2006 SUZUKI SX4 keyless

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-15
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.

1 2 3 4 5 6 7 8 9 10 11 14 15 16
36 34 33 32 31 30 29 24 23 37 18 19 20
[A]
I5RW0AA50008-03
[A]: Keyless start control module connector (viewed from harness side)
Terminal
NumberCircuitNormal
Vo l ta g eCondition
G16-1 Driver side door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-2 Driver side door antenna (+)
G16-3 Rear end door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-4 Rear end door antenna (+)
G16-5 Center antenna (–) *–2 – 2 V
Refer to “Reference waveform No. 2: ”
G16-6 Center antenna (+) *–10 – 15 V
G16-7 Luggage room antenna (–) *–10 – 10 V
Refer to “Reference waveform No. 3: ”
G16-8 Luggage room antenna (+) *–8 – 14 V
G16-9 Ground for keyless start control module 0 – 1 V Ignition switch is at all positions
G16-10 Power source 10 – 12 V Ignition switch is at all positions
G16-11 Ignition switch (ACC signal)10 – 12 V Ignition switch is at ACC or ON position
0 – 1 VIgnition switch is at any position other than
ACC or ON position
G16-12 — — —
G16-13 — — —
G16-14 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
G16-15 Ignition switch (ON signal)10 – 12 V Ignition switch is at ON position
0 – 1 VIgnition switch is at any position other than ON
position
G16-16 Driver side door request switch10 – 12 V Request switch of driver side door is released
0 – 1 V Request switch of driver side door is pushed
G16-17 — — —

Downloaded from www.Manualslib.com manuals search engine 10E-16 Keyless Start System:
G16-18 CAN communication line (low) *1.6 – 2.5 V
Refer to “Reference waveform No. 4: ”
G16-19 CAN communication line (high) *2.5 – 3.6 V
G16-20 Power supply for steering lock unit 4 – 6 V Full time
G16-21 — — —
G16-22 — — —
G16-23 Passenger side door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-24 Passenger side door antenna (+)
G16-25 — — —
G16-26 — — —
G16-27 — — —
G16-28 — — —
G16-29 Signal for steering lock unit4 – 6 VIgnition knob switch is at any position other
than ON and OFF position
*0 – 5 V Refer to “Reference waveform No. 5: ”
G16-30 Ground for steering lock unit 0 – 1 V Full time
G16-31 — — —
G16-32 Rear end door request switch10 – 12 V Request switch of rear end door is released
0 – 1 V Request switch of rear end door is pushed
G16-33 Driver side door lock switch0 – 1 VDriver side door is at unlock position and
passenger side door is at lock position
4 – 6 VDriver and passenger side door is at lock
position
*3 – 5 V Refer to “Reference waveform No. 6: ”
G16-34 Ignition knob switch10 – 12 VWhen pushing ignition knob switch of steering
lock unit
0 – 1 VWhen releasing ignition knob switch of
steering lock unit
G16-35 — — —
G16-36 Passenger side door request switch10 – 12 VRequest switch of passenger side door is
released
0 – 1 VRequest switch of passenger side door is
pushed
G16-37 Passenger side door lock switch0 – 1 VPassenger side door is at unlock position and
driver side door is at lock position
4 – 6 VDriver and passenger side door is at lock
position
*3 – 5 V Refer to “Reference waveform No. 6: ”
G16-38 — — —
G16-39 — — —
G16-40 — — — Terminal
NumberCircuitNormal
Vo l ta g eCondition

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-17
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)
Reference waveform No. 3
Luggage room antenna signal
(Request signal (1) transmitted by luggage room
antenna when each door request switch is pushed) Measurement
terminalDriver side door antenna
• CH1: “G16-2” to “G16-9”
• CH2: “G16-1” to “G16-9”
Passenger side door antenna
• CH1: “G16-24” to “G16-9”
• CH2: “G16-23” to “G16-9”
Rear end door antenna
• CH1: “G16-4” to “G16-9”
• CH2: “G16-3” to “G16-9”
Oscilloscope setting CH1: 5 V/DIV, CH2: 5V/DIV
TIME: 40 ms/DIV
Measurement
conditionRequest switch of each door is
pushed with remote controller
carried
I4RS0BA50015-02
Measurement
terminalCH1: “G16-6” to “G16-9”
CH2: “G16-5” to “G16-9”
Oscilloscope setting CH1: 10 V/DIV, CH2: 2 V/DIV
TIME: 20 ms/DIV
Measurement
condition• Ignition knob switch of steering
lock unit is pushed
• Request switch of each door is
pushed with remote controller
carried
Measurement
terminalCH1: “G16-8” to “G16-9”
CH2: “G16-7” to “G16-9”
Oscilloscope setting CH1: 10 V/DIV, CH2: 10 V/DIV
TIME: 20 ms/DIV
Measurement
condition• Request switch of each door is
pushed with remote controller
carried
I5JB0AA50024-03
I5JB0AA50025-02

Downloaded from www.Manualslib.com manuals search engine 10E-18 Keyless Start System:
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)Reference waveform No. 6
Driver and passenger side door lock switch signals.
(This signal indicates door lock status.)
In case the position of driver and passenger side door
lock is changed from the unlock to the lock.
Measurement
terminalCH1: “G16-19” to “G16-9”
CH2: “G16-18” to “G16-9”
Oscilloscope setting CH1: 1 V/DIV, CH2: 1V/DIV
TIME: 40 µs/DIV
Measurement
conditionIgnition switch is at ON position
1. CAN communication line signal (high)
2. CAN communication line signal (low)
Measurement
terminalCH1: “G16-29” to “G16-9”
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
I5RS0DA50002-01
I4RS0BA50019-02
Measurement
terminalDriver side door lock switch
• CH1: “G16-33” to “G16-9”
Passenger side door lock switch
• CH2: “G16-37” to “G16-9”
Oscilloscope setting CH1: 2 V/DIV CH2: 2 V/DIV
TIME: 1 s/DIV
Measurement
conditionPress lock side of manual door
lock switch
1. Unlock signal 2. Lock signal
I5JB0AA50027-02

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-19
In case the position of passenger side door lock is
changed from the lock to the unlock when the position of
driver and passenger side door is at the lock
In case the position of driver side door lock is changed
from the lock to the unlock when the position of driver
and passenger side door is at the lock.In case the position of driver and passenger side door
lock is changed from the lock to the unlock. Measurement
terminalDriver side door lock switch
• CH1: “G16-33” to “G16-9”
Passenger side door lock switch
• CH2: “G16-37” to “G16-9”
Oscilloscope setting CH1: 2 V/DIV CH2: 2 V/DIV
TIME: 400 ms/DIV
Measurement
conditionDriver door is at lock position and
passenger side door is at unlock
position
1. Lock signal 2. Unlock signal
Measurement
terminalDriver side door lock switch
• CH1: “G16-33” to “G16-9”
Passenger side door lock switch
• CH2: “G16-37” to “G16-9”
Oscilloscope setting CH1: 2 V/DIV CH2: 2 V/DIV
TIME: 400 ms/DIV
Measurement
conditionDriver door is at unlock position
and passenger side door is at
lock position
I5JB0AA50028-02
1. Lock signal 2. Unlock signal
Measurement
terminalDriver side door lock switch
• CH1: “G16-33” to “G16-9”
Passenger side door lock switch
• CH2: “G16-37” to “G16-9”
Oscilloscope setting CH1: 2 V/DIV CH2: 2 V/DIV
TIME: 400 ms/DIV
Measurement
conditionDriver door is at unlock position
and passenger side door is at
lock position
1. Lock signal 2. Unlock signal
I5JB0AA50029-02
I5JB0AA50030-03

Downloaded from www.Manualslib.com manuals search engine 10E-20 Keyless Start System:
No DTC Detection After Performing DTC CheckS6RW0DA504014
Wiring Diagram
Description
The keyless start control module detects DTC by using signals from the key reminder and driver side door request
switches. The keyless start control module makes the key indicator light in the combination meter flash on and off by
using CAN communication.
Troubleshooting
BLK/ORNG16-9
G16-15
G16-14
G16-16
G16-20G16-29G16-30
G16-10
G16-34
G16-11BLU/WHT
WHT/RED
WHT/RED
WHT/RED
PPL
RED/BLK
5V5V 5V5V
5V12V
12VWHTREDWHTREDG16-18G16-19G241-10G241-7
BLU/YEL
ORN
BLK/YELBRN/YELBRNG146-3
G146-1
G146-2G146-5
G146-4
G146-6
G146-7G146-8
WHT/RED
WHT/RED
G241-32
6 7
81
2
4 53
20 12 3 4 5 6 7 8 9 10 11 14 15 16
36 34 33 32 30 29 24 23 37 18 19
[A]
9
G16
I7RW01A50004-02
[A]: Keyless start control module connector (viewed from harness side) 4. Ignition knob switch 8. Key indicator light
1. Keyless start control module 5. Key reminder switch 9. CAN junction connector
2. Steering lock unit 6. Driver side door request switch
3. Steering lock solenoid 7. Combination meter
Step Action Yes No
1Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lights in combination meter other than key
indicator light light up?Go to Step 2. Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
2Driver side door request switch and its circuit check
1) Check driver side door request switch and its circuit
referring to “DTC No. 51 / No. 52 / No. 53: Driver Side /
Passenger Side / Rear End Door Request Switch
Failure”.
Is it in good condition?Go to Step 3. Repair or replace
malfunction part.
3Key reminder switch and its circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connector from ignition switch.
3) Check key reminder switch for operation referring to
“Ignition Switch Inspection in Section 9C”.
4) If OK, check for open, short and high resistance in key
reminder switch circuit.
Is it in good condition?Go to Step 4. Repair or replace
malfunction part.

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-21
Key Indicator Light Circuit Check (Key Indicator Light Doesn’t Light when Ignition Knob Switch is
Pushed)
S6RW0DA504015
Wiring Diagram4Keyless start control module power and ground circuit
check
1) Check keyless start control module power and ground
circuit for condition referring to “Keyless Start Control
Module Power and Ground Circuit Check”.
Is it in good condition?Go to Step 5. Repair circuit.
5CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control
modules for open, short and high resistance.
Is each CAN communication circuit in good condition?Substitute a known-
good keyless start
control module and
recheck.Repair circuit. Step Action Yes No
5V5V 5V5V5V 12V
1 2 3 4 5 6 7 8 9 10 11 14 15 16
36 34 33 32 30 29 24 23 37 18 19 20
12
4
5
7 6
[A]8
3
G16
9
WHT/RED
WHTREDG16-18G16-19WHTREDG241-10G241-7
WHT/REDG241-32
WHT/REDG146-6
G146-3G146-7G146-8
G146-1
G146-2G146-5
G146-4WHT/RED
WHT/RED
G16-20G16-29G16-30BLK/YELBRN/YELBRN
G16-14
G16-34
BLU/YEL
ORN
BLK/ORNG16-9
G16-15
G16-10
G16-11BLU/WHT
WHT/RED
RED/BLK
I7RW01A50005-01
[A]: Keyless start control module connector (viewed from harness side) 5. Steering lock solenoid
1. Keyless start control module 6. Key reminder switch
2. Combination meter 7. Ignition knob switch
3. Key indicator light 8. CAN junction connector
4. Steering lock unit 9. Ignition knob switch signal circuit

Downloaded from www.Manualslib.com manuals search engine 10E-22 Keyless Start System:
Description
When the ignition knob switch is pushed, the key indicator light lights up in blue if you carry the remote controller
registered in the keyless start control module and it lights in red if you carry the remote controller which has not been
registered in the keyless start control module or if you carry no remote controller.
Troubleshooting
Step Action Yes No
1Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lights in combination meter other than key
indicator light light up?Go to Step 2. Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
2Keyless start control module power and ground circuit
check
1) Check keyless start control module power and ground
circuit for condition referring to “Keyless Start Control
Module Power and Ground Circuit Check”.
Is it in good condition?Go to Step 3. Repair circuit.
3Steering lock unit ignition knob switch check
1) Check ignition knob switch of steering lock unit for
operation referring to “Steering Lock Unit Inspection”.
Is it in good condition?Go to Step 4. Replace steering lock
unit.
4Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from keyless start control
module, steering lock unit and combination meter.
3) Check for open, short and high resistance in following
circuits.
• Ignition knob switch signal circuit
• Keyless start control module and combination meter
CAN communication circuit
Is each circuit in good condition?Go to Step 5. Repair circuit.
5Keyless start system operation check
1) With remote controller of which ID code is registered in
keyless start control module carried with you, try to turn
ignition knob switch.
Can it be turned to any position other than “LOCK” position?Replace combination
meter.Substitute a known-
good keyless start
control module and
recheck.