2008 SUZUKI SWIFT Release

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-32
BCM connector “E46”L01-8
“3” position switch
(A/T model) *0 – 1 V
↑↓
10 – 14 V Refer to “Reference waveform No. 2: ”
0 V Ignition switch is at ON positi
on and A/T select lever is at
“2” or “3” position
L01-9 — — —
L01-10 Driver side door lock actuator
control (Unlock) (if equipped) 10 – 14 V Unlock signal is output for driver side door lock actuator.
0 V Unlock signal is not output for driver side door lock
actuator.
L01-11 Rear end door opener
actuator control 0 V Rear end door opener actuator is not in operation
10 – 14 V Rear end door opener actuator is in operation
L01-12 Manual door lock switch
(Lock) 10 – 14 V
Manual door lock switch is at any position other than lock
position
0 V Manual door lock swit ch is at lock position
L01-13 — — —
L01-14 Driver side seat belt switch *0 – 3 V
↑↓
10 – 14 V Refer to “Reference waveform No. 3: ”
0 V Ignition switch is at ON position and driver side seat belt
is unfastened
L01-15 Door switch (other than driver
side door and rear end door) 10 – 14 V
Rear right and left side door and passenger side door are
closed
0 V Any one of the door is opened (except driver side door
and rear end door)
L01-16 Driver side door key cylinder switch (Lock) 10 – 14 V
Driver side door key cylinder switch is at any position
other than lock position
0 V Driver side door key cylinder switch is at lock position
L01-17 Driver side door key cylinder
switch (Unlock) 10 – 14 V
Driver side door key cylinder switch is at any position
other than unlock position
0 V Driver side door key cylinder switch is at unlock position
L01-18 — — —
Terminal Circuit Normal voltage Condition
Terminal
CircuitNormal voltage Condition
E46-1 CAN communication line
(high) for ABS/ESP
® control
module *2.5 – 3.6 V
Refer to “Reference waveform No. 4: ”
E46-2 CAN communication line
(low) for ABS/ESP
® control
module *1.6 – 2.5 V
E46-3 — — —
E46-4 Generator “L” terminal 10 – 14 V Engine is running
0 V Ignition switch is at ON position
E46-5 Brake fluid level switch *0 – 3 V
↑↓
10 – 14 V Refer to “Reference waveform No. 1: ”
0 V Ignition switch is at ON position, parking brake lever is
released and brake fluid level is lower than MIN level
E46-6 — — —
E46-7 — — —
E46-8 Sensor ground for outside air
temperature sensor
(if equipped) 0 V
—
E46-9 Serial communication line of
data link connector for ECM,
TCM, ABS and
P/S control
module 8 – 12 V Ignition switch is at ON position
E46-10 Outside air temperature
sensor (if equipped) About 1.5 VIgnition switch is at ON position and outside air
temperature approx. 20
°C (68 °F)

Downloaded from www.Manualslib.com manuals search engine 10B-35 Body Electrical Control System:
Junction block connector “L06”
Reference waveform No. 1
Parking brake or brake fluid level switch signal (1)Reference waveform No. 2
“3” position switch signal (1) for TCM
L05-6
Right side door mirror heater
(if equipped) 10 – 14 V
Engine is running and rear end door window defogger
is in operation
0 V Engine is running and rear end door window defogger
is not in operation
L05-7 Left side door mirror heater (if
equipped) 10 – 14 V
Engine is running and rear end door window defogger
is in operation
0 V Engine is running and rear end door window defogger
is not in operation
L05-8 Rear end door window
defogger wire 10 – 14 V
Engine is running and rear end door window defogger
is in operation
0 V Engine is running and rear end door window defogger
is not in operation
L05-9 Rear wiper control 10 – 14 V
Ignition switch is at ON posi
tion and rear wiper is not in
operation
0 V Ignition switch is at ON pos
ition and rear wiper is in
operation
Terminal Circuit Normal voltage Condition
Terminal
CircuitNormal voltage Condition
L06-9 Door lock actuator control
(Unlock) 10 – 14 V Unlock signal is outpu
t for rear door lock actuator
0 V Unlock signal is not output for rear door lock actuator
L06-10 Door lock actuator control
(Lock) 10 – 14 V Lock signal is output for all door lock actuators
0 V Lock signal is not output for all door lock actuators
Measurement terminal Parking brake switch
CH2: “L01-6” to “G33-3”
Brake fluid level switch
CH2: “E46-5” to “G33-3”
Oscilloscope setting CH2: 5 V / DIV
TIME: 10 ms / DIV
Measurement
condition Parking brake switch:
• Ignition switch is at ON
position, parking brake lever
is released
Brake fluid level switch
• Ignition switch is at ON position, brake fluid level is in
normal
I4RS0AA20018-02
Measurement terminal CH2: “L01-8” to “G33-3”
Oscilloscope setting CH2: 5 V/DIV
TIME: 4 ms/DIV
Measurement
condition Ignition switch is at ON position
and A/T selector lever is at any
position other than “2” or “3”
position
I4RS0AA20015-02

Downloaded from www.Manualslib.com manuals search engine 10E-2 Keyless Start System:
Parts and FunctionsS7RS0BA501002
PartsFunction
Keyless start control module • Activates each antenna
• Verifies ID code of remote controller
• Requests steering lock unit to release steering lock
• Requests BCM to lock or unlock doors
• Controls key indicator la
mp in combination meter
• Transmits its ID code to ECM
Remote controller • Receives request signal from each antenna
• Transmits ID code and request signal to keyless start control module
• Request keyless start control module to lock or unlock doors (keyless entry
system function)
Request switch • Requests keyless start control module to activate each antenna
Center antenna • Transmits request signal to remote controller
Luggage room antenna • Transmits request signal to remote controller
Driver side door antenna • Transmits request signal to remote controller
Passenger side door antenna • Transmits request signal to remote controller
Rear end door antenna • Transmits request signal to remote controller
Steering lock unit • Releases steering lock
Unlock button • Transmits door unlock request signal (keyless entry system function)
Lock button • Transmits door lock request signal (keyless entry system function)
BCM • Controls each door lock actuator
• Controls warning buzzer
• Lights hazard warning lamp and interior (DOME) light (answer back)
Key indicator lamp • Indicates operation state of keyless start system (indicates check result of
remote controller ID code)
ECM • Checks keyless start control module ID code
• Transmits its ID code to keyless start control module
• Starts engine

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-11
6) Read flashing pattern of key indicator lamp (1) which represents DTC as shown in example below and
write it down. When more than 2 DTCs are stored in
memory, flashing for each DTC is repeated three
times starting with the smallest DTC number in
increasing order.
NOTE
Go to “No DTC Detect ion After Performing
DTC Check” in case that any DTC is detected
after performing the procedure mentioned
above.

7) After completing the check, remove ignition key from ignition key cylinder.
DTC TableS7RS0BA504008
[A]: DTC NO. 12 (Normal)
a: 0.3 seconds
[B]: DTC NO. 52 b: 1.0 second
H: Key indicator lamp tu rned ONc: 3.0 seconds
L: Key indicator lamp turned OFF
bc
a
a
[A]
H
L
H
L [B]
52
bac
a
2
11baa 2
1
I4RS0BA50010-02
DTC (Flashing pattern
of key indicator lamp) Detected parts item Detecting condition
) 11 Communication Error With Steering
Lock Unit No communication is available between keyless
start control module and steering lock unit
12 — Normal (No malfunct ion DTC is detected)
) 13 Release Signal Error from Steering
Lock Unit Although lock release signal is output to steering
lock unit, it is not inputt
ed from steering lock unit
) 14 Steering Lock Unit Malfunction Steering lock unit cannot be unlocked due to its
temperature rise
) 21 Internal Error in Ke
yless Start Control
Module (EEPROM Reading Error) Data cannot be read from memory in keyless start
control module
) 22 Internal Error in Ke
yless Start Control
Module (EEPROM Writing Error) Data cannot be written into memory in keyless start
control module
) 31 Lost Communication With BCM Keyless start control module cannot receive data
sent by CAN from BCM
) 33 Control Module Communication Bus
Off No communication is available with all control
modules connected by CAN
) 51 Driver Side Door Request Switch
Malfunction Input signal from driver side door request switch
remains ON, unchanged
) 52 Passenger Side Door Request Switch
Malfunction Input signal from passenger side door request
switch remains ON, unchanged
) 53 Rear End Door Request Switch
Malfunction Input signal from rear end door request switch
remains ON, unchanged

Downloaded from www.Manualslib.com manuals search engine 10E-14 Keyless Start System:
Door Lock Operation (Keyless Start System)S7RS0BA504012
1) Check that all door locks are released and all doors are closed.
2) With remote controller of which ID code is registered in keyless start control m odule carried with yourself,
check that pushing driver door, passenger door or
rear end door request switch once locks all doors.
3) Check that pushing request switch of driver door, passenger door or rear end door once releases all
door locks.
Inspection of Keyless Start Control Module and Its CircuitsS7RS0BA504013
Keyless start control module and its circuits can be che cked at keyless start control module wiring couplers by
measuring voltage and resistance.
CAUTION!
Keyless start control module cannot be checked by itself. It is strictly prohibited to connect voltmeter
or ohmmeter to keyless start control module with coupler disconnected from it.

Voltage Check
1) Disconnect negative (–) cable at battery.
2) Remove keyless start control module from vehicle body referring to “Keyless Start Control Module Removal and
Installation”.
3) Connect connector to keyless start control module.
4) Check voltage at each terminal number of couplers connected.
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.

I4RS0BA50013-01
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[A]
I4RS0BA50014-02
[A]: Keyless start control module connector (viewed from harness side)

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-15
Terminal Number Circuit Normal
Vo l ta g e Condition
G42-1 Driver side door antenna (–) *0 – 5 V Refer to “Reference waveform No. 1: ”
G42-2 Driver side door antenna (+)
G42-3 Rear end door antenna (–) *0 – 5 V Refer to “Reference waveform No. 1: ”
G42-4 Rear end door antenna (+)
G42-5 Center antenna (–) *–2 – 2 V Refer to “Reference waveform No. 2: ”
G42-6 Center antenna (+) *–10 – 15 V
G42-7 Luggage room antenna (–) *–10 – 10 V Refer to “Reference waveform No. 3: ”
G42-8 Luggage room antenna (+) *–8 – 14 V
G42-9 Ground for keyless start control module 0 – 1 V Ignition switch is at all positions
G42-10 Power source 10 – 12 V Ignition switch is at all positions
G42-11 Ignition switch (ACC signal) 10 – 12 V Ignition switch is at ACC or ON position
0 – 1 V Ignition switch is at any position other than
ACC or ON position
G42-12 — — —
G42-13 — — —
G42-14 Ignition switch (Key reminder signal) 10 – 12 V Insert ignition key to ignition key cylinder
0 – 1 V Pull out ignition key from ignition key
cylinder
G42-15 Ignition switch (ON signal) 10 – 12 V Ignition switch is at ON position
0 – 1 V Ignition switch is at any position other than
ON position
G42-16 Driver side door request switch 10 – 12 V
Request switch of driver side door is
released
0 – 1 V Request switch of driver side door is
pushed
G42-17 — — —
G42-18 CAN communication line (low) *1.6 – 2.5 V Refer to “Reference waveform No. 4: ”
G42-19 CAN communication line (high) *2.5 – 3.6 V
G42-20 Power supply for steering lock unit 4 – 6 V Full time
G42-21 — — —
G42-22 — — —
G42-23 Passenger side door antenna (–) *0 – 5 V Refer to “Reference waveform No. 1: ”
G42-24 Passenger side door antenna (+)
G42-25 — — —
G42-26 — — —
G42-27 — — —
G42-28 — — —
G42-29 Signal for steering lock unit 4 – 6 VIgnition knob switch is at any position other
than ON and OFF position
*0 – 5 V Refer to “Reference waveform No. 5: ”
G42-30 Ground for steering lock unit 0 – 1 V Full time
G42-31 — — —
G42-32 Rear end door request switch 10 – 12 V Request switch of rear end door is released
0 – 1 V Request switch of rear end door is pushed
G42-33 Driver side door lock switch 0 – 1 V
Driver side door is at unlock position and
passenger side door is at lock position
4 – 6 V Driver and passenger side door is at lock
position
*3 – 5 V Refer to “Reference waveform No. 6: ”
G42-34 Ignition knob switch 10 – 12 V
When pushing ignition knob switch of
steering lock unit
0 – 1 V When releasing ignition knob switch of
steering lock unit
G42-35 — — —
G42-36 Passenger side door request switch 10 – 12 V
Request switch of passenger side door is
released
0 – 1 V Request switch of passenger side door is
pushed

Downloaded from www.Manualslib.com manuals search engine 10E-24 Keyless Start System:
DTC No. 13 / No. 14: Release Signal Error from Steering Lock Unit / Steering Lock Unit MalfunctionS7RS0BA504018
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Clear DTC referring to “DTC Clearance”.
2) Turn ignition knob switch pushing ignition knob switch.
3) Check DTC referring to “DTC Check”.
Troubleshooting
Replace steering lock unit and recheck.
NOTE
DTC No. 13 is also set is such case where the keyless start control module which was used in another
vehicle is installed, the remote controller ID code is registered in it but the ignition key transponder
code is not registered in ECM. Therefore, when DTC No. 13 is detected, register the ignition key
transponder code in ECM before replacing the steering lock unit.

DTC No. 21 / No. 22: Internal Error of Keyle ss Start Control Module (EEPROM reading error) /
(EEPROM writing error)
S7RS0BA504019
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC referring to “DTC Clearance”.
2) Turn ignition knob switch pushing ignition knob switch.
3) Push request switch of each door.
4) Check DTC referring to “DTC Check”.
Troubleshooting
Substitute a known-good keyless start control module and recheck. 3
Steering lock unit power supply voltage check
1) Connect connector to keyl ess start control module.
2) Measure voltage between “G22-3” terminal of steering lock unit connector and vehicle body ground.
Is voltage 4 – 6 V? Replace steering lock
unit.
Substitute a known-
good keyless start
control module and
recheck.
Step Action Yes No
DTC detecting condition
Trouble area
DTC No. 13:
Although lock release signal is ou tput to steering lock unit, no lock
release signal is inputted from steering lock unit.
(wire harness is normal)
DTC No. 14:
Although lock release signal is output to steering lock unit,
steering lock is not released due to temperature rise of steering
lock unit solenoid and no lock release signal is inputted.
(wire harness is normal) • Steering lock unit
DTC detecting condition Trouble area
DTC No. 21:
Data cannot be read from memory in keyless start control module.
DTC No. 22:
Data cannot be written into memory in keyless start control module.• Keyless start control module

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-31
Front Door (Driver and Passenger Side), Rear
End Door Request Switch Inspection
S7RS0BA506002
1) Remove door trim from door panel.For front door trim, refer to Step 1) to 3) of “Front
Door Glass Removal and Inst allation in Section 9E”.
For rear end door trim, refer to Step 1) of “Rear End
Door Lock Assembly Remo val and Installation in
Section 9F”.
2) Check for continuity between terminals “1” and “2” at each switch position as shown below. If check result
is not as specified, replace.
Request switch specification
ON position (request switch pushed): Continuity
OFF position (request switch released): No
continuity
Steering Lock Unit Removal and InstallationS7RS0BA506003
For removal and installation, refer to “Steering Lock
Assembly (Ignition Switch) Removal and Installation in
Section 6B”.
Steering Lock Unit InspectionS7RS0BA506004
Check key reminder switch and ignition knob switch in
steering lock unit for operation referring to “Ignition
Switch Inspection in Section 9C”.
Front Door Lock Switch InspectionS7RS0BA506005
1) Remove door trim from door panel referring to Step 1) to 3) of “Front Door Glass Removal and
Installation in Section 9E”.
2) Check for continuity between terminals “1” and “2” at each switch position as sh own below. If check result
is not as specified, replace.
Door lock switch specification
LOCK position: No continuity
UNLOCK position: Continuity
[A]: Front door request switch (driver and passenger side)
[B]: Rear end door request switch
[A]
1
2
[B]
1
2
I4RS0BA50028-02
[A]: Lock [C]: Right side door lock switch
[B]: Unlock [D]: Left side door lock switch
[C][D]
[A] [B]
1212
I4RS0BA50029-01