Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 522

10-ii Table of Contents

Precautions in Diagnosing Troubles .................10C-1
Precaution in Replacing ECM ...........................10C-1
Precautions in Handling Immobilizer Control 

System ............................................................10C-1

General Description ...........................................10C-2

Immobilizer Control System Introduction ..........10C-2
On-Board Diagnostic System Description 

(Self-diagnosis Function) ................................10C-2

Schematic and Routing Diagram......................10C-3

Immobilizer Control System Wiring Circuit 

Diagram ..........................................................10C-3

Component Location .........................................10C-4

Immobilizer Control System Components 

Location ..........................................................10C-4

Diagnostic Information and Procedures..........10C-5

Immobilizer Control System Check ...................10C-5
Diagnostic Trouble Code (DTC) Check.............10C-6
Diagnostic Trouble Code (DTC) Clearance ......10C-6
Diagnostic Trouble Code (DTC) Table..............10C-6
Scan Tool Data .................................................10C-7
Immobilizer Indicator Lamp Does Not Come 

ON with Ignition Switch ON and Engine Stop ..10C-8

Immobilizer Indicator Lamp Remains ON after 

Engine Start ....................................................10C-9

DTC P1614: Transponder Response Error.......10C-9
DTC P1615: Steering Lock Unit 

Communication Error (for Vehicle with 
Keyless Start System)...................................10C-11

DTC P1616: Unregistered Keyless Start 

Control Module (for Vehicle with Keyless 
Start System) ................................................10C-14

DTC P1618: Keyless Start Control Module 

CAN Communication Error (for Vehicle with 
Keyless Start System)...................................10C-15

DTC P1621: Immobilizer Communication 

Line Error ......................................................10C-17

DTC P1622: EEPROM Error...........................10C-20
DTC P1623: Unregistered Transponder .........10C-21
DTC P1625: Immobilizer Antenna Error..........10C-22
DTC P1636: Immobilizer Information 

Registration Failure .......................................10C-23

DTC P1638: Immobilizer Information 

Mismatched...................................................10C-24

Inspection of Immobilizer Control Module 

(ICM) and Its Circuit ......................................10C-26

Repair Instructions ..........................................10C-28

Immobilizer Control Module (ICM) Removal 

and Installation ..............................................10C-28

Registration of the Ignition Key .......................10C-28
Procedure after ECM Replacement ................10C-28

Special Tools and Equipment .........................10C-29

Special Tool ....................................................10C-29

For Diesel Engine Model ....................................10C-30

Precautions.......................................................10C-30

Precautions in Diagnosing Troubles ...............10C-30
Precaution in Replacing Immobilizer Control 

Module (ICM) ................................................10C-30

Precaution in Replacing ECM .........................10C-30
Precaution in Replacing Ignition Key ..............10C-30

Precautions in Handling Immobilizer Control 

System ..........................................................10C-30

General Description .........................................10C-31

Immobilizer Control System Introduction ........10C-31
On-Board Diagnostic System Description 

(Self-diagnosis Function) ..............................10C-31

Schematic and Routing Diagram ....................10C-32

Immobilizer Control System Wiring Circuit 

Diagram.........................................................10C-32

Component Location .......................................10C-33

Immobilizer Control System Components 

Location.........................................................10C-33

Diagnostic Information and Procedures ........10C-34

Immobilizer Control System Check .................10C-34
Diagnostic Trouble Code (DTC) Check...........10C-34
Diagnostic Trouble Code (DTC) Clearance ....10C-35
Diagnostic Trouble Code (DTC) Table............10C-35
Scan Tool Data ...............................................10C-36
Injection Warning Light Does Not Come ON 

with Ignition Switch ON and Engine Stop......10C-37

Injection Warning Light Remains ON after 

Engine Start ..................................................10C-38

DTC B1701: Transponder Code Error 1/DTC 

B1710: Transponder Code Error 3................10C-38

DTC B1702: ECM Communication Error 1 .....10C-39
DTC B1703: Unregistered Transponder .........10C-40
DTC B1704: Transponder Code Error 2 .........10C-41
DTC B1705: Transponder Response Error.....10C-42
DTC B1706: Immobilizer Antenna Error..........10C-43
DTC B1707: IMM EEPROM Error...................10C-43
DTC B1708: ECM Code Error.........................10C-44
DTC B1709: ECM Communication Error 2 .....10C-45
DTC B1711: ECM EEPROM Error..................10C-46
DTC B1712: Immobilizer Communication 

Error ..............................................................10C-47

DTC B1713: Immobilizer Code Error ..............10C-49
DTC B1714: Unregistered Code .....................10C-50
DTC B1716: Keyless Start Control Module 

CAN Communication Error............................10C-50

DTC B1717: Unregistered Keyless Start 

Control Module..............................................10C-51

DTC B1718: Steering Lock Unit 

Communication Error ....................................10C-52

Inspection of Immobilizer Control Module 

(ICM) and Its Circuit ......................................10C-53

Repair Instructions ..........................................10C-56

Immobilizer Control Module (ICM) Removal 

and Installation ..............................................10C-56

Registration of the Ignition Key .......................10C-56
Procedure after ECM Replacement ................10C-56
Procedure after Immobilizer Control Module 

(ICM) Replacement .......................................10C-56

Special Tools and Equipment .........................10C-57

Special Tool ....................................................10C-57

Keyless Start System ............................ 10E-1

Precautions.........................................................10E-1

Precautions in Diagnosing Troubles .................10E-1

General Description ...........................................10E-2

Table of Contents 10-iii

Keyless Start System Description ..................... 10E-2
Parts and Functions ..........................................10E-4
Keyless Engine Start Function ..........................10E-5
Door Lock Function of Keyless Start System.... 10E-6
Operation Area of Remote Controller................10E-7
Alarm Function.................................................. 10E-8
CAN Communication System Description.........10E-8

Schematic and Routing Diagram......................10E-9

Keyless Start System Electric Wiring Circuit 

Diagram ..........................................................10E-9

Diagnostic Information and Procedures........ 10E-10

Self-Diagnosis Function .................................. 10E-10
Keyless Start System Diagnosis Introduction . 10E-10
Keyless Start System Check........................... 10E-10
Customer Questionnaire (Example)................ 10E-11
Key Indicator Light Check ............................... 10E-11
DTC Check ..................................................... 10E-12
DTC Table....................................................... 10E-13
DTC Clearance ............................................... 10E-13
Keyless Start System Symptom Diagnosis..... 10E-14
Keyless Start System Operation Inspection.... 10E-15
Door Lock Operation Check (Keyless Start 

System)......................................................... 10E-15

Inspection of Keyless Start Control Module 

and Its Circuits .............................................. 10E-16

No DTC Detection After Performing DTC 

Check............................................................ 10E-21

Key Indicator Light Circuit Check (Key 

Indicator Light Doesn’t Light when Ignition 
Knob Switch is Pushed) ................................ 10E-23

Keyless Start Control Module Power and 

Ground Circuit Check....................................10E-24

DTC No. 11: Communication Error with 

Steering Lock Unit.........................................10E-25

DTC No. 13 / No. 14: Release Signal Error 

from Steering Lock Unit / Steering Lock Unit 
Malfunction....................................................10E-27

DTC No. 21 / No. 22: Internal Error of Keyless 

Start Control Module (EEPROM Reading 
Error) / (EEPROM Writing Error)...................10E-27

DTC No. 31: Lost Communication with BCM ..10E-28
DTC No. 33: Control Module Communication 

Bus Off ..........................................................10E-30

DTC No. 51 / No. 52 / No. 53: Driver Side / 

Passenger Side / Rear End Door Request 
Switch Failure................................................10E-32

Repair Instructions ..........................................10E-34

Antennas and Request Switches Removal 

and Installation ..............................................10E-34

Front Door (Driver and Passenger Side), Rear 

End Door Request Switch Inspection............10E-35

Steering Lock Unit Removal and Installation ..10E-35
Steering Lock Unit Inspection .........................10E-35
Front Door Lock Switch Inspection .................10E-35
Keyless Start Control Module Removal and 

Installation .....................................................10E-36

Remote Controller Inspection..........................10E-36
Replacement of Remote Controller Battery ....10E-36
Registration Procedure for Remote Controller 

ID Code .........................................................10E-37

Keyless Start Registration...............................10E-38

10-1 Precautions: 

Control Systems

Precautions

Precautions

Precautions for Control Systems

S6JB0AA000001

Air Bag Warning
Refer to “Air Bag Warning in Section 00”.

Cruise Control System:  10A-1

Control Systems

Cruise Control System

General Description

Cruise Control System Construction

S6JB0AA101001

The cruise control system is a device which maintains a preset vehicle speed while driving at a high speed, e.g., on a 
highway. It allows the driver to drive his vehicle at a constant speed of 40 km/h (25 mile/h) or higher without 
depressing the accelerator pedal. The system also has such functions as to change the vehicle speed without 
operating the accelerator pedal (but using SET/COAST and RES/ACC switches), cancel cruise control (CANCEL 
switch) and resume the speed in memory automatically after cruise control is cancelled (RES/ACC switch). The 
system mainly consists of electric throttle body assembly (petrol engine model) or fuel injectors (diesel engine model), 
ECM, cruise control switch (MAIN (ON/OFF) switch, SET/COAST switch, RES/ACC switch and CANCEL switch), etc.

15

14

16

16

10

10

13

15

14

9

11

12

13

3

5

8

6

7

4

1

2

9

17

[B]

[A]

I6JB0AA10001-01

[A]: Petrol engine model

6. MAIN (ON/OFF) switch

13. ECM

[B]: Diesel engine model

7. SET/COAST switch

14. Transmission range switch (A/T model)

1. Combination meter

8. CANCEL switch

15. TCM (A/T model)

2. “CRUISE” indicator light

9. Wheel speed sensor (vehicle speed signal)

16. Electric throttle body

3. “SET” indicator light

10. ABS or ESP

® control module

17. Fuel injectors

4. Cruise control switch

11. Brake light switch with brake pedal position switch

5. RES/ACC switch

12. Clutch pedal position switch (M/T model)