lash SUZUKI SWIFT 2005 2.G Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 10C-3 Immobilizer Control System:
Immobilizer Control System Components LocationS7RS0BA301002
On-Board Diagnostic System Description (Self-diagnosis Function)S7RS0BA301003
ECM diagnoses if there is any trouble with the immobilizer control system. The diagnostic information is stored as the
diagnostic trouble code (DTC) in ECM. To read the di agnostic information, use SUZUKI scan tool referring to
“Diagnostic Trouble Code (DTC) Check”.
With the ignition switch turned ON (but the engine at stop) regardless of the condition of the engine and emission
control system, ECM indicates whether ther e is any trouble with the immobilizer control system or not by either lighting
ON or flashing ON and OFF t he immobilizer indicator lamp.
Immobilizer indicator lamp lights ON:
No trouble exists in the immobilizer control system. (After starting up the engine, the light turns OFF.)
Immobilizer indicator lamp flashes ON and OFF:
There is some trouble in the immo bilizer control system. Its diagnostic information is stored in ECM.
13
4
56
7
2
I6RS0CA30001-01
1. ECM 4. Ignition key with keyless entry system 7. Transponder
2. Immobilizer indicator lamp 5. Ignition key without keyless entry system
3. Immobilizer control module (ICM) 6. Ignition key with keyless start system

Downloaded from www.Manualslib.com manuals search engine 10C-5 Immobilizer Control System:
Diagnostic Information and Procedures
Immobilizer Control System CheckS7RS0BA304001
Diagnostic Trouble Code (DTC) CheckS7RS0BA304002
NOTE
To know how to use SUZUKI scan tool in
detail, refer to its operator’s manual.

Using Scan Tool
1) Turn the ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector (DLC) (1) located under instrument panel at driver’s
seat side.
Special tool
(A): SUZUKI scan tool 3) Turn the ignition switch to ON position.
4) Check if any DTC is stored
in ECM according to the
instructions displayed on SUZUKI scan tool.
5) After completing the check, turn ignition switch to
OFF position, and then di sconnect SUZUKI scan
tool from DLC.
Using Diagnosis Connector (If equipped)
Refer to “Without Using Scan Tool (Vehicle Equipped
with Diagnosis Connector)” under “DTC Check in
Section 1A”.
Step Action Yes No
1 Immobilizer indicator lamp check
Turn ignition switch to ON position using ignition key.
Does it immobilizer in dicator lamp come on? Go to Step 2.
Check if DTC P1636
and/or P1638 are
detected by ECM
referring to “Diagnostic
Trouble Code (DTC)
Check”. If detected, go
to applicable DTC diag.
flow. If not detected, go
to “Immobilizer Indicator
Lamp Does Not Come
ON with Ignition Switch
ON and Engine Stop”.
2 Immobilizer indicator lamp check
Does it immobilizer indicato r lamp flashes on and off
continuously in Step 1? Check ECM for DTC
referring to “Diagnostic
Trouble Code (DTC)
Check”. Then, Go to
applicable DTC diag.
flow.Go to Step 3.
3 Engine start check
Start engine using ignition key.
Does engine start? Go to Step 4.
Perform “Engine and
Emission Control
System Check in
Section 1A”.
4 Immobilizer indicator lamp check
Check Immobilizer indicator la mp remains ON after engine
start.
Does immobilizer indicator la mp remains ON after engine
start? Go to “Immobilizer
Indicator Lamp
Remains ON after
Engine Starts”.
Immobilizer system is
good condition. Then go
to “Keyless Start
System Check in
Section 10E”. (Vehicle
equipped with keyless
start system only)
(A)1
I4RS0BA30003-03

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-6
Diagnostic Trouble Code (DTC) ClearanceS7RS0BA304003
NOTE
To know how to use SUZUKI scan tool in
detail, refer to its operator’s manual.

Using Scan Tool
1) Turn the ignition switch to OFF position,
2) Connect SUZUKI scan tool to data link connector (DLC) (1) located under instrument panel at driver’s
seat side.
Special tool
(A): SUZUKI scan tool 3) Turn the ignition switch to ON position.
4) Clear DTC(s) according to the instructions displayed
on SUZUKI scan tool.
5) After completing the clearance, turn the ignition switch to OFF position, and then disconnect SUZUKI
scan tool from DLC.
Using Diagnosis Connector (If Equipped)
Refer to “Without Using Scan Tool” under “DTC
Clearance in Section 1A”.
Diagnostic Trouble Code (DTC) TableS7RS0BA304004
ECM
NOTE
If any DTC other than the above DTCs is detected, refer to “DTC Table in Section 1A”.

(A)1
I4RS0BA30003-03
DTC No. Detecting Item Detecting ConditionImmobilizer
Indicator Lamp
P1614 Transponder Response Error Transponder code in the transponder built in
the ignition key cannot be read through ICM.Flash
P1615 ID Code Does Not Re
gistered (Vehicle
equipped with Keyless Start System only) • While registering the transponder code in
the transponder built in the ignition key in
ECM, the keyless start control module
sent a signal to ECM indicating that the ID
code could not be registered.
• The ID code could not be registered in the keyless start control module or ECM. Flash
P1616 Different Registration ID Codes (Vehicle
equipped with Keyless Start System only) ECM detects different ID codes registered in
ECM and keyless start system.
Flash
P1618 CAN Communication Error (Reception Error
for Keyless Start Control Module) (Vehicle
equipped with Keyless Start System only) Reception error communication data for
keyless start control module is detected for
longer than specified time continuously.
Flash
P1621 Immobilizer Commu nication Line ErrorCommunication error between ICM and
ECM is detected by ECM. Flash
P1622 EEPROM Reading / Writing Error EEPROM in ECM is corrupted.Flash
P1623 Unregistered Transponder Transponder code in the transponder built in
the ignition key is invalid.Flash
P1625 Immobilizer Antenna Error ICM is faulty.Flash
P1636 Immobilizer Information Registration Failure Communication error between ECM and
BCM is detected by ECM.No operation
P1638 Immobilizer Info rmation Mismatched • Communication error between ECM and
BCM is detected by ECM
• Wrong ECM or BCM is used. No operation

Downloaded from www.Manualslib.com manuals search engine 10C-7 Immobilizer Control System:
Scan Tool DataS7RS0BA304005
Scan Tool Data Definitions
NUMBER OF LEARNT KEY
0 – 4 PCS: The number of the transponder code in the transponder built in the ignition key that is registered with ECM
NOTE
A maximum of four transponder codes can be registered with ECM. Therefore, the maximal value
should be 4.

INPUT YEAR
20**: The year in which the transponder code in the transpon der built in the ignition key is registered with ECM
INPUT MONTH
1 – 12: The month in which the transponder code in the transpond er built in the ignition key is registered with ECM
Immobilizer Indicator Lamp Does Not Come ON with Ignition Switch ON and Engine StopS7RS0BA304006
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Circuit Description
When the ignition switch is turned ON, ECM read the code by the coil antenna from ignition key. Then if the code in
transponder in the key match with the one registered with ECM, transmits indication ON signal of immobilizer indicator
lamp to combination meter in order to turn immobilizer indicator lamp on. And then, combination meter turns
immobilizer indicator lamp on. When th e engine starts to run and no malfunction is detected in the system, ECM
transmits immobilizer indi cator lamp indication OFF signal to combination meter in order to turn immobilizer indicator
lamp off. And then, comb ination meter turns immobilizer indicator lamp off, but if a malfunction was or is detected,
immobilizer indicator lamp is flashes ON and OF F, when ignition switch turn to ON position.
Troubleshooting Scan Tool Data Vehicl
e Condition Normal Data
NUMBER OF LEARNT KEY Ignition switch at ON position 0 – 4 INPUT YEAR Ignition switch at ON position 2005 or later
INPUT MONTH Ignition switch at ON position 1 – 12
Step Action YesNo
1 Immobilizer indicator lamp power supply check
1) Turn ignition switch to ON position.
Do other warning lights come ON? Go to Step 2.
Go to Step 4.
2 DTC check of ECM
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC.
Is DTC P1674, P1675, P1678 and/or P1685 detected? Go to applicable DTC
diag. flow.
Go to Step 3.
3 DTC check of BCM
1) Check BCM for DTC referring to “DTC Check in Section
10B”.
Is DTC U1073, U1100 and/or U1144 detected? Go to applicable DTC
diag. flow.
Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains OFF,
substitute a known good
ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-8
Immobilizer Indicator Lamp Remains ON after Engine StartsS7RS0BA304007
Wiring Diagram
Refer to “Immobilizer Control S ystem Wiring Circuit Diagram”.
Circuit Description
When the ignition switch is turned ON, ECM read the code by the coil antenna from ignition key. Then if the code in
transponder in the key match with the one registered with ECM, transmits indication ON signal of immobilizer indicator
lamp to combination meter in order to turn immobilizer indicator lamp on. And then, combination meter turns
immobilizer indicator lamp on. When th e engine starts to run and no malfunction is detected in the system, ECM
transmits immobilizer indicator lamp indication O FF signal to combination meter in order to turn immobilizer indicator
lamp off. And then, comb ination meter turns immobilizer indicator lamp off, but if a malfunction was or is detected,
immobilizer indicator lamp is flashes ON and OF F, when ignition switch turn to ON position.
Troubleshooting 4
Fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown at combination meter circuit fuse in
junction block assembly.
Is fuse in good condition? Go to Step 5. Replace fuse and check
for short to power or
ground circuit.
5 CAN communication circuit check
1) Disconnect connectors of all control modules
communicating by means of CAN.
2) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 6. Repair circuit.
6 Combination meter power and ground circuit check
1) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C”.
2) Check for proper connection to combination meter connector terminals.
3) If OK, then turn ignition switch to ON position, Check terminal voltage of combination meter between power
supply and ground terminal. Refer to “Combination
Meter Circuit Diagram in Section 9C”.
Is it 10 – 14 V? Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains OFF,
substitute a known good
ECM and recheck.
Repair power supply
and/or ground circuit.
Step Action Yes No
Step
Action YesNo
1 DTC check of ECM
1) Start engine and recheck DTC of ECM while engine
running.
Is DTC P1674, P1675, P1678 and/or P1685 detected? Go to applicable DTC
diag. flow.
Go to Step 2.
2 CAN communication circuit check
1) Disconnect connectors from ECM, BCM, ABS control
module and combination meter.
2) Check CAN communication circuit for open, short and high resistance.
• Between ECM and ABS control module
• Between BCM and ABS control module
• Between BCM and combination meter
Is each CAN communication circuit in good condition? Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains ON,
substitute a known-
good ECM and recheck.
Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-3
Keyless Engine Start FunctionS7RS0BA501003
When the ignition knob switch (2) installed to the steering lock unit (1) is pushed, the keyless start control module (3)
activates the center antenna (4) to send out the request signa l in the vehicle compartment. When the remote controller
(5) receives the request signal from th e center antenna, it transmits the ID code to the keyless start control module.
The keyless start control module compares the ID code sent by the remote controller with the ID code registered in the
keyless start control module. When these ID codes match, the keyless start control module makes the key indicator
lamp (7) in the combination meter (6) light in blue and unlocks the steering lock unit to enable the ignition knob switch
to turn. When the ignition knob switch is turned to ON posit ion in this state, ID codes of ECM and keyless start control
module are compared through CA N communication (immobilizer function). Wh en they match, turning the ignition knob
switch to start position will start the engine.
NOTE
When ignition knob switch is at ACC or ON position (engine not running) and any door has been kept
open for a certain time, it may happen that engine fails to start. In such a case, turn ignition knob
switch to OFF position once and then try to start engine again.

When the ID code from the remote controller and the ID code registered in the keyless start control module do not
match or when the remote controller is outside the operation area of the remote controller and the ignition knob switch
is pushed, the steering lock unit cannot be unlocked and so the ignition knob switch cannot be turned. Then, the
keyless start control module makes the key indicator lamp in t he combination meter light in red to warn the driver that
it is not possible to turn the ignition knob switch. Also, when the ID code of ECM and that of the keyless start control
module do not match, the engine cannot be started even if the ignition knob switch is turned to the start position. Then
ECM makes the immobilizer light in the combination mete r flash to warn the driver that it is not possible to start the
engine.
8 3
1
6 ii)
iii) iii)
iii)
iii)
iv)
i)
v)
vi)
vii)
7 6
2
[A]: i) ~ vii)
54
I5RS0CA50001-01
[A]: Signal flow
8. ECM

Downloaded from www.Manualslib.com manuals search engine 10E-6 Keyless Start System:
Alarm FunctionS7RS0BA501006
Under conditions as described in the table below, the keyless start control module makes the key indicator lamp flash
in red and the buzzer sound to call the driver’s attention.
CAN Communication System DescriptionS7RS0BA501007
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
Keyless start control module communicates control data wit h each control as follows.
Keyless Start Control Module Transmission Data
Keyless Start Control Module Reception Data Condition Buzzer operation Key indicator lamp operation
Ignition knob switch has stopped between ACC and OFF
positions while driver side door is opened (ignition knob
switch un-returned alarm) Intermittent —
Ignition switch has stopped between ACC and OFF
positions while driver side door is closed (ignition knob
switch un-returned alarm) 2 times Flashing in red
Remote controller is carried out of vehicle and doors are
closed while ignition switch is at ON position (remote
controller carried-out alarm) 5 times Flashing in red
Remote controller is carried out of vehicle through a window
without opening door while ignition switch is at ON position
(engine is running) and vehicle has been driven at 10km/h
(6 MPH) or more speed without remote controller in vehicle
compartment (the first time 10 km/h (6 MPH) speed is
exceeded only) (Remote cont roller carried-out alarm) 5 times Flashing in red
BCM
ECM Combination
Meter
ID code of keyless start control module
ECM-keyless start control module code
Ignition knob switch signal
Door lock/unlock request signal
Buzzer request signal
Answer back request signal
Key indicator light control signal
DATA
Transmit
Keyless Start
Control Module
I6JB0AA50005-01
Vehicle speed signal
ECM-keyless start control module code
Door switch status
Door lock status
Charging system signal
Engine oil pressure switch signal ECM BCM
DATA
ReceiveKeyless Start
Control Module
I5RW0CA50001-02

Downloaded from www.Manualslib.com manuals search engine 10E-8 Keyless Start System:
Diagnostic Information and Procedures
Precautions in Diagnosing TroublesS7RS0BA504001
• The keyless start system executes data transmission/reception by means of th e radio wave. Therefore,
proper operation may not be obtained if use of the
door lock function and engine start function of the
keyless start system is attempted near the place
where strong radio wave is emitted (TV and radio
broadcasting stations, etc.).
• Diagnostic information stored in keyless start control
module memory can be checked only by key indicator
lamp.
• Be sure to use the trouble diagnosis procedure as described in “Keyless Start System Check”. Failure to
follow it may result in incorrect diagnosis. (Some other
DTC may be stored by mistake in the memory of
keyless start control module during inspection.)
• Be sure to read “Precautions for Electrical Circuit Service in Section 00” befo re inspection and observe
what is written there.
• Communication of ECM, BCM, TCM (A/T model), ABS control module, keyless start control module and
combination meter is estab lished by CAN (Controller
Area Network). (For detail of CAN communication for
keyless start control module, refer to “CAN
Communication System Description”). Therefore,
handle CAN communication line with care referring to
“Precaution for CAN Communication System in
Section 00”. • Replacement of the keyless start control module
When keyless start control module is replaced with
new one, make sure that r egister remote controller ID
code to keyless start co ntrol module correctly
according to “Registration Procedure for Remote
Controller ID Code”.
• Keyless start control module substitution When the keyless start control module used in
another vehicle was installed in the vehicle, register
the ID code of the remote controller in the keyless
start control module as well as the ignition key
transponder code fo r the immobilizer control system in
ECM. For the registration procedure of the ignition key
transponder code, refer to “Registration of the Ignition
Key in Section 10C”.
Self-Diagnosis FunctionS7RS0BA504002
The keyless start control module has self-diagnosis
function to monitor the system components and circuits
while the keyless start system is at work. When the
keyless start control module detects an abnormality in
the system, it saves the ar ea where such abnormality
has occurred as a DTC in its memory. The DTC stored in
memory of the keyless start control module is indicated
by the key indicator lamp in the combination meter
flashing in a specific pattern. For DTC indication, refer to
“DTC Check” and for the clearing procedure, to “DTC
Clearance”.
Keyless Start System Diagnosis IntroductionS7RS0BA504003
To ensure that the trouble diagnosis is done accurately
and smoothly, observe “Precautions in Diagnosing
Troubles” and follow “Keyless Start System Check”.
Keyless Start System CheckS7RS0BA504004
Step Action YesNo
1 1) Record details of the problem. For your record, use of a questionnaire form will facilit ate collecting information for
proper analysis and diagnosis.
2) Check if the problem described in “Customer Questionnaire (Example)” actually occurs in the vehicle.
(This step should be performed with the customer if
possible.)
Perform “Keyless Start System Operation Inspection”
procedure to check if the symptom which has occurred is
abnormal or not.
3) Check for DTC referring to “DTC Check”, and then record DTC(s).
4) Clear DTC referring to “DTC Clearance” if any DTC exists, and then recheck for DTC.
Is any DTC still detected? Go to Step 2.
Go to Step 3.
2 1) Check and repair referring to applicable “DTC Table”. Are check and repair complete? Go to Step 5.
Check and repair
malfunction part(s), and
go to Step 5.

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-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
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[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