2000 SUZUKI SWIFT check oil

8G-2 IMMOBILIZER CONTROL SYSTEM
PROCEDURE AFTER IMMOBILIZER CONTROL
MODULE REPLACEMENT ........................... 8G-24
PROCEDURE AFTER ECM
REPLACEMENT............................................ 8G-25SPECIAL TOOL ............................................ 8G-25

GENERAL DESCRIPTION
The immobilizer control system designed to prevent vehicle burglar consists of following components.
Engine control module (ECM)
Immobilizer control module (1) with coil antenna
Ignition key (2) with built-in transponder
Operation of this system is as follows.
i) 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.
ii) Immobilizer Control Module compares the Transponder code read in Step (i) and that registered in Immo-
bilizer Control Module and checks if they match.
iii) When it is confirmed that two Transponder codes match each other as described above, Immobilizer Con-
trol Module and ECM check if ECM/Immobilizer Control Module codes registered in them respectively
match.
iv) Only when it is confirmed that ECM/Immobilizer Control Module codes match, the engine starts running. If
Transponder codes in Step (ii) or ECM/Immobilizer Control Module codes in Step (iii) do not match, ECM
will stop operation of the injector and ignition of spark plug.
3. Data link connector (DLC)
4. Immobilizer indicator lamp
5. ECM

8G-4 IMMOBILIZER CONTROL SYSTEM
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION)
Immobilizer Control Module and ECM diagnose troubles which
may occur in the area including the following parts when the igni-
tion switch is ON.
ECM :
ECM/Immobilizer Control Module code
Serial data link circuit
ECM
Immobilizer Control Module :
Transponder code
Coil antenna
ECM/Immobilizer Control Module code
Serial data link circuit
Immobilizer Control Module
Ignition signal
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.
When ECM and Immobilizer Control Module detects a trouble, it
stores DTC corresponding to the exact trouble area in ECM and
Immobilizer 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
CONTROL MODULE)” and “DIAGNOSTIC TROUBLE CODE
CHECK(ECM)” in this section. NOTE:
As soon as the ignition switch is turned ON, ECM and
Immobilizer 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 diagnosis result is “abnormal”, it
immediately changes to flashing but if the result is “nor-
mal”, it remains ON. Diagnosis takes about 3 seconds at
maximum.

IMMOBILIZER CONTROL SYSTEM 8G-5
DIAGNOSIS
PRECAUTIONS IN DIAGNOSING TROUBLES
PRECAUTIONS IN IDENTIFYING DIAGNOSTIC TROUBLE CODE
ECM
Before identifying diagnostic trouble code indicated through Suzuki 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 emission control system and immobilizer control
system stored in memory of ECM.
Take a note of diagnostic trouble code indicated first.
IMMOBILIZER CONTROL MODULE
Take a note of diagnostic trouble code indicated first.
INTERMITTENT TROUBLES
There is case where Suzuki scan tool 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 unneces-
sarily. To prevent such accident, be sure to follow instructions given below when checking by using “Diag-
nostic 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, substi-
tute a known-good ECM and recheck.
–When trouble can not be identified but 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 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.

IMMOBILIZER CONTROL SYSTEM 8G-15
DTC13 NO TRANSPONDER CODE TRANSMITTED OR COIL ANTENNA
OPENED/SHORTED
DESCRIPTION
Immobilizer Control Module energizes the coil antenna when the ignition switch is ON and reads Transponder
code from the ignition key. When Immobilizer Control Module cannot read Transponder code from the ignition
key even when the coil antenna is energized, this DTC is set.
INSPECTION
Fig. 1 for Step 1
1. Main fuse 2. Main relay 3. Immobilizer Control Module 4. Coil antenna 5. To ECM
BLK/RED
BLK/YEL
G06-4
2
3
4 5
1
Step Action Yes No
1 Check that knob shape and color for igni-
tion key are as shown below.
Knob color : Dark gray
Knob shape : the same as shown in
Fig.1.
Is it the original one?Substitute a known-good Immobilizer
Control Module and recheck.
See NOTE below.Replace ignition
key with original
one and follow
“Diagnostic Flow
Table” again.
NOTE:
After replacing with a known-good Immobilizer Control Module, register ECM/Immobilizer Control
Module code in ECM and Transponder code and ECM/Immobilizer Control Module code in Immobilizer
Control Module by performing procedure described in “PROCEDURE AFTER IMMOBILIZER CON-
TROL MODULE REPLACEMENT” in this section.

AIR BAG SYSTEM 10B-15
TABLE A - “AIR BAG” WARNING LAMP COMES ON STEADY
TABLE B - “AIR BAG” WARNING LAMP DOES NOT COME ON
TABLE C - “AIR BAG” WARNING LAMP FLASHES
TABLE D - “AIR BAG” WARNING LAMP CANNOT INDICATE FLASHING PAT-
TERN OF DTC
WIRING DIAGRAM
1. From main fuse 5.“AIR BAG” fuse 9. To ECM, TCM (if equipped) and ABS control
module (if equipped)
2. Ignition switch 6. Connection detection pin 10.“AIR BAG” monitor coupler
3.“IG·COIL METER” fuse 7. SDM 11. Ground for air bag system
4.“AIR BAG” warning lamp in combination meter 8. To DLC [A]: Air bag harness
1
2
34 BLK/YEL
BLK/YELBLK/WHTYEL/BLKYEL/BLK
6
REDRED
BLU
BLU
5
8
9
10
11
PPL
BLK
“Q04”“Q06”
Q06-2
Q06-4
Q06-14
Q06-15
Q06-17L1
L2
IG
SDL
DNS
GNDLA
7
[A]
12V
5V
“G39”“Q02”
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-29
DTC B1021 – DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH
DTC B1022 – DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE LOW
DTC B1024 – DRIVER AIR BAG INITIATOR CIRCUIT SHORT TO GROUND
DTC B1025 – DRIVER AIR BAG INITIATOR CIRCUIT SHORT TO POWER CIR-
CUIT
WIRING DIAGRAM
DTC WILL SET WHEN
DTC B1021 :
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and con-
nector terminal contact is above a specified value for specified time.
DTC B1022 :
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and con-
nector terminal contact is below a specified value for specified time.
DTC B1024 :
The voltage measured at driver air bag initiator circuit is below a specified value for specified time.
DTC B1025 :
The voltage measured at driver air bag initiator circuit is above a specified value for specified time.
TABLE TEST DESCRIPTION
DTC B1021, B1022, B1024 and B1025 :
STEP 1 : Check whether malfunction is in contact coil and driver air bag (inflator) module or the others.
STEP 2 : Check driver air bag (inflator) module initiator circuit in air bag harness.
STEP 3 : Check whether malfunction is in contact coil or driver air bag (inflator) module.
[A] : Shorting bar 2. Ignition switch 5. Contact coil assembly
[B] : Airbag harness 3.“AIR BAG” fuse 6. Driver air bag (inflator) module
1. From main fuse 4. SDM 7. Ground for air bag system
1
2RED BLK/YELRED
3
7
BLK“Q06”
Q06-4
Q06-17IG
GND4
“G39”“Q02”
[A]
[B]
GRN/RED
GRN Q06-10
Q06-9 D- D+“Q01”
“Q06”
“Q08”6
5
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to flow
table.
When measurement of resistance or voltage is required in this table, use a tester along with a correct termi-
nal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNECTIONS in
this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace the wire
harness, connector and terminal as an assembly.

10B-30 AIR BAG SYSTEM
DIAGNOSTIC FLOW TABLE
DTC B1021 :
Fig. for STEP 1 and 2
Fig. for STEP 2Step Action Yes No
1 1) With ignition switch OFF, disconnect contact coil con-
nector located near the base of the steering column.
2) Check proper connection to contact coil at terminals
in “Q01” connector.
3) If OK then connect Special Tool (B) to contact coil
connector disconnected at step 1).
With ignition switch ON, is DTC B1021 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at terminals “Q06-9”
and “Q06-10”.
3) If OK then measure resistance between “Q06-9” and
“Q06-10” terminals with connected Special Tool (B).
Is resistance 4.5 Ω or less?Substitute a known-
good SDM and
recheck.Repair high resis-
tance or open in
“GRN” or “GRN/RED”
wire circuit.
3 1) With ignition switch OFF, disconnect Special Tool (B)
then reconnect contact coil connector located near
the base of the steering column.
2) Remove driver air bag (inflator) module from steering
wheel (Refer to DRIVER AIR BAG (INFLATOR)
MODULE in Section 3C).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q08” connector.
4) If OK then connect Special Tool (B) to “Q08” connec-
tor.
With ignition switch ON, is DTC B1021 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CON-
TACT COIL AND
COMBINATION
SWITCH ASSEM-
BLY in Section 3C).Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3C).
BASE OF
COLUMN
“Q01”

AIR BAG SYSTEM 10B-31
Fig. for STEP 3
Special tool
(A) : 09932-76010
(B) : 09932-75010
DTC B1022 :
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Step Action Yes No
1 1) With ignition switch OFF, disconnect con-
tact coil connector located near the base of
the steering column.
2) Check proper connection to contact coil at
terminals in “Q01” connector.
3) If OK then connect Special Tool (B) to con-
tact coil connector disconnected at step 1).
With ignition switch ON, is DTC B1022 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at termi-
nals “Q06-9” and “Q06-10”.
3) If OK then measure resistance between
“Q06-9” and “Q06-10” terminals with con-
nected Special Tool (B).
Is resistance 1.7 Ω or more?Substitute a known-good
SDM and recheck.Repair short from “GRN”
wire circuit to “GRN/RED”
wire circuit or from “GRN”
or “GRN/RED” wire cir-
cuit to other wire circuit.
3 1) With ignition switch OFF, disconnect Spe-
cial Tool (B) then reconnect contact coil
connector located near the base of the
steering column.
2) Remove driver air bag (inflator) module
from steering wheel (Refer to DRIVER AIR
BAG (INFLATOR) MODULE in Section 3C).
3) Check proper connection to driver air bag
(inflator) module at terminals in “Q08” con-
nector.
4) If OK then connect Special Tool (B) to “Q08”
connector.
With ignition switch ON, is DTC B1022 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to COM-
BINATION SWITCH/
CONTACT COIL AND
COMBINATION SWITCH
ASSEMBLY in Section
3C).Ignition switch OFF.
Replace driver air bag
(inflator) module (Refer to
DRIVER AIR BAG
(INFLATOR) MODULE in
Section 3C).