2005 SUZUKI SWIFT Horn relay

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-70
B-7 Horn Circuit DiagramS7RS0B910E016
BCM
14A
83+B 7
IG
33
Flasher relay
10A METER
J/B
25
GRNBLU
11
Combination
switch
(Horn)
H
9
A
A
BLK
J/C
1 2
4
3Relay
H
E15
G27 G15
E41
G34
9
A
11
BLKBLK
J/B side connector (BCM)AI5RS0C910970-02

Downloaded from www.Manualslib.com manuals search engine 9C-5 Instrumentation / Driver Info. / Horn:
Terminal arrangement of coupler viewed from terminal side
NOTE
Molded numbers (1) have no relation to the terminal numbers.

TerminalCircuitTerminal Circuit
G28-1 To turn signal and hazard warning relay (turn R) G28-17
—
G28-2 —G28-18 —
G28-3 —G28-19 —
G28-4 —G28-20 —
G28-5 To SDM (air bag warning light control signal) G28-21 —
G28-6 —G28-22 To lighting switch (high beam)
G28-7 CAN communication line (Active High signal) G28-23 —
G28-8 CAN communication line (Active High signal) G28-24 —
G28-9 CAN communication line (Active Low signal) G 28-25 To P/S control module (EPS warning light
control signal)
G28-10 CAN communication line (Active Low signal) G28-26 To turn signal and hazard warning relay (turn L)
G28-11 —G28-27 —
G28-12 —G28-28 —
G28-13 —G28-29 Fuel level sensor ground
G28-14 —G28-30 To fuel level sensor
G28-15 —G28-31 To METER fuse
G28-16 GND G28-32 To RADIO fuse
G28-1 G28-16
G28-32
G28-17
1 1I4RS0A930003-02

Downloaded from www.Manualslib.com manuals search engine Instrumentation / Driver Info. / Horn: 9C-10
Warning Buzzer Circuit Symptom DiagnosisS7RS0B9304012
NOTE
• Use of SUZUKI scan tool makes it easy to check wh ether a faulty condition is on the input side or
output side of BCM. For checking procedure, re fer 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.

Cigarette Lighter Symptom Diagnosis (If Equipped)S7RS0B9304013
Horn Symptom DiagnosisS7RS0B9304014
Condition Possible cause Correction / Reference Item
Warning buzzer shows no
sounding Circuit fuse blown
Replace fuse and check for short circuit.
Driver side door switch faulty Check driver side door switch referring to
“Door Switch (Front / Rear Door) Inspection”.
Lighting switch faulty Check lighting switch referring to “Headlight
Switch (in Lighting Switch) Inspection in
Section 9B”.
Key reminder switch faulty Check key reminder switch referring to
“Ignition Switch Inspection”.
Seat belt switch faulty (if equipped) Check seat belt switch referring to “Front Seat
Belt Inspection in Section 8A”.
Wiring and/or grounding faulty Repair as necessary.
BCM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Cigarette lighter shows
no operation Circuit fuse blown
Replace fuse and check for short circuit.
Cigarette lighter faulty Check cigarette lighter.
Ignition switch faulty Check ignition switch referring to “Ignition
Switch Inspection”.
Wiring and/or grounding faulty Repair as necessary.
ConditionPossible cause Correction / Reference Item
Horn does not operate Circuit fuse blown Replace fuse and check for short circuit.
Horn switch faulty Check horn switch.
Horn relay faulty Check horn relay referring to “Horn Relay
Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Horn faulty Check horn referring to “Horn Inspection”.

Downloaded from www.Manualslib.com manuals search engine Instrumentation / Driver Info. / Horn: 9C-20
Rear Speaker Removal and InstallationS7RS0B9306019
Removal
1) Remove rear door trim referring to Step 1) to 3) of “Rear Door Glass Removal and Installation in
Section 9E”.
2) Remove 3 rear speaker mounting screws (1).
3) Remove rear speaker (2) from rear door panel (3).
4) Disconnect rear speaker coupler from rear speaker (2).
Installation
Reverse removal procedure.
Horn Removal and InstallationS7RS0B9306020
Removal 1) Disconnect negative (–) cable at battery.
2) Remove front bumper referring to “Front Bumper and Rear Bumper Components in Section 9K”.
3) Disconnect horn connector (1).
4) Remove horn (2).
Installation
Reverse removal procedure.
Horn InspectionS7RS0B9306021
1) Disconnect negative (–) cable at battery.
2) Remove front bumper referring to “Front Bumper and Rear Bumper Components in Section 9K”.
3) Disconnect horn connector (1).
4) Connect battery positive (+) terminal to horn
connector (2) and negative (–) terminal to body
ground.
If horn is not sounding, replace horn.
Horn Relay InspectionS7RS0B9306022
1) Disconnect negative (–) cable at battery.
2) Remove junction block assembly referring to “BCM (Included in Junction Bl ock Assembly) Removal and
Installation in Section 10B”.
3) Remove horn relay (1) from junction block assembly (2).
4) Check that there is no continuity between terminal “c” and “d”. If there is continuity, replace relay.
5) Check that there is continuity between terminals “c” and “d” when a 12 V battery is connected to
terminals “a” and “b”. If malfunction is found, replace
it with a new one.
1
2
3
I4RS0A930027-01
12I4RS0A930028-01
1 2I4RS0A930030-01
1
2
I4RS0B930018-01
ba
c
d c
a
d
bI3JA01920006-01

Downloaded from www.Manualslib.com manuals search engine 10B-3 Body Electrical Control System:
Theft Deterrent LightS7RS0BA201003
The information display or clock (1) of this vehicle includes a theft deterrent light (2) for the theft preventive purpose.
The BCM makes the theft deterrent light flash at certain interval s after the ignition switch is turned off until it is turned
on again. Also, to check DTCs stored in BCM without usin g a SUZUKI scan tool when diagnosing troubles, it is
possible to identify them by flashing patterns of the theft deterrent light.
Security Alarm Description (If Equipped)S7RS0BA201004
Operation
The security alarm system provides a warning of an abnormal condition to those who are around. Its operation is as
follows. While the system is in the stand- by mode (when 20 seconds or more elapsed after the door is locked using a
keyless entry transmitter or door request switch), BCM monitors door lock status, door switch status and battery power
supply voltage. When it detects an abnormal condition (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), it activates the
warning buzzer (located in BCM), theft deterr ent light, hazard warning relay and horn relay.
The security alarm system has 2 selectable modes.
• A mode: No operation
• B mode: Theft deterrent light blinks, hazard warning lights blink, warning buzzer (located in BCM) sounds and horn
sounds
When B mode is selected and the door is locked using keyl ess entry transmitter or door request switch, the theft
deterrent light (1) flashes at 0.1 second interval for 20 seconds and the se curity alarm system is set to the stand-by
mode (2). Once it is se t 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)”.
1 2I4RS0AA20031-01
B A1T3
T1
T2 2
C
I5RS0DA20003-01
A: Indicator lamp turned ON
T1: 0.1 seconds
B: Indicator lamp turned OFF T2: 20 seconds
C: When door is locked using keyless entry tr ansmitter or door request switch T3: 2 seconds

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-4
Input / Output Table
Schematic and Routing Diagram
Body Electrical Control System Wiring Circuit DiagramS7RS0BA202001
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.

Input Output
Keyless entry transmitter
Door switch status
Door lock status BCMHorn 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 Body Electrical Control System: 10B-6
[A]: Vehicle not equipped with diagnosis connector 19. Door key cylinder switch (included in door lock actuator)40. SDM
[B]: Vehicle equipped with diagnosis conn ector 20. Manual door lock switch 41. Rear end door window defogger relay
[C]: ESP ® model 21. Rear end door window defogger switch 42. Rear end door window defogger
1. BCM (included in junction block assembly) 22. Rear end door opener switch 43. Rear end door window defogger indicator lamp
2. Rear washer motor 23. “3” position switch (A/T model)44. Horn relay
3. Rear wiper motor 24. A/C switch45. Horn switch
4. Rear wiper relay 25. Rear end door opener relay46. Horn
5. Rear wiper and washer switch 26. Rear end door opener actuator47. Lighting switch
6. Outside air temperature sensor 27. TCM (A/T model)48. Ignition switch
7. Key reminder switch 28. ECM49. Battery
8. Theft deterrent light 29. Combination meter50. To turn signal light
9. Oil pressure switch 30. Data link connector (DLC)51. Body ground
10. Generator 31. To ECM, ABS/ESP®, P/S control module 52. Engine ground
11. Information display (if equipped) 32. To SDM53. Keyless start control module (if equipped)
12. Keyless entry receiver (if equipped) 33. Door lock actuator relay 54. Right side door mirror heater (if equipped)
13. Driver side door switch 34. Driver side door lock actuator55. Left side door mirror heater (if equipped)
14. Other than driver side door switch 35. Passenger side door lock actuator56. ABS/ESP® control module
15. Rear end door switch 36. Rear door lock actuator57. To HVAC control module
16. Driver side seat belt switch 37. Turn signal and hazard warning relay 58. CAN junction connector
17. Brake fluid level switch 38. Hazard warning switch59. Steering angle sensor
18. Parking brake switch 39. Interior light

Downloaded from www.Manualslib.com manuals search engine 10B-7 Body Electrical Control System:
Connector Layout Diagram of BCM and Junction Block AssemblyS7RS0BA202002
BCM and junction block assembly connectors (viewed from harness side)
I4RS0AA20004-01
[A]: Junction block assembly (viewed from BCM side)2. Junction block assembly5. Rear wiper relay
[B]: Junction block assembly (viewed from relay side) 3.Heater relay 6. Rear end door window defogger relay
1. BCM 4. Horn relay7. Turn signal and hazard warning relay