measure SUZUKI SWIFT 2007 2.G Service Workshop Manual

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
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[A]
I4RS0BA50014-02
[A]: Keyless start control module connector (viewed from harness side)

Downloaded from www.Manualslib.com manuals search engine 10E-16 Keyless Start System:
Reference waveform No. 1
Driver, passenger and rear end door antenna request
signals (Request signal (1) transmitted by each door
antenna when each door request switch is pushed)Reference waveform No. 2
Center antenna signal
(Request signal (1) transmitted by center antenna when
each door request switch is pushed)
G42-37 Passenger side door lock switch
0 – 1 V
Passenger side door is at unlock position
and driver 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: ”
G42-38 — — —
G42-39 — — —
G42-40 — — —
Terminal
Number Circuit Normal
Vo l ta g e Condition
Measurement
terminalDriver side door antenna
• CH1: “G42-2” to “G42-9”
• CH2: “G42-1” to “G42-9”
Passenger side door antenna
• CH1: “G42-24” to “G42-9”
• CH2: “G42-23” to “G42-9”
Rear end door antenna
• CH1: “G42-4” to “G42-9”
• CH2: “G42-3” to “G42-9”
Oscilloscope setting CH1: 5 V/DIV, CH2: 5V/DIV
TIME: 40 ms/DIV
Measurement
condition Request switch of each door is
pushed with remote controller
carried
I4RS0BA50015-02
Measurement
terminal
CH1: “G42-6” to “G42-9”
CH2: “G42-5” to “G42-9”
Oscilloscope setting CH1: 5 V/DIV, CH2: 2 V/DIV
TIME: 20 ms/DIV
Measurement
condition • Ignition knob switch of steering
lock unit is pushed
• Any one of door is opened
• Request switch of each door is pushed
I4RS0BA50016-02

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-17
Reference waveform No. 3
Luggage room antenna signal
(Request signal (1) transmitted by luggage room
antenna when each door request switch is pushed)
Reference waveform No. 4
CAN communication signals
(CAN signal communicated to each control module
when ignition switch is turned ON)Reference waveform No. 5
Steering lock unit signal
(Signal (1) communicated between keyless start control
module and steering lock unit when measurement
condition described below applies)
Measurement
terminal CH1: “G42-8” to “G42-9”
CH2: “G42-7” to “G42-9”
Oscilloscope setting CH1: 10 V/DIV, CH2: 10 V/DIV
TIME: 20 ms/DIV
Measurement
condition • Any one of door is opened
• Request switch of each door is
pushed
Measurement
terminal CH1: “G42-19” to “G42-9”
CH2: “G42-18” to “G42-9”
Oscilloscope setting CH1: 1 V/DIV, CH2: 1V/DIV
TIME: 40
µs/DIV
Measurement
condition Ignition switch is at ON position
1. CAN communication line signal (high)
2. CAN communication line signal (low)
I4RS0BA50017-02
I5RS0DA50002-01
Measurement
terminal
CH1: “G42-29” to “G42-9”
Oscilloscope setting CH1: 2 V/DIV
TIME: 4 ms/DIV
Measurement
condition • Ignition knob switch of steering
lock unit is pushed
• Any one of door is opened
• Request switch of each door is pushed
I4RS0BA50019-02

Downloaded from www.Manualslib.com manuals search engine 10E-18 Keyless Start System:
Reference waveform No. 6
Driver side and passenger side door lock switch signals
(Signal (1) indicating door lock switch status which
keyless start control module receives from BCM)
No DTC Detection After Performing DTC CheckS7RS0BA504014
Wiring Diagram
Description
The keyless start control module detect s DTC by using signals from the key reminder and driver side door request
switches. The keyless start control module makes the key indicator lamp in the combination meter flash on and off by
using CAN communication. Measurement
terminal
Driver side door lock switch
• CH1: “G42-33” to “G42-9”
Passenger side door lock switch
• CH1: “G42-37” to “G42-9”
Oscilloscope setting CH1: 1 V/DIV
TIME: 4 ms/DIV
Measurement
condition Driver side door lock switch
• Driver side door is at lock
position
• Passenger side door is at unlock position
Passenger side door lock switch
• Driver side door is at unlock position
• Passenger side door is at lock position
I4RS0BA50020-02
BLK/ORNG42-9
G42-15
G42-14
G42-16
G42-20G42-29G42-30
G42-10
G42-34
G42-11BLU/WHT
WHT/RED
WHT/RED
WHT/RED
PPL
RED/BLK
5V5V
5V5V
5V
12V
12VWHTREDWHTREDG42-18G42-19G28-9G28-7
BLU/YEL
ORN
BLK/YELBRN/YELBRNG22-3
G22-1
G22-2G22-5
G22-4
G22-6
G22-7G22-8
WHT/RED
WHT/RED
G28-32
6
7
8 1
2
4 5 3
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[A]
I4RS0BA50035-01
[A]: Keyless start control module connector (viewed from harne
ss side) 3. Steering lock solenoid 6. Driver side door request switch
1. Keyless start control module 4. Ignition knob switch 7. Combination meter
2. Steering lock unit 5. Key reminder switch 8. Key indicator lamp

Downloaded from www.Manualslib.com manuals search engine 10E-22 Keyless Start System:
Keyless Start Control Module Power and Ground Circuit CheckS7RS0BA504016
Wiring Diagram
Troubleshooting
BLK/ORNG42-9
G42-15
G42-10
G42-11BLU/WHT
WHT/RED
RED/BLK
5V
12V
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[A]
4 2
3 1
I4RS0BA50022-01
[A]: Keyless start control module connector (viewed from harness side)
3. Circuit fuse
1. Keyless start control module 4. Main fuse
2. Ignition switch
Step Action YesNo
1 Fuse check
1) Turn ignition switch to OFF position.
2) Check circuit fuse and main fuse for condition.
Are fuses in good condition? Go to Step 2.
Replace fuse(s) and
check for short.
2 Power supply circuit check
1) Disconnect connector from keyless start control module.
2) Check for proper connection to “G42-10”, “G42-11” and
“G42-15” terminals of keyless start control module
connector.
3) If OK, measure voltage between the following terminals. • When ignition switch is at OFF positionBetween “G42-10” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
• When ignition switch is at ACC position Between “G42-11” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
• When ignition switch is at ON position Between “G42-15” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
Is check result satisfactory? Go to Step 3.
Repair power supply
circuit.
3 Ground circuit check
1) Check for proper connection to “G42-9” terminal of
keyless start control module connector.
2) If OK, measure resistance between “G42-9” terminal of keyless start control module connector and vehicle body
ground.
Is resistance 1
Ω or less? Power and ground
circuit is in good
condition.
Repair ground circuit.

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-29
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Clear DTC referring to “DTC Clearance”.
2) Push request switch of each door.
3) Check DTC referring to “DTC Check”.
Troubleshooting DTC detecting condition Trouble area
DTC No. 51:
Input signal from driver side door request switch remains
ON, unchanged for 10 minutes or longer.
DTC No. 52:
Input signal from passenger side door request switch
remains ON, unchanged for 10 minutes or longer.
DTC No. 53:
Input signal from rear end door request switch remains
ON, unchanged for 10 minutes or longer. • Driver side door request switch and its circuit
• Passenger side door request switch and its circuit
• Rear end door request switch and its circuit
• Keyless start control module
Step
Action YesNo
1 Was “Keyless Start System Check” performed? Go to Step 2.Go to “Keyless Start
System Check”.
2 Keyless start control module voltage check
1) Turn ignition switch to OFF position.
2) Disconnect connector from each door request switch.
3) Check for proper connection to all terminals of each door
request switch connector.
4) If OK, measure voltage between “PPL”, “BLU/RED” or “YEL” terminal of related door request switch connector
and vehicle body ground.
Is voltage 10 – 14 V? Go to Step 3.
Go to Step 4.
3 Request switch check
1) Check related door request switch for function referring
to “Front Door (Driver and Passenger Side), Rear End
Door Request Switch Inspection”.
Is each switch in good condition? Substitute a known-
good keyless start
control module and
recheck.
Replace request switch.
4 Wire harness check
1) Turn ignition switch to OFF position.
2) Check for open, short and high resistance in related
circuit.
• Between “PPL” wire terminal of driver side door request switch connector and “G42-16” terminal of
keyless start control module connector
• Between “BLU/RED” wire terminal of passenger side door request switch connector and “G42-36” terminal
of keyless start control module connector
• Between “YEL” wire terminal of rear end door request switch connector and “G42-32” terminal of keyless
start control module connector
Is it in good condition? Substitute a known-
good keyless start
control module and
recheck.
Repair circuit.