2006 SUZUKI SX4 Power door

Downloaded from www.Manualslib.com manuals search engine 9F-3 Security and Locks:
Diagnostic Information and Procedures
Power Door Lock System Symptom Diagnosis (If Equipped)S6RW0D9604001
NOTE
• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or
output side of BCM. For checking procedure, refer 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.

Power Door Lock System Operation Inspection (If Equipped)S6RW0D9604002
1) Check the following operation:
a) Turn the driver side key cylinder is turned LOCK once, check all doors lock.
b) Turn the driver side door key cylinder is turned UNLOCK position with door key twice, check all doors unlock.
c) With all doors unlocked, insert key in key cylinder of driver side door and turn it to lock side, turn it again to lock
side within 3 seconds and check that no door can be opened even when door lock knob is moved to unlock
side (dead lock function, if equipped).
If malfunction is found, go to “Power Door Lock System Symptom Diagnosis (If Equipped)”. Condition Possible cause Correction / Reference Item
All door can not be locked
/ unlocked by all of
switchesCircuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
All door can not be locked
/ unlocked by only power
door lock switchCircuit fuse blownReplace fuse and check for short circuit.
Power door lock switch faultyCheck power door lock switch referring to
“Power Door Lock Switch Inspection (If
Equipped)”.
Wiring harness connected to power door
lock switch faultyRepair.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
All door can not be locked
/ unlocked by only key
cylinder switchCircuit fuse blownReplace fuse and check for short circuit.
Key cylinder switch faultyCheck key cylinder switch referring to “Door
Key Cylinder Switch Inspection (If Equipped)”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Only one door can not be
locked / unlockedPower door lock actuator faultyCheck actuator referring to “Power Door Lock
Actuator Inspection (If Equipped)”.
Wiring harness connected to applicable
door lock actuator faultyRepair.
BCM faultyReplace after making sure that none of above
parts is faulty.

Downloaded from www.Manualslib.com manuals search engine Security and Locks: 9F-4
Keyless Entry System Symptom Diagnosis (If Equipped)S6RW0D9604003
NOTE
• Confirm that power door lock system is in good condition before referring to the following possible
causes.
• Check each part in the order from the top of the following list.

Condition Possible cause Correction / Reference Item
All door can not be locked
/ unlocked by only
keyless entry transmitterTransmitter battery deadReplace battery referring to “Replacement of
Transmitter Battery (Other than Keyless Start
Model)”.
Door switch faultyCheck door switch referring to “Door Switch
(Front / Rear Door) Inspection in Section 9C”
and/or “Rear End Door Switch Inspection in
Section 9C”.
Transmitter faultyReplace transmitter.
Key reminder switch in ignition switch
faultyCheck ignition switch referring to “Ignition
Switch Inspection in Section 9C”.
Wiring or grounding faultyRepair circuit.
Keyless entry receiver faultyCheck keyless entry receiver referring to
“Keyless Entry Receiver and Its Circuit
Inspection (If Equipped)”.
BCM faultyReplace after making sure that none of above
parts is faulty.
Turn signal lights can not
be flashed when doors
are locked / unlocked by
keyless entry transmitterTurn signal and hazard warning relay
faultyCheck turn signal and hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection in Section 9B”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Interior light does not
light when doors are
unlocked by keyless entry
transmitterWiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Hazard warning lights do
not light when doors are
locked/unlocked by
keyless entry transmitterTurn signal and hazard warning relay
faultyCheck turn signal and hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection in Section 9B”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Transmitter code can not
be programmed to BCMDoor switch faultyCheck door switch referring to “Door Switch
(Front / Rear Door) Inspection in Section 9C”
and/or “Rear End Door Switch Inspection in
Section 9C”.
Keyless entry receiver faultyCheck keyless entry receiver referring to
“Keyless Entry Receiver and Its Circuit
Inspection (If Equipped)”.
Key reminder switch in ignition switch
faultyCheck ignition switch referring to “Ignition
Switch Inspection in Section 9C”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.

Downloaded from www.Manualslib.com manuals search engine 9F-5 Security and Locks:
Keyless Entry System Operation Inspection (If
Equipped)
S6RW0D9604004
NOTE
When performing the this inspection, make
sure to have any of the door once opened /
closed after the ignition key has been
removed from the ignition key cylinder.

1) Confirm that power door lock system operates
normally, refer to “Power Door Lock System
Operation Inspection (If Equipped)”.
2) All doors are closed and unlocked.
3) Check the following operation:
a) Push “lock” button (1) on transmitter (2) or
remote controller once, and check all doors lock
and hazard waning lights flash once.b) Push “unlock” button (3) on transmitter (2) or
remote controller twice, and check all doors
unlock and hazard waning lights flash twice and
interior light turns on several seconds with the
interior light switch in the middle position.
If malfunction is found, go to “Keyless Entry System
Symptom Diagnosis (If Equipped)”.
Door Lock Function of Keyless Start System
Symptom Diagnosis (If Equipped)
S6RW0D9604005
Proceed to “Keyless Start System Symptom Diagnosis in
Section 10E” in case that doors cannot be locked and
unlocked by operating the request switch at the outside
door handle.
Rear End Door Opener System Symptom Diagnosis (If Equipped)S6RW0D9604006
NOTE
• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or
output side of BCM. For checking procedure, refer 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.

Rear End Door Opener System Operation Inspection (If Equipped)S6RW0D9604007
1) Unlock all doors by using manual lock switch, keyless entry transmitter, or key cylinder switch.
2) Make sure that latch of rear end door is released from striker when rear end door opener switch is pushed.
If malfunction is found, go to “Rear End Door Opener System Symptom Diagnosis (If Equipped)”.
1
3
2I4RS0B960013-01
Condition Possible cause Correction / Reference Item
Rear end door can not be
openedCircuit fuse blownReplace fuse and check for short circuit.
Rear end door opener switch faultyCheck rear end door opener switch referring to
“Rear End Door Opener Switch Inspection (If
Equipped)”.
Rear end door actuator faultyCheck rear end door actuator referring to
“Power Door Lock Actuator Inspection (If
Equipped)”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.

Downloaded from www.Manualslib.com manuals search engine Security and Locks: 9F-8
Front Door Lock Assembly InspectionS6RW0D9606003
• Check that door open and closes smoothly and
properly.
• Check that door stops in the secondary latched
position properly (preventing door from opening
freely) and that door closed completely in the fully
latched position.
• Adjust door latch striker position referring to “Front
Door Lock Assembly Removal and Installation”, if
necessary.
Power Door Lock Switch Inspection (If
Equipped)
S6RW0D9606004
Check for continuity between terminals at each switch
position. If check result is not as specified, replace
switch.
Door Key Cylinder Switch Inspection (If
Equipped)
S6RW0D9606005
1) Remove front door trim referring to Step 1) to 3) of
“Front Door Glass Removal and Installation in
Section 9E”.
2) Check for continuity between terminals at each
switch position. If check result is not as specified,
replace door lock assembly.
1. Power door lock switch
I6RW0C960003-01
a
bc
LOCK
OFF
UNLOCK
bcd
cbaRight side switch terminals
Left side switch terminals
d
I4RS0B960007-01

Downloaded from www.Manualslib.com manuals search engine 9F-9 Security and Locks:
Power Door Lock Actuator Inspection (If
Equipped)
S6RW0D9606006
1) Remove door trim from door panel.
For front door, refer to Step 1) to 3) of “Front Door
Glass Removal and Installation in Section 9E”.
For rear door, refer to Step 1) to 3) of “Rear Door
Glass Removal and Installation in Section 9E”.
For rear end door, refer to Step 1) of “Rear End Door
Assembly Removal and Installation in Section 9J”.
2) Disconnect power door lock actuator coupler.
3) Connect battery positive (+) and negative (–)
terminals to the door lock actuator terminals (a, b, c,
d) as shown in figure.
If it does not operate as specified in the following
table, replace door lock assembly.
For front doorFor rear door
For rear end door
[A]: Without deadlock
[B]: With deadlock
ab cd
Right side switch terminals b
Unlock Lock
Lock Deadlock
Lock Unlock
Left side switch terminals c
Unlock
Deadlock
[A]
[B]
Right side switch terminals bd
Unlock Lock
Lock Unlock
Left side switch terminals ca
acd dba
I5RW0C960002-03
[A]: Without deadlock
[B]: With deadlock
ab cd
Right side switch terminals c
Unlock Lock
Lock Deadlock
Lock Unlock
Left side switch terminals b
Unlock
Deadlock
[B] [A]
Right side switch terminals
b d
Unlock Lock
Lock Unlock
Left side switch terminalsc a
dba acd
I5RW0C960001-03
ab
Lock Unlock
a
b
I5RW0C960003-03

Downloaded from www.Manualslib.com manuals search engine 10-ii Table of Contents
Immobilizer Indicator Light Remains ON after
Engine Start ..................................................10C-10
DTC P1614: Transponder Response Error .....10C-10
DTC P1615: Steering Lock Unit
Communication Error ....................................10C-11
DTC P1616: Unregistered Keyless Start
Control Module ..............................................10C-12
DTC P1618: Keyless Start Control Module
CAN Communication Error............................10C-13
DTC P1621: Immobilizer Communication
Line Error ......................................................10C-13
DTC P1622: EEPROM Reading / Writing
Error ..............................................................10C-14
DTC P1623: Unregistered Transponder .........10C-14
DTC P1625: Immobilizer Antenna Error..........10C-15
DTC P1636: Immobilizer Information
Registration Failure .......................................10C-15
DTC P1638: Immobilizer Information
Mismatched ...................................................10C-16
Inspection of ICM and Its Circuit .....................10C-17
Repair Instructions ..........................................10C-19
ICM Removal and Installation .........................10C-19
Registration of the Ignition Key .......................10C-19
Procedure after ECM Replacement ................10C-19
Special Tools and Equipment .........................10C-20
Special Tool ....................................................10C-20
Keyless Start System .............................10E-1
General Description ........................................... 10E-1
Keyless Start System Description ..................... 10E-1
Parts and Functions .......................................... 10E-2
Keyless Engine Start Function .......................... 10E-3
Door Lock Function of Keyless Start System .... 10E-4
Operation Area of Remote Controller................ 10E-5
Alarm Function .................................................. 10E-6
CAN Communication System Description......... 10E-6
Schematic and Routing Diagram ...................... 10E-7
Keyless Start System Electric Wiring Circuit
Diagram .......................................................... 10E-7
Diagnostic Information and Procedures .......... 10E-8
Precautions in Diagnosing Troubles ................. 10E-8
Self-Diagnosis Function .................................... 10E-8
Keyless Start System Diagnosis Introduction ... 10E-8
Keyless Start System Check ............................. 10E-9
Customer Questionnaire (Example) ................ 10E-10Key Indicator Light Check ............................... 10E-10
DTC Check...................................................... 10E-11
DTC Table ....................................................... 10E-12
DTC Clearance ............................................... 10E-12
Keyless Start System Symptom Diagnosis ..... 10E-13
Keyless Start System Operation Inspection .... 10E-14
Door Lock Operation (Keyless Start System) . 10E-14
Inspection of Keyless Start Control Module
and Its Circuits .............................................. 10E-14
No DTC Detection After Performing DTC
Check ............................................................ 10E-20
Key Indicator Light Circuit Check (Key
Indicator Light Doesn’t Light when Ignition
Knob Switch is Pushed) ................................ 10E-21
Keyless Start Control Module Power and
Ground Circuit Check .................................... 10E-23
DTC No. 11: Communication Error with
Steering Lock Unit ......................................... 10E-24
DTC No. 13 / No. 14: Release Signal Error
from Steering Lock Unit / Steering Lock Unit
Malfunction .................................................... 10E-25
DTC No. 21 / No. 22: Internal Error of Keyless
Start Control Module (EEPROM Reading
Error) / (EEPROM Writing Error) ................... 10E-25
DTC No. 31: Lost Communication with BCM .. 10E-26
DTC No. 33: Control Module Communication
Bus Off .......................................................... 10E-26
DTC No. 51 / No. 52 / No. 53: Driver Side /
Passenger Side / Rear End Door Request
Switch Failure................................................ 10E-26
Repair Instructions .......................................... 10E-27
Antennas and Request Switches Removal
and Installation .............................................. 10E-27
Front Door (Driver and Passenger Side), Rear
End Door Request Switch Inspection............ 10E-28
Steering Lock Unit Removal and Installation .. 10E-28
Steering Lock Unit Inspection ......................... 10E-28
Front Door Lock Switch Inspection ................. 10E-28
Keyless Start Control Module Removal and
Installation ..................................................... 10E-29
Remote Controller Inspection.......................... 10E-29
Replacement of Remote Controller Battery .... 10E-29
Registration Procedure for Remote Controller
ID Code ......................................................... 10E-30
Keyless Start Registration ............................... 10E-31

Downloaded from www.Manualslib.com manuals search engine 10B-1 Body Electrical Control System:
Control Systems
Body Electrical Control System
Precautions
Precautions in Diagnosing TroubleS6RW0DA200001
• Diagnostic information stored in BCM memory can be cleared as well as checked by using SUZUKI scan tool.
Before using scan tool, read its Operator’s (Instruction) Manual carefully to have good understanding as to what
functions are available and how to use it.
• Be sure to read “Precautions for Electrical Circuit Service in Section 00” before inspection and observe what is
written there.
• Communication of ECM, TCM (A/T model), ABS control module, 4WD control module (if equipped), keyless start
control module (if equipped), combination meter and BCM is established by CAN (Controller Area Network). For
detail of CAN communication for BCM, refer to “CAN Communication System Description”. Therefore, handle CAN
communication line with care referring to “Precaution for CAN Communication System in Section 00”.
General Description
BCM General DescriptionS6RW0DA201001
The Body electrical Control Module (BCM) is
incorporated in junction block. Do not attempt removal of
BCM from junction block as it may cause contact failure.
The BCM incorporates relays and controllers which are
used for the following systems and controls them.
• Power door lock (if equipped)
• Keyless entry (if equipped)
• Door lock function of keyless start system (if
equipped)
• Rear wiper
• Combination meter
• Interior light• Warning buzzer
• Rear end door window defogger and door mirror
heater (if equipped)
• Rear end door opener (if equipped)
• Theft deterrent light
Also, the BCM has a function to cause the interior light
and open door warning light in the combination meter to
turn off when any door is left open for longer than 15
minutes to reduce wasteful battery consumption.
In addition, it is possible to check operation of actuator
which is controlled by BCM by using the output test
function of SUZUKI scan tool to operate actuator
simulatively.
CAN Communication System DescriptionS6RW0DA201002
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
BCM communication control data with each control module as follows.
BCM Transmission Data
A/C switch ON signal
Electric load signal
Brake fluid level switch signal
Parking brake switch signal
Diagnostic trouble code (DTC)
Illumination ON signal
Seat belt buckle switch signal
Charging system signal
Engine oil pressure switch signal
Door switch status
Door lock statusECMKeyless Start
Control Module
(if equipped) Combination
Meter
BCMTransmit
DATA
I6RW0CA20001-01

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-2
BCM Reception Data
Theft Deterrent LightS6RW0DA201003
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 intervals after the ignition switch is turned off until it is turned
on again. Also, DTCs stored in BCM can be checked by reading the flashing patterns of the theft deterrent light when
diagnosing troubles.
Security Alarm Description (If Equipped)S6RW0DA201005
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 deterrent 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
Engine speed signal
Vehicle speed signal Engine coolant temperature signal
Brake pedal switch signal
A/C refrigerant pressure signal
Fuel consumption signal A/C compressor clutch signal
Engine type signal
Transmission range sensor signal
Combination meter spec signal
Ignition knob switch signal
Door lock/unlock request signal
Buzzer request signal
Answer back request signal DATA BCM
Receive
Combination
Meter TCM
(A/T model)Keyless Start
Control Module
(if equipped) ECM
I6RW0CA20002-01
12
I5RW0AA20003-01