Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 245

3C-11 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

On-Board Diagnostic System Description

S6JB0A3311009

For 4WD control system, 4WD control module has the following functions.
• When ignition switch is turned ON with engine at stop, differential lock indicator (1), 4L indicator (2) and N indicator 

(3) turn on at the same time for 2 seconds in order to check operation of these indicators.

• When 4WD control module detects any malfunction in the following area, differential lock indicator (1), 4L indicator 

(2) and N indicator (3) flash continuously and 4WD control module comes into fail-safe mode. For details of fail safe 
mode, refer to “Fail-Safe Table: Motor-Shift Type (Transfer with Shift Actuator)”.
– Transfer switch
– Transfer shift actuator motor
– Transfer shift actuator motor position switch
– 4L/N switch
– Center differential lock switch

• DTC can be checked by either one of the following ways.

– DTC can be checked by using SUZUKI scan tool (4) connected to DLC (5).
– If equipped with diagnosis connector, DTC can be displayed on digital display odometer by shorting diagnosis 

connector (6).

• When 4WD control module detects any malfunction, 4WD control module will shift automatically transfer to either N 

or former position which is in before shifting process began.

DLC (Data Link Connector)
Refer to “Data Link Connector (DLC)” under “On-Board Diagnostic System Description: For Diesel Engine Model in 
Section 1A”.

1

2

3

4

5

6

I5JB0A332008-01

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-12

CAN Communication System Description

S6JB0A3311010

Refer to “CAN Communication System Description: For Diesel Engine Model in Section 1A”.

4WD Control Module Transmission Data

4WD Control Module Reception Data

BCM

Combination 

Meter

Transmit

DATA

4WD 

Buzzer on reques

Lock indication status

Neutral Indication Status

Low indication status

4WD diagnostic trouble codes

control

module

ABS control

 module

 (Non-ESP® model)  

ESP® control

 module 

(ESP® model)  

4WD shift position

I5JB0A332010-02

ECM

TCM

DATA

Receive

Engine speed signal

Vehicle speed signal

Brake pedal switch active

4WD 

control

module

Transmission gear

selector position

Wheel speed pulse 
(front right)             

Wheel speed pulse 
(front left)               

Wheel speed pulse 

(rear right)              

Wheel speed pulse 
(rear left)                

ABS active

ABS control module  

(Non-ESP® model)

ESP® control module  

(ESP® model)

ESP® status signal

I6JB01331001-02

3C-13 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

Schematic and Routing Diagram

4WD Control System Wiring Circuit Diagram

S6JB0A3312001

5V

5V

IG

5V

12V

E91-2

5V

12V

12V

+BB

YEL

RED/BLK

BLU

M

E91-3

E91-25

E91-26

RED

E91-24

BLK/YEL

E91-7

BLK/ORN

E91-21

PPL/WHT

E91-22

E91-23

RED

WHT

E91-18

E91-19

E91-20

E91-13

E91-14

E91-12

E91-11

E91-10

E91-1

BLK

BLK

WHT

BLK/WHT

RED/GRN

PNK/WHT

BLU/ORN

BLU/BLK

LT GRN

12V

12V

G59-2

G59-3

G59-4

C54-1

C54-4

C54-2

C54-3

C54-5

WHT/RED

WHT/BLU

1

2

3

4

5

6

7

8

9

10

12

11

13

14

15

17

18

19

20

21

23

22

16

E91-8

PNK

I5JB0A332007-03

1. Transfer actuator

9. ABS / ESP

® hydraulic unit/control 

module

17. DLC

2. Transfer actuator position switch

10. ECM

18. “IG COIL” fuse

3. Transfer actuator motor

11. 4WD control module

19. Ignition switch

4. CPP switch (for M/T model)

12. Transfer switch

20. “4WD” fuse

5. BCM

13. TCM (for A/T model)

21. Shift switch (for A/T model) or CPP switch (for M/T model)

6. TCM (for A/T model)

14. 4L/N switch

22. Main fuse box

7. Combination meter

15. Center differential lock switch

23. Starting motor

8. Keyless start control module (if equipped)

16. Diagnosis connector (if equipped)

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-14

Terminal Arrangement of 4WD Control Module

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

26

[A]

I4JA01332038-01

[A]: Connector “E91” viewed from harness side

Terminal

Circuit

Terminal

Circuit

E91-1

Ground

E91-18

Transfer switch 1

E91-2

Transfer actuator motor 1

E91-19

Transfer switch 2

E91-3

Transfer actuator motor 2

E91-20

Transfer switch 3

E91-7

CPP switch

E91-21

Data link connector (DLC)

E91-8

Diagnosis connector

E91-22

CAN communication line (High)

E91-10 Ground

E91-23

CAN communication line (Low)

E91-11

Power source for internal memory

E91-24

Transfer actuator position switch (ground)

E91-12 Ignition switch

E91-25

Transfer actuator position switch 1 (power)

E91-13 4L/N switch

E91-26

Transfer actuator position switch 2 (power)

E91-14 Center differential lock switch