Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 542

10C-29 Immobilizer Control System: For Petrol Engine Model

Special Tools and Equipment

Special Tool

S6JB0AA318001

SUZUKI scan tool
—
This kit includes following
items. 1. Tech 2, 2. PCMCIA
card, 3. DLC cable, 4. SAE
16/19 adapter, 5. Cigarette
cable, 6. DLC loop back
adapter, 7. Battery power
cable, 8. RS232 cable, 9.
RS232 adapter, 10. RS232
loop back connector, 11.
Storage case, 12. ) / )

Immobilizer Control System: For Diesel Engine Model 10C-30

For Diesel Engine Model

Precautions

Precautions in Diagnosing Troubles

S6JB0AA320001

• Before confirming the diagnostic trouble code (DTC),

do not disconnect connector from immobilizer control
module (ICM), battery cable from battery, ground wire
harness, or main fuse. Such disconnection will erase
DTC stored in ICM.

• DTC stored in ICM memory can be checked as well

as cleared by using SUZUKI scan tool. Before using
SUZUKI scan tool, read its operator’s manual
carefully to know how to use it and what functions are
available.

• Be sure to read “Precautions for Electrical Circuit

Service in Section 00” before inspection.

• Communication of ECM, BCM, combination meter,

ABS/ESP

®

control module, immobilizer control

module, 4WD control module, keyless start control
module (keyless start model), steering angle sensor
(ESP

®

model) and DLC is established by CAN

(Computer Area Network). Therefore, handle CAN
communication lines with care referring to “Precaution
for CAN Communication System in Section 00”. For
more detail of CAN communication, refer to “CAN
Communication System Description: For Diesel
Engine Model in Section 1A”.

Precaution in Replacing Immobilizer Control
Module (ICM)

S6JB0AA320004

After ICM is replaced with a new one or a used one, the
engine cannot be started unless the transponder code in
the transponder which is built in the ignition key is
registered in ICM and the key verification code stored in
ICM is registered in the immobilizer control system. For
the registration procedure, refer to “Procedure after
Immobilizer Control Module (ICM) Replacement: For
Diesel Engine Model”.

Precaution in Replacing ECM

S6JB0AA320005

After ECM is replaced with a new one or a used one, the
engine cannot be started unless the key verification code
stored in ECM is registered in the immobilizer control
system. For the registration procedure, refer to
“Procedure after Immobilizer Control Module (ICM)
Replacement: For Diesel Engine Model”.

Precaution in Replacing Ignition Key

S6JB0AA320006

To register ignition key in case of replacing key(s) and/or
making spare key(s), the transponder code in the ignition
key is registered with ICM. Or the engine can not be
started up. For the registration procedure, refer to
“Registration of the Ignition Key: For Diesel Engine
Model”.

Precautions in Handling Immobilizer Control
System

S6JB0AA320003

• Do not turn ON ignition switch with ignition key in

contact with another one or quite close to another
one. Or, the immobilizer control system may detect
some abnormal condition and prevent the engine from
starting.

• Do not turn ON ignition switch by using ignition key

with any type of metal (1) wrapped its grip or in
contact with it. Or, the immobilizer control system may
detect some abnormal condition and prevent the
engine from starting.

I3RH0AA30001-01

1

I3RH0AA30002-01

10C-31 Immobilizer Control System: For Diesel Engine Model

• Do not leave ignition key in a place where

temperature is high. High temperature may cause
damage to the transponder built in the ignition key.

• Do not turn ignition switch to ON position by bringing

radio antenna close to coil antenna. Or, the
immobilizer control system may detect some
abnormal condition and prevent the engine from
starting.

General Description

Immobilizer Control System Introduction

S6JB0AA321001

The immobilizer control system is an anti-theft device
that immobilizes the vehicle. It stops the engine from
working and prevents the vehicle from being stolen. It
mainly consists of the following components. For the
immobilizer control system components location
referring to “Immobilizer Control System Components
Location: For Diesel Engine Model”.
• Engine Control Module (ECM)
• Immobilizer control module (ICM) with the built-in coil

antenna

• Ignition key with the built-in transponder
A code called the transponder code is memorized in the
transponder. And, the code is registered with ECM.
Basically, when the ignition switch is turned ON, ECM
reads the code by the coil antenna. When that code
agrees with the ICM registered code, ICM compares the
secret code with ECM. When their secret codes agree,
the engine can be started.If there is no agreement
between transponder codes of ICM and ignition key or
between secret codes of ICM and ECM, ECM stops fuel
injection to prevent the engine from starting and turn the
injection warning light ON and OFF using CAN
communication line.

On-Board Diagnostic System Description (Self-
diagnosis Function)

S6JB0AA321003

ICM and ECM diagnoses if there is any trouble with the
immobilizer control system. The diagnostic information is
stored as the diagnostic trouble code (DTC) in ICM. To
read the diagnostic information, use SUZUKI scan tool
referring to “Diagnostic Trouble Code (DTC) Check: For
Diesel Engine Model”.
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 there is
any trouble with the immobilizer control system or not by
either lighting ON or flashing ON and OFF the injection
warning light.

Injection warning light lights ON:
No trouble exists in the immobilizer control system.
(After starting up the engine, the lamp turns OFF.)

Injection warning light flashes ON and OFF:
There is some trouble in the immobilizer control system
or in the keyless start system. Its diagnostic information
is stored in ICM.

I3RH0AA30003-01

I3RH0AA30004-01

Immobilizer Control System: For Diesel Engine Model 10C-32

Schematic and Routing Diagram

Immobilizer Control System Wiring Circuit Diagram

S6JB0AA322001

NOTE
For more details about power supply circuit, ground wire circuit and each circuit for ECM, BCM, ABS
control module, ESP

®

control module, keyless start control module (keyless start model) and

combination meter, refer to “System Circuit Diagram in Section 9A”.

12V

12V

WHT/RED

WHT/BLU

12V

12V

WHT

RED

BLK/HWT

BLU/BLK

PPL/WHT

BLK

8

WHT

RED

WHT/RED

WHT/BLU

RED

WHT

G28-8 G28-10

WHT

G31-1

G31-3

G24-3

G24-4

G24-5 G24-6

G24-7

G24-8

1

2

3

4

5

6

7

9

11

10

12

13

14

1

2

3

4

5

6

7

8

15

2

BLK/RED

G24-1

G24-2

WHT

2

RED

G31-1

G31-1

G31-32

G31-32

BRN/PPL

ORN

17

16

18

19

20

21

WHT

RED

WHT

RED

WHT

RED

WHT

RED

5V

5V

5V

BRN

G31-31

G31-31

5V

WHT

RED

G31-19

G31-18

I6JB0AA32002-01

1. Battery

8. ABS/ESP

®

control module

15. Immobilizer control module (ICM) connector

(harness side view)

2. Fuse

9. Junction connector

16. Keyless start control module (if equipped)

3. Ignition switch

10. Injection warning light

17. Steering lock unit (keyless start model)

4. Junction block assembly

11. Combination meter

18. To 4WD control module

5. Immobilizer control module (ICM)

12. From fuse

19. To steering angle sensor (ESP

®

model)

6. Data link connector (DLC)

13. BCM

20. To DLC

7. ECM

14. To ECM, TCM, BCM, ABS control module or ESP

®

control

module, SDM and 4WD control module.

21. To BCM