2004 SUZUKI GRAND VITARA dlc

YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-79
09925-37810
Oil pressure gauge09927-56010
Gear stopper
(only for G16 / J20)09931-76030
16 / 14 pin DLC
(OBD-II adapter) cable
09931-76011
SUZUKI scan tool (Tech 1A) kit1. Storage case
2. Operator's manual
3. Tech 1A
4. DLC cable
5. Test lead / probe
6. Power source cable
7. DLC cable adapter
8. Self±test adapterMass storage cartridge
REQUIRED SERVICE MATERIALS
MATERIALRECOMMENDED
SUZUKI PRODUCTUSE
A / T fluidAn equivalent of DEXRON-III
Automatic transmission

Parts lubrication when installing
Lithium greaseSUZUKI SUPER GREASE A
(99000±25010)
Cable ends
SealantSUZUKI BOND NO.1215
(99000-31110)
Flywheel bolts
SPECIAL TOOLS

YH4
GRAND
VITARA
8G
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-1
GENERAL DESCRIPTION8G- 2 . . . . . . . . . . . . . .
Ignition Key 8G- 3. . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Antenna 8G- 3. . . . . . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Module 8G- 4. . . . . . . . . . . .
ECM/PCM 8G- 4. . . . . . . . . . . . . . . . . . . . . . . . . . .
On-Board Diagnostic System
(Self-Diagnosis Function) 8G- 4. . . . . . . . . . . . .
DIAGNOSIS8G- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in Diagnosing Troubles 8G- 6. . . . .
Diagnostic Flow Table with monitor coupler> 8G- 9. . . . . . . . . . . . . . . .
Diagnostic Flow Table equipped with monitor coupler> 8G-10. . . . . . .
Diagnostic Trouble Code Check
(Immobilizer Control Module) 8G-11. . . . . . . .
Diagnostic Trouble Code Check
(ECM / PCM) 8G-11. . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code Table 8G-13. . . . . . . . .
TABLE A DTC is not Output
from Diagnostic Output Terminal 8G-14. . . . . . .
TABLE B Immobilizer Indicator Lamp
Check (Immobilizer Indicator Lamp
does not Light at Ignition Switch ON) 8G-15. . .
TABLE C Immobilizer Indicator Lamp
Check (Immobilizer Indicator Lamp
Remains on after Engine Starts) 8G-16. . . . . . .
DTC11 Transponder Code Not Matched8G-17 . .
DTC31 Transponder Code Not
Registered 8G-17. . . . . . . . . . . . . . . . . . . . . . . . .
DTC12 Fault in Immobilizer
Control Module 8G-17. . . . . . . . . . . . . . . . . . . . . .
DTC13 No Transponder Code Transmitted
or Coil Antenna Opened/Shorted 8G-18. . . . . . DTC21 ECM/Immobilizer Control Module
Code Not Matched (Immobilizer Control
Module Side) 8G-20. . . . . . . . . . . . . . . . . . . . . . .
DTC81 (P1623) ECM/Immobilizer
Control Module Code Not Matched
(ECM/PCM Side) 8G-20. . . . . . . . . . . . . . . . . . . .
DTC84 (P1620) ECM/Immobilizer Control
Module Code Not Registered 8G-20. . . . . . . . .
DTC22 Ignition Switch Circuit Open/Short8G-21 . .
DTC23 No ECM/Immobilizer Control
Module Code Transmitted from ECM/
PCM or DLC Circuit Opened/Shorted8G-22 . . . .
DTC83 (P1621) No ECM/Immobilizer
Control Module Code Transmitted from
Immobilizer Control Module or DLC
Circuit Opened/Shorted 8G-22. . . . . . . . . . . . . .
DTC82 (P1622) Fault in ECM/PCM 8G-23. . . . .
Inspection of ECM/PCM, Immobilizer
Control Module and Its Circuit 8G-24. . . . . . . . .
Voltage Check 8G-24. . . . . . . . . . . . . . . . . . . . .
Resistance Check 8G-25. . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE8G-26 . . . . . . . . . . . . . . . .
Precautions in Handling Immobilizer
Control System 8G-26. . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Module 8G-27. . . . . . . . . . . .
Coil Antenna 8G-27. . . . . . . . . . . . . . . . . . . . . . . . .
HOW TO REGISTER IGNITION KEY8G-28 . . . . .
PROCEDURE AFTER IMMOBILIZER
CONTROL MODULE REPLACEMENT8G-29 . .
PROCEDURE AFTER ECM/PCM
REPLACEMENT8G-30 . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS8G-30 . . . . . . . . . . . . . . . . . . . . . .
SECTION 8G
IMMOBILIZER CONTROL SYSTEM
(IF EQUIPPED)
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 ªAir Bag System Components and Wiring Location Viewº under ªGener-
al Descriptionº 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 ªService Precau-
tionsº under ªOn-Vehicle Serviceº 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
ªLOCKº 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).
CONTENTS

YH4
GRAND
VITARA
1. Coil antenna
2. Ignition key
3. Immobilizer control module
4. Data link connector (DLC)
5. Immobilizer diagnostic coupler Ignition key
Transponder
code
Immobilizer
Control
ModuleECM/
PCM
8G-2 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
GENERAL DESCRIPTION
The immobilizer control system designed to prevent vehicle burglar consists of following components.

Engine control module (ECM) / Powertrain control module (PCM)

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 / PCM 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 / PCM
will stop operation of the injector and ignition of spark plug.

YH4
GRAND
VITARA
8G-12 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
EXAMPLE: When serial data link wire is defective (Code No.83)
ON
OFFMalfunction
indicator lamp
Code No.83 Code No.83 Code No.83
Time (sec.)
1. Data link connector (DLC)
3) After completing the check, turn ignition switch OFF and discon-
nect service wire from monitor coupler.
[Using SUZUKI scan tool]
1) Turn ignition switch OFF.
2) After setting cartridge to Suzuki scan tool, connect it to data link
connector (DLC) located on underside of instrument panel at
driver's seat side.
Special Tool
(A): 09931-76011 (Suzuki scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 12 pin DLC adapter)
3) Turn ignition switch ON.
4) Read DTC according to instructions displayed on Suzuki scan
tool and print it or write it down. Refer to Suzuki scan tool opera-
tor's manual for further details.
NOTE:

When reading DTC stored in ECM / PCM using Suzuki scan
tool, select ªECMº from the applications menu and ªSU-
ZUKI modeº from the communication mode menu dis-
played on Suzuki scan tool.

If ECM / PCM detects a trouble in both electric fuel injec-
tion system and immobilizer control system, Suzuki scan
tool indicates trouble codes of both systems using Suzu-
ki mode of ECM application.
If communication between Suzuki scan tool and ECM / PCM is
not possible, check if Suzuki scan tool is communicable by con-
necting it to ECM / PCM in another vehicle. If communication is
possible in this case, Suzuki scan tool is in good condition. Then
check data link connector and serial data line (circuit) in the ve-
hicle with which communication was not possible.
5) After completing the check, turn ignition switch OFF and discon-
nect Suzuki scan tool from data link connector (DLC).

YH4
GRAND
VITARA
8G-22 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
A812
To SDM (if equipped with AIRBAG)
To data link connector (DLC)1. Immobilizer Control Module
2. ECM / PCM (j) (i)
(i)
(i)
DTC23 NO ECM/IMMOBILIZER CONTROL MODULE CODE TRANSMITTED
FROM ECM/PCM OR DLC CIRCUIT OPENED/SHORTED
DTC83 NO ECM/IMMOBILIZER CONTROL MODULE CODE TRANSMITTED
(P1621) FROM IMMOBILIZER CONTROL MODULE OR DLC CIRCUIT
OPENED/SHORTED
DESCRIPTION
When the ignition switch is ON, Immobilizer Control Module requests ECM / PCM and ECM / PCM requests Immobi-
lizer Control Module to transmit ECM/Immobilizer Control Module code. If ECM/Immobilizer Control Module code
is not transmitted from ECM / PCM or Immobilizer Control Module, Immobilizer Control Module sets DTC23 and
ECM / PCM sets DTC83 (P1621).
INSPECTION:
STEPACTIONYESNO
1Check voltage between
Immobilizer Control Mod-
ule coupler terminal A8
and body ground with igni-
tion switch turned ON.
Is it 4 ± 5V?Go to Step 2.ª(i)º or ª(j)º wire
short.
21) Disconnect ECM /
PCM coupler with igni-
tion switch turned
OFF.
2) Is there continuity be-
tween Immobilizer
Control Module cou-
pler terminal A8 and
Data link connector
terminal of ECM / PCM
coupler? (For posi-
tions of Data link con-
nector terminal of
ECM / PCM coupler,
refer to Section 6E1 or
6E2.)Poor A8 connection (Immobilizer Control Module) or
Poor Data link connector terminal connection (ECM /
PCM). If connections are OK, substitute a known-good
ECM / PCM or Immobilizer Control Module and re-
check.
NOTE :

After replacing with a known-good ECM / PCM,
register ECM/Immobilizer Control Module code
in ECM / PCM by performing procedure de-
scribed in ªProcedure after ECM / PCM Replace-
mentº section.

After replacing with a known-good Immobilizer
Control Module, register ECM/Immobilizer Control
Module code in ECM / PCM and Transponder code
and ECM/Immobilizer Control Module code in Im-
mobilizer Control Module by performing proce-
dure described in ªProcedure after Immobilizer
Control Module Replacementº section.ª(i)º or ª(j)º wire be-
tween Immobilizer
Control Module and
ECM / PCM open.
Fig. 1 for step 1
1
A8
1. Immobilizer Control Module
1. Immobilizer Control Module coupler disconnected1
A8Connect to Data link connector terminal
of ECM / PCM coupler disconnected
Fig. 2 for step 2

YH4
GRAND
VITARA
8G-28 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
1
1. Ignition key with built-in transponder 1. Data link connector (DLC)
HOW TO REGISTER IGNITION KEY
Register the ignition key with a built-in transponder in Immobilizer
Control Module by using the following procedure.
1) Prepare Suzuki scan tool (TECH 1A kit and cartridge for immobi-
lizer control system).
2) With ignition switch OFF, connect Suzuki scan tool to data link
connector (DLC) located on underside of instrument panel at
driver's seat side.
Special Tool
(A): 09931-76011 (Tech 1A)
(B): Immobilizer cartridge
(C): 09931-76030 (16 / 14-pin DLC cable)
NOTE:
For operation procedure of Suzuki scan tool, refer to Suzuki
scan tool operator's manual.
3) Prepare ignition key with a built-in transponder. And then turn
ignition switch ON by using it.
4) Number of Transponder codes for ignition key with a built-in
transponder that can be registered in Immobilizer Control Mod-
ule is limited to 4. If needed, clear all Transponder codes for igni-
tion key with a built-in transponder that have been registered in
Immobilizer Control Module by executing the ªCLR. TRANS
COD (CLEAR TP CODE)º command in the SELECT MODE
menu by using Suzuki scan tool.
NOTE:
When ªCLR. TRANS COD (CLEAR TP CODE)º command is
executed with the malfunction indicator lamp (the lamp for
vehicles equipped with the monitor coupler) ON or the im-
mobilizer indicator lamp (the lamp for vehicle not equipped
with the monitor coupler) ON, it remains ON even after
execution of that command is over. It will start flashing
when the ignition switch is turned OFF once and then
turned ON after some seconds.
5) Using Suzuki scan tool, register Transponder code in Immobiliz-
er Control Module by executing ªENT. TRANS COD (ENT. TP
CODE)º command in SELECT MODE menu.
6) [Vehicle equipped with monitor coupler]
Make sure that malfunction indicator lamp lights when ignition
switch is turned OFF once and then ON.
[Vehicle not equipped with monitor coupler]
Make sure that immobilizer indicator lamp lights when ignition
switch is turned OFF once and then ON.

YH4
GRAND
VITARA
8G-30 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
09931-76030
16 / 14 pin DLC cable
09931-76011
Suzuki scan tool (Tech 1A kit)1. Storage case
2. Operator's manual
3. Tech 1A
4. DLC cable
(14 / 26 pin, 09931-76040)
5. Test lead/probe
6. Power source cable
7. DLC cable adapter
8. Self-test adapter
Immobilizer cartridge of
version 1.1 or more
NOTE:
Use this cable only with im-
mobilizer cartridge of ver-
sion 1.1 or more.
Use of this cable with 96
immobilizer cartridge will
disable 96 immobilizer car-
tridge from operating prop-
erly.
Mass storage cartridge of
version1.5 or more
PROCEDURE AFTER ECM / PCM
REPLACEMENT
When ECM / PCM was replaced, including when replaced because
rechecking by using a known-good ECM / PCM was necessary dur-
ing trouble diagnosis, register ECM/Immobilizer Control Module
code in ECM / PCM by performing following procedure.
1) Perform Steps 1) and 2) described in ªHow to register ignition
keyº section. And then turn ignition switch ON.
2) Using TECH1, register ECM/Immobilizer Control Module code in
ECM / PCM by executing ªRECORD ECU (RECORD ECM / PCM/
ICM)º command in SELECT MODE menu.
NOTE:
For operation procedure of Suzuki scan tool, refer to TECH1
operator's manual.
3) [Vehicle equipped with monitor coupler]
Make sure that malfunction indicator lamp lights when ignition
switch is turned OFF once and then ON.
[Vehicle not equipped with monitor coupler]
Make sure that immobilizer indicator lamp lights when ignition
switch is turned OFF once and then ON.
SPECIAL TOOLS

YH4
GRAND
VITARA
10B-4 AIR BAG SYSTEM
1. Air bag harness
2. ªAIR BAGº fuse box
3. ªAIR BAGº monitor coupler
4. DLC
5. Contact coil assembly
6. Driver air bag (inflator) module
7. Passenger air bag (inflator) module
8. SDM
9. Seat belt pretensioner
(retractor assembly) (if equipped)
10. Pretensioner harness (if equipped)
11. Ground for air bag systemCONNECTOR ªAº
CONNECTOR ªCº, ªDº
CONNECTOR ªBº
CONNECTOR ªEº
CONNECTOR ªHº
CONNECTOR ªFº
CONNECTOR ªGº
SYSTEM COMPONENTS AND WIRING LOCATION VIEW AND CONNECTORS