2006 SUZUKI SX4 Key

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.

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-23
Keyless Start Control Module Power and Ground Circuit CheckS6RW0DA504016
Wiring Diagram
Troubleshooting
BLK/ORNG16-9
G16-15
G16-10
G16-11BLU/WHT
WHT/RED
RED/BLK
5V 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
[A] 423
31
G16 5
86
7
3
I7RW01A50006-02
[A]: Keyless start control module connector (viewed from harness side) 3. Circuit fuse 6. ACC signal circuit
1. Keyless start control module 4. Main fuse 7. IG ON signal circuit
2. Ignition switch 5. Power source circuit 8. Ground circuit
Step Action Yes No
1Fuse 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.
2Power supply circuit check
1) Disconnect connector from keyless start control module.
2) Check for proper connection to “Power source”, “ACC
signal” and “IG ON signal” terminal of keyless start
control module connector.
3) If OK, measure voltage between following terminals.
• “Power source” terminal of keyless start control
module connector and vehicle body ground with
ignition switch is at OFF position
• “ACC signal” terminal of keyless start control module
connector and vehicle body ground with ignition
switch is at ACC position
• “IG ON signal” terminal of keyless start control module
connector and vehicle body ground with ignition
switch is at ON position
Is each terminal voltage is 10 – 14 V?Go to Step 3. Repair defective power
supply circuit.
3Ground circuit check
1) Check for proper connection to “Ground” terminal of
keyless start control module connector.
2) If OK, measure resistance between “Ground” 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. 11: Communication Error with Steering Lock UnitS6RW0DA504017
Wiring Diagram
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) Check DTC referring to “DTC Check”.
DTC Troubleshooting
5V
G16-20
G16-29
G16-30
G146-3
G146-7
G146-8
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
5V
5V
BRN
BRN/YEL
BLK/YEL
5V
21
[A]
G16
3
4
5
I7RW01A50007-02
[A]: Keyless start control module connector (viewed from harness side) 3. Steering lock unit power supply circuit
1. Keyless start control module 4. Steering lock unit signal circuit
2. Steering lock unit 5. Steering lock unit ground circuit
DTC detecting condition Trouble area
No communication is available between keyless start
control module and steering lock unit.• Steering lock unit and its circuit
• Keyless start control module
Step Action Yes No
1Was “Keyless Start System Check” performed?Go to Step 2. Go to “Keyless Start
System Check”.
2Steering lock unit circuit check
1) Disconnect connector from keyless start control module.
2) Check for proper connection to “Steering lock unit power
supply”, “Steering lock unit signal” and “Steering lock unit
ground” terminals of keyless start control module
connector.
3) If OK, check for open, short and high resistance in
following circuits.
• Steering lock unit power supply circuit
• Steering lock unit signal circuit
• Steering lock unit ground circuit
Is each circuit in good condition?Go to Step 3. Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-25
DTC No. 13 / No. 14: Release Signal Error from Steering Lock Unit / Steering Lock Unit MalfunctionS6RW0DA504018
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) Check DTC referring to “DTC Check”.
DTC Troubleshooting
Replace steering lock unit and recheck.
NOTE
Be sure to register the following code when a used keyless start control module is installed. Otherwise
DTC No.13 is detected by keyless start control module though steering lock unit is normal.
• With immobilizer control system, ignition key transponder code is not registered in ECM.
• Without immobilizer control system, steering lock unit ID code is not registered in keyless start
control module.

DTC No. 21 / No. 22: Internal Error of Keyless Start Control Module (EEPROM Reading Error) /
(EEPROM Writing Error)
S6RW0DA504019
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”.
DTC Troubleshooting
Substitute a known-good keyless start control module and recheck.3Steering lock unit power supply voltage check
1) Connect connector to keyless start control module.
2) Measure voltage between “Steering lock unit power
supply” 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 output 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