B]: DTC B1133 (No. 1133) B: Indicator lamp turned OFF T3: 3.0 seconds
[C]: When 2 DTCs are detected T1: 0.3 seconds 1. Theft deterrent light

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-16
BCM Power Circuit and Ground Circuit CheckS6RW0DA204007
Wiring Diagram
Troubleshooting
+B
IG1
+BB
GRNG273-2BLKBLK/ORNG272-9
G271-3
BLK/ORNL314-4
BLU G273-5
WHTE324-22
3
1
E324 L314
1 2 4 53 6 7 8 9
10
11 12 13 14 15 16 17 181 21 2 4 53 61
2 4 53 6 7 8 9 10
7 8 9 10 11 12
11 12 13 14 15 16 17 18 19 20
G272 G271
1 2
4
65
G273[A] [A] [A]
3
[A]
I6RW0CA20006-02
[A]: Junction block connector viewed from harness side 2. Ignition switch
1. Junction block 3. Battery
Step Action Yes No
1Fuse check
1) Turn ignition switch to OFF position.
2) Check circuit fuses for condition.
Are circuit fuses in good condition?Go to Step 2. Replace fuse and check
for short circuit to
ground.
2Power supply circuit check
1) Disconnect connectors from junction block.
2) Check for proper connection to junction block connector
at terminal “E324-2”.
3) If OK, then measure voltage between “E324-2” terminal
of junction block connector and vehicle body ground.
Is voltage 10 – 14 V?Go to Step 3. Repair power supply
circuit.
3Power supply circuit check
1) Check for proper connection to junction block connector
at terminals “G273-2” and “G273-5”.
2) If OK, turn ignition switch to ON position.
3) Measure voltage between following terminals.
• Between “G273-2” terminal of junction block
connector and vehicle body ground
• Between “G273-5” terminal of junction block
connector and vehicle body ground
Is each voltage 10 – 14 V?Go to Step 4. Repair power supply
circuit.

Downloaded from www.Manualslib.com manuals search engine 10B-17 Body Electrical Control System:
DTC B1133 (DTC No. 1133): Battery Voltage Too HighS6RW0DA204008
Wiring Diagram
Refer to “BCM Power Circuit and Ground Circuit Check”.
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check charging system
DTC Troubleshooting4Ground circuit check
1) Turn ignition switch to OFF position.
2) Check for proper connection to junction block connector
at terminals “G271-3”, “G272-9” and “L314-4”.
3) If OK, then measure resistance between following
terminals.
• Between “G271-3” terminal of junction block
connector and vehicle body ground
• Between “G272-9” terminal of junction block
connector and vehicle body ground
• Between “L314-4” terminal of junction block connector
and vehicle body ground
Is each resistance 2
Ω or less?BCM power supply
circuit and ground circuit
are in good condition.Repair ground circuit. Step Action Yes No
DTC detecting condition Possible cause
Power voltage supplied from battery to BCM is
higher than 16V.• Charging system malfunction
• BCM malfunction
Step Action Yes No
1Charging system operation check
1) Check generator for operation referring to “Generator
Test (Overcharged Battery Check) in Section 1J”.
Is it in good condition?Substitute a known
good BCM (included in
junction block) and
recheck.Repair charging system.

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-18
DTC B1141 / DTC B1142 (No. 1141 / No. 1142) Outside Air Temperature (Ambient Temp.) Sensor
Circuit Malfunction
S6RW0DA204009
Wiring Diagram
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check whether malfunction is in outside air temperature sensor.
Step 2: Check outside air temperature sensor circuit.
DTC Troubleshooting
YEL/RED
YEL/BLK
5V
E04-10
E04-8
12E04
1 2 4 53 6 7
8 9 10 11 12 13 14
[A]
I6RW0CA20007-01
[A]: BCM connector viewed from harness side 2. BCM
1. Outside air temperature sensor
DTC detecting condition Possible cause
DTC B1141 (DTC No. 1141):
Input signal from outside air temperature sensor is higher
than 4.88 V.• Open in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
DTC B1142 (DTC No. 1142):
Input signal from outside air temperature sensor is lower
than 0.1 V.• Short in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
Step Action Yes No
1 Outside air temperature sensor check
1) Turn ignition switch to OFF position.
2) Disconnect connector from outside air temperature
sensor.
3) Check outside air temperature sensor for resistance
referring to “Outside Air Temperature Sensor Inspection
(If Equipped) in Section 9C”.
Is it in good condition?Go to Step 2. Replace outside air
temperature sensor.
2Outside air temperature sensor circuit check
1) Disconnect connector from BCM and check for proper
terminal connection to BCM connector.
2) If connections are OK, check outside air temperature
sensor circuit for open, short and high resistance.
Is each circuit in good condition?Substitute a known-
good BCM (included in
junction block) and
recheck.Repair circuit.