immobilizer SUZUKI SWIFT 2000 1.G SF310 Service User Guide

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-7
CON-
NECTOR
C02TERMI-
NAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26ECM ground
Power source (from main relay)
Blank
Blank
Blank
Blank
EVAP canister purge valve
Shift solenoid-B (A / T)
Shift solenoid-A (A / T)
Igniter
Idle speed control actuator
Fuel injector
Injector ground
Power source (from battery)
Power source (from main relay)
Idle speed control actuator relay
Malfunction indicator lamp
Immobilizer indicator lamp
Heater of HO2S-2
Radiator fan relay
Fuel pump relay
Main relay
Blank
Idle speed control actuator
EFE heater relay
Injector groundC031
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22Data link connector
Vehicle speed sensor (+) (A / T)
Vehicle speed sensor (M / T)
Transmission range sensor (switch)“2”
Transmission range sensor (switch)“N”
Transmission range sensor (switch)“P”
Blank
Blank
Heated oxygen sensor-2
Blank
Fuel level sensor (gauge)
Blank
Data link connector
Vehicle speed sensor (–) (A / T)
Transmission range sensor (switch)“L”
Transmission range sensor (switch)“D”
Transmission range sensor (switch)“R”
A / C ON (output) signal for A / C control module
(if equipped)
Electric load signal
A / C (input) signal from A / C control module
(if equipped)
Ignition switch
Blank
Blank CIRCUITCON-
NECTORTERMI-
NALCIRCUIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16Power source for sensors
Camshaft position sensor (+)
Crankshaft position sensor (+)
Closed throttle position switch
Manifold absolute pressure sensor
Throttle position sensor
Engine coolant temp. sensor
Heater of HO2S-1
Sensor ground
Camshaft position sensor (–)
Crankshaft position sensor (–)
EFE heater (monitor)
Heated oxygen sensor-1
Intake air temp sensor
Power steering pressure switch (if equipped)
Engine start signal circuit
C01
1. CMP sensor (in Distributor)
2. CKP sensor
3. TP sensor
4. MAP sensor
5. ECT sensor
6. IAT sensor
7. HO2S-1
8. HO2S-2
9. Transmission range switch (A / T)
10. VSS (A / T)
11. A / C control module (if equipped)
12. Heater blower switch
13. Fuel level sensor
14. Speedometer
15. P.SP switch
16. Rear defogger switch
17. Light switch
18. DLC
19. Fuel injector20. Injector resistor
21. Conister purge valve
22. Fuel pump relay
23. Rediator fan relay
24. EFE heater relay
25. ISC actuator relay
26. ISC actuator
27. Ignition coil
28. Igniter
29. Immobilizer indicator lamp
30. MIL
31. Main relay
32. Shift solenoid A (A / T)
33. Shift solenoid B (A / T)
34. Starter motor
35. Ignition switch

12 W / R “N”-range signal (A / T)
13 R Heated oxygen sensor-2
14 Y / R “D”-range signal (A / T)
15 R / W “R”-range signal (A / T)
16 Lg / B A / C SW signal
17 R / W EGR valve (stepper motor coil 4)
18 P / G Radiator fan relay
19 Y / Bl Fuel pump relay
20 —— ———
21 W / B “P”-range signal (A / T)
22 P / Bl Fuel level gauge
23 R / B “L”-range signal (A / T)
24 —— ———
1 V Malfunction indicator lamp
Vehicle speed sensor (M / T)
Output shaft speed sensor (+)
(A / T)
3 —— ———
4 G / W Shift solenoid – A (A / T)
5 Gr Throttle position (TP) sensor
6 B / W Ignition switch signal
7 Y / B Data link connector
Output shaft speed sensor (–)
(A / T)
9 —— ———
10 G GND for HO2S-2
11 G / Or Shift solenoid – B (A / T)
12 —— ———
13 —— ———
14 —— ———
15 —— ———
16 Br Tachometer signal
17 B / Y Engine start signal
CON-
NECTORTERMINALWIRE
COLORCIRCUITCON-
NECTORTERMINALWIRE
COLORCIRCUIT
20
Br / Y 19
Br / W
C02 C01C02
C03
Wire color
B : Black
B / Or : Black / Orange
B / W : Black / White
B / Y : Black / Yellow
Bl : Blue
Bl / Or : Blue / Orange
Bl / B : Blue / Black
Bl / R : Blue / Red
Bl / Y : Blue / Yellow
Br : Brown
Br / W : Brown / White
Br / Y : Brown / Yellow
G : Green
G / Or : Green / Orange
G / R : Green / Red
G / W : Green / White
Gr : Gray
Gr / R : Gray / Red
Lg / B : Lightgreen / Black
Lg / R : Lightgreen / RedP : Pink
P / Bl : Pink / Blue
P / G : Pink / Green
V : Violet
V / G : Violet / Green
V / R : Violet / Red
V / W : Violet / White
W : White
W / B : White / Black
W / R : White / Red
R : Red
R / B : Red / Black
R / Bl : Red / Blue
R / G : Red / Green
R / W : Red / White
R / Y : Red / Yellow
Y / B : Yellow / Black
Y / Bl : Yellow / Blue
Y / R : Yellow / Red
2
P
8
Bl
6E2-12 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1 B Ground for ECM / PCM
2 B / Or Ground for drive circuit
3 B / Or Ground for drive circuit
4 V / R Canister purge valve
5 G / W Power steering pressure switch
6 V / W IAC valve
7 Bl Heater of HO2S-1
8 Bl / Or No.4 fuel injector
9 Bl / R No.1 fuel injector
10 G Ground for sensor circuit
11 B / W CMP sensor
12 —— ———
13 R Heated oxygen sensor-1
14 Lg / R Coolant temp. sensor
15 Gr / R Intake air temp. sensor
16 —— ———
17 Br / Y Electric load (+)
18 —— ———
IG coil assembly for
No.2 and 3 spark plugs
IG coil assembly for
No.1 and 4 spark plugs
21 Bl / B No.2 fuel injector
22 P Power supply for sensor
23 W CKP sensor (+)
24 B CKP sensor (–)
25 —— ———
26 G MAP sensor
27 —— ———
28 V / G Immobilizer indicator lamp
29 —— ———
30 —— ———
31 Bl / Y No.3 fuel injector
1 G / R A / C compressor clutch
2 R / Y EGR valve (stepper motor coil 1)
3 R / G Data link connector
4 Lg / B Heater of HO2S-2
5 R / B Power source
6 R / B Power source
7 W Backup power source
8 R EGR valve (stepper motor coil 3)
9 R / Bl EGR valve (stepper motor coil 2)
10 Gr Ground for main relay
11 Y / B “2”-range signal (A / T)

8G
IMMOBILIZER CONTROL SYSTEM 8G-1
GENERAL DESCRIPTION8G- 2 . . . . . . . . . . . . . .
On-Board Diagnostic System
(Self-Diagnosis Function) 8G- 4. . . . . . . . . . . . .
DIAGNOSIS8G- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in Diagnosing
Troubles 8G- 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC FLOW TABLE 8G- 8. . . . . . . . . . . . .
Diagnostic Trouble Code Check
(Immobilizer Control Module) 8G-10. . . . . . . . .
Diagnostic Trouble Code Check (ECM) 8G-10. .
Diagnostic Trouble Code Table 8G-12. . . . . . . . .
A-1 Code (DTC) is not Outputted
from Diagnostic Output Terminal
of Immobilizer Diagnostic Coupler 8G-13. . . . . A-2 Immobilizer Indicator Lamp Check
(Immobilizer Indicator Lamp does not
Light at Ignition Switch ON) 8G-14. . . . . . . . . . .
A-3 Immobilizer Indicator Lamp Check
(Immobilizer Indicator Lamp Remains
ON after Engine Starts) 8G-15. . . . . . . . . . . . . .
HOW TO REGISTER IGNITION KEY8G-16 . . . . .
PROCEDURE AFTER IMMOBILIZER
CONTROL MODULE REPLACEMENT8G-17 . .
PROCEDURE AFTER ECM
REPLACEMENT8G-18 . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS8G-18 . . . . . . . . . . . . . . . . . . . . . .
SECTION 8G
IMMOBILIZER CONTROL SYSTEM
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:

Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under “Gener-
al Description” in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and “Service Precau-
tions” under “On-Vehicle Service” in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render the system inoperative. Either of these two conditions may
result in severe injury.

Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:

Whether the immobilizer indicator lamp is used in the particular vehicle or not depends on specifica-
tions. If there is a monitor coupler in the engine room near the left strut assembly, the vehicle is not
equipped with immobilizer indicator lamp and if there isn’t, it is equipped with immobilizer indicator
lamp.

For the descriptions (items) not found in this section, refer to the section 8G of the Service Manual men-
tioned in FOREWORD of this manual.
CONTENTS

Ignition key
Transponder
code
Immobilizer
Control
Module
ECM
(1)(2)
(3)(4)
1. Coil antenna
2. Immobilizer Control
Module
3. Engine Control Module
(ECM)
4. Ignition key
8G-2 IMMOBILIZER CONTROL SYSTEM
GENERAL DESCRIPTION
The immobilizer control system designed to prevent vehicle burglar consists of following components.

Engine Control Module (ECM)

Immobilizer Control Module

Ignition key (with built-in transponder)

Coil antenna
Operation of this system is as follows.
(1) Each ignition key has its own code (Transponder code) stored in memory. When the ignition switch is turned
ON, Immobilizer Control Module tries to read the Transponder code through the coil antenna installed to the
steering lock assembly.
(2) Immobilizer Control Module compares the Transponder code read in (1) and that registered in Immobilizer Con-
trol Module and checks if they match.
(3) When it is confirmed that two Transponder codes match each other as described above, Immobilizer Control
Module and ECM check if ECM/Immobilizer Control Module codes registered in them respectively match.
(4) Only when it is confirmed that ECM/Immobilizer Control Module codes match, the engine starts running. If
Transponder codes in Step (2) or ECM/Immobilizer Control Module codes in Step (3) do not match, ECM will
stop operation of the injector and the ignitor (i.e., ignition of spark plug).

IMMOBILIZER CONTROL SYSTEM 8G-3
Vehicle without monitor coupler
1. Coil antenna
2. Immobilizer Control Module
3-1. ECM (G10 engine)
3-2. ECM (G13 engine without monitor coupler)
3-3. ECM (G13 engine with monitor coupler)
4. Immobilizer diagnostic coupler
4-1. Diagnostic output terminal
4-2. Ground terminal
5. Malfunction indicator lamp
6. Main relay
7. Ignition switch
8. Fuse
9. Main fuse
10. To #9-pin in Data link connector
11. To #7-pin in Data link connector
12. To ABS control module
13. Immobilizer indicator lamp
(Vehicle not equipped with monitor coupler)
14. Monitor coupler (Vehicle not equipped
with immobilizer indicator lamp)
Vehicle with monitor couplerG10 engineG13 engine
G13B engine
n
W/R
Bl / B
W/Bl
B/W
V/G
W/Bl
B/W
B
V/W
V/W
P/B
P/Bl
P/G
B
B
B/Bl
B/R
–
R/G
–W/R
Gr
R/B
B/W
V/G
W/Bl
B/W
B
Y/B
V/W
P/B
P/Bl
P/G
B
B
B/Or
B/Or
–
R/G
–W/R
G/B
W/Bl
B/W
–
W/Bl
B/W
B
V/W
V/W
P/B
P/Bl
P/G
B
B/Bl
B/Bl
B/G
V
–
V/Y WIRE
SYMBOL
G10 engineG13 engine
without monitor
couplerG13 engine
with monitor
coupler WIRE COLORabcdefghijklmnopqrst

0.5TIME (sec.) Ignition switch ON
High Immobilizer
control system
is normal
Immobilizer
control system
is abnormalLow
0.5 0.5 0.5 0.5
High
Low
8G-4 IMMOBILIZER CONTROL SYSTEM
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION)
Immobilizer Control Module & ECM diagnose troubles which may
occur in the area including the following parts when the ignition
switch is ON.
ECM:
ECM/Immobilizer Immobilizer
Control Module Control
code Module:
Transponder code

Data link connector
Coil antenna
wire
ECM/Immobilizer

ECM Control Module
code

Data link
connector wire

Immobilizer
Control Module

Ignition signal
<Vehicle equipped with monitor coupler>
With the diagnosis switch terminal of monitor coupler for ECM not
grounded, the ignition switch turned ON (but the engine at stop) and
regardless of the condition of the engine and emission control sys-
tem, ECM indicates whether a trouble has occurred in the immobi-
lizer control system or not by causing the malfunction indicator lamp
to flash or turn ON.
Malfunction indicator lamp is ON:
No trouble exists in the immobilizer control system.
Malfunction indicator lamp is flashing:
ECM or Immobilizer Control Module has detected some trouble in
the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM and Immobi-
lizer Control Module diagnose if a trouble has occurred in the
immobilizer control system. While the diagnosis is being
made, the malfunction indicator lamp stays ON and if the diag-
nosis result is “abnormal”, it immediately changes to flashing
but if the result is “normal”, it remains ON. Diagnosis takes
about 3 seconds at maximum.

IMMOBILIZER CONTROL SYSTEM 8G-5
0.5TIME (sec.) Ignition switch ON
High Immobilizer
control system
is normal
Immobilizer
control system
is abnormalLow
0.5 0.5 0.5 0.5
High
Low
<Vehicle not equipped with monitor coupler>
With the ignition switch turned ON (but the engine at stop) regard-
less of the condition of the engine and emission control system,
ECM indicates whether a trouble has occurred in the immobilizer
control system or not by causing the immobilizer indicator lamp to
flash or turn ON.
Immobilizer indicator lamp is ON:
No trouble exists in the immobilizer control system.
Immobilizer indicator lamp is flashing:
ECM or Immobilizer Control Module has detected some trouble in
the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM and Immobi-
lizer Control Module diagnose if a trouble has occurred in the
immobilizer control system. While the diagnosis is being
made, the Immobilizer indicator lamp stays ON and if the diag-
nosis result is “abnormal”, it immediately changes to flashing
but if the result is “normal”, it remains ON. Diagnosis takes
about 3 seconds at maximum.
When ECM and Immobilizer Control Module detects a trouble, it
stores DTC corresponding to the exact trouble area in ECM and Im-
mobilizer Control Module memory.
DTCs stored in memory of each controller (Immobilizer Control
Module and ECM) can be read by using the procedure described
in “DIAGNOSTIC TROUBLE CODE CHECK (IMMOBILIZER CON-
TROL MODULE)” and “DIAGNOSTIC TROUBLE CODE CHECK
(ECM)” in this section.

8G-6 IMMOBILIZER CONTROL SYSTEM
DIAGNOSIS
ECM and Immobilizer Control Module have on-board diagnostic
system (a system self-diagnosis function) as described previously.
Investigate where the trouble is by referring to “DIAGNOSTIC
FLOW TABLE” and “DIAGNOSTIC TROUBLE CODE TABLE” on
later pages.
PRECAUTIONS IN DIAGNOSING TROUBLES
[PRECAUTIONS IN IDENTIFYING DIAGNOSTIC TROUBLE
CODE]
ECM
<Vehicle equipped with monitor coupler>

Before identifying diagnostic trouble code indicated by malfunc-
tion indicator lamp, don’t disconnect couplers from ECM, battery
cable from battery, ECM ground wire harness from engine.
Such disconnection will clear trouble codes for engine and emis-
sion control system stored in memory of ECM.

If abnormality or malfunction lies in two or more areas, malfunc-
tion indicator lamp indicates applicable codes three times each.
And flashing of these codes is repeated as long as diagnosis ter-
minal is grounded and ignition switch is held at ON position.

When ECM detects a trouble in both engine and emission control
system and immobilizer control system, malfunction indicator
lamp indicates trouble codes of both systems alternately while the
ignition switch is turned ON and the diagnosis terminal is
grounded.

Take a note of diagnostic trouble code indicated first.
<Vehicle not equipped with monitor coupler>

Before identifying diagnostic trouble code indicated through Su-
zuki scan tool, don’t disconnect couplers from ECM, battery cable
from battery, ECM ground wire harness from engine.
Such disconnection will clear trouble codes for engine and emis-
sion control system stored in memory of ECM.

When ECM detects a trouble in both engine and emission control
system and immobilizer control system, Suzuki scan tool indi-
cates trouble codes of both systems using Suzuki mode of ECM
applications.

Take a note of diagnostic trouble code indicated first.
Immobilizer Control Module

Take a note of diagnostic trouble code indicated first.

IMMOBILIZER CONTROL SYSTEM 8G-7
[INTERMITTENT TROUBLES]
<Vehicle equipped with monitor coupler>

There are cases where output of diagnostic output terminal
and / or malfunction indicator lamp indicate a diagnostic trouble
code representing a trouble which occurred only temporarily and
has gone. In such case, it may occur that good parts are replaced
unnecessarily. To prevent such accident, be sure to follow instruc-
tions given below when checking by using “Diagnostic Flow
Table”.
* When trouble can be identified, it is not an intermittent one:
Check coil antenna, ignition key, wires and each connection
and if they are all in good condition, substitute a known-good
ECM and recheck.
* When trouble can not be identified but output of diagnostic out-
put terminal and / or malfunction indicator lamp indicate a
trouble code:
Diagnose trouble by using that code No. and if ignition key, coil
antenna, wires and each connection are all in good condition,
turn OFF ignition switch and then ON.
Then check what malfunction indicator lamp and / or output of diag-
nostic output terminal indicate.
Only when they indicate trouble code again, substitute a known-
good ECM or Immobilizer Control Module and check again.
If they indicate not trouble code but normal code, it means that an
intermittent trouble did occur and has gone. In this case, check
wires and connections carefully again.
<Vehicle not equipped with monitor coupler>

There are cases where output of diagnostic output terminal and /
or Suzuki scan tool indicate a diagnostic trouble code represent-
ing a trouble which occurred only temporarily and has gone. In
such case, it may occur that good parts are replaced unnecessar-
ily. To prevent such accident, be sure to follow instructions given
below when checking by using “Diagnostic Flow Table”.
* When trouble can be identified, it is not an intermittent one:
Check coil antenna, ignition key, wires and each connection
and if they are all in good condition, substitute a known-good
ECM and recheck.
* When trouble can not be identified but output of diagnostic out-
put terminal and / or Suzuki scan tool indicate a trouble code:
Diagnose trouble by using that code No. and if ignition key, coil
antenna, wires and each connection are all in good condition,
turn OFF ignition switch and then ON.
Then check what Suzuki scan tool and / or output of diagnostic out-
put terminal indicate.
Only when they indicate trouble code again, substitute a known-
good ECM or Immobilizer Control Module and check again.
If they indicate not trouble code but normal code, it means that an
intermittent trouble did occur and has gone. In this case, check
wires and connections carefully again.

8G-8 IMMOBILIZER CONTROL SYSTEM
Fig. 1 for Step 1 Fig. 2 for Step 1 Fig. 3 for Step 2
1. Monitor coupler
2. Service wire
A: Diagnosis switch terminal
B: Ground terminal
Fig. 4 for Step 3
“CHECK ENGINE” light
0.5
ON
OFF
TIME (sec.)
DIAGNOSTIC FLOW TABLE
<Vehicle equipped with monitor coupler>
STEPACTIONYESNO
11) Make sure that diagnosis switch
terminal in monitor coupler is not
grounded by service wire. See Fig. 1.
2) Check malfunction indicator lamp
while ignition switch is ON (but without
starting engine). See Fig. 2.
Dose malfunction indicator lamp flash?Go to Step 3.
If malfunction indicator lamp
remains ON, go to Step 2.

If malfunction indicator lamp
remains OFF, go to
“MALFUNCTION INDICATOR
LAMP CHECK” in Section 6.
21) Using service wire, ground diagnosis
switch terminal in monitor coupler.
See Fig. 3.
Dose malfunction indicator lamp flash?Immobilizer control
system is in good
condition.Go to “MALFUNCTION
INDICATOR LAMP CHECK” in
Section 6.
3Dose malfunction indicator lamp flash as
Fig. 4?Go to Step 4.Go to “MALFUNCTION
INDICATOR LAMP CHECK” in
Section 6.
41) Check DTC stored in Immobilizer
Control Module referring to
“DIAGNOSTIC TROUBLE CODE
CHECK (IMMOBILIZER CONTROL
MODULE)” in this section.
Is there any DTC(s)?Go to flow table for
DTC No.Go to Step 5.
51) Check DTC stored in ECM referring to
“DIAGNOSTIC TROUBLE CODE
CHECK (ECM)” in this section.
Is there any DTC(s)?Go to flow table for
DTC No.Substitute a known-good ECM
and recheck.
NOTE:
After replacing with a known-
good ECM, register ECM /
Immobilizer Control Module
code in ECM by performing
procedure described in
“Procedure after ECM
Replacement” section.