Suzuki Grand Vitara JB627. Manual - part 414

10B-5 Body Electrical Control System: 

Connector Layout Diagram of BCM

S6JB0BA202002

BCM connectors (viewed from harness side)

1. BCM

22. Navigation (if equipped)

43. Dimmer and passing switch

2. Auto-ON headlight sensor (if equipped)

23. POWER/NORMAL mode switch (if equipped)

44. Horn relay

3. Rear wiper motor

24. Headlight auto leveling control module (if equipped)

45. Horn switch

4. Rear wiper relay

25. Front fog light relay (if equipped)

46. Horn

5. Rear wiper and washer switch

26. Tail light relay

47. Lighting switch

6. Outside air temperature sensor

27. Junction connector

48. Ignition switch

7. Key reminder switch

28. Door mirror heater relay (if equipped)

49. Battery

8. Theft deterrent light

29. Rear end door lock actuator

50. To turn signal light

9. Oil pressure switch

30. Data link connector (DLC)

51. Body ground

10. Generator

31. Headlight high beam relay

52. Engine ground

11. Information display

32. Headlight low beam relay

53. Right side door mirror heater (if equipped)

12. Keyless entry receiver (if equipped)

33. Door lock motor relay

54. Left side door mirror heater (if equipped)

13. Driver side door switch

34. Driver side door lock actuator

55. Audio unit

14. Other than driver side door switch

35. Passenger side door lock actuator

INT: Intermittent position

15. HVAC control module

36. Rear door lock actuator

ON: Rear wiper ON position

16. Driver side seat belt switch

37. Turn signal and hazard warning relay

LO: Low beam position

17. Brake fluid level switch

38. Hazard warning switch

HI: High beam position

18. Parking brake switch

39. Interior light

A: Auto position (if equipped)

19. Door key cylinder switch (included in door lock 

actuator)

40. Air bag control module

C: Clearance position

20. Manual door lock switch

41. Rear window defogger relay

H: Head position

21. Front fog light switch (if equipped)

42. Rear window defogger

7

8

9

10

11

12

13

14

15

6

5

4

3

2

1

G32

24

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

G30

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

27

28

29

30

31

32

33

34

35

36

37

38

39

40

G31

1

I5JB0AA20002-01

1. BCM

Body Electrical Control System:  10B-6

Component Location

BCM and Related System Component Location

S6JB0BA203001

8

10

7

9

6

7

2

26

24

21

22

5

27

19

18

29

23

15

14

17

20

16

13

12

11

25

1

4

3

28

30

I6JB0BA20004-02

1. Generator

11. Keyless entry receiver (if equipped)

21. Headlight high beam relay

2. Brake fluid level switch

12. Parking brake switch

22. Headlight low beam relay

3. ECM

13. Seat belt buckle switch

23. BCM

4. Oil pressure switch

14. Theft deterrent light

24. Rear end window defogger, mirror heater, rear wiper and front fog 

light relays (included in integration relay)

5. Outside air temperature sensor

15. Rear end door window defogger switch

25. Keyless start control module (if equipped)

6. Door lock actuator (incorporated in 

key cylinder switch)

16. POWER/NORMAL mode select switch 

(A/T model)

26. Auto-on headlight sensor (if equipped)

10B-7 Body Electrical Control System: 

Diagnostic Information and Procedures

BCM Self-Diagnosis Function

S6JB0BA204001

• BCM monitors conditions of the system components and its circuit with ignition switch turned to ON position. When 

an abnormality in the system occurs, the area where that abnormality lies is stored in the memory of EEPROM in 
BCM.

• DTC can be checked in either one of following ways.

– DTC can be checked by SUZUKI scan tool (2) connected to DLC (1).
– DTC can be read from flashing pattern of theft deterrent light (3). In addition, when theft deterrent light is flashing 

for DTC outputting DTC is displayed on combinations meter (4) at the same time.

BCM input / output table

7. Door switch

17. Hazard warning switch

27. Front fog light switch (if equipped)

8. Interior light

18. Rear wiper switch

28. Turn signal and hazard warning relay

9. Luggage room light

19. Lighting switch

29.  Key reminder switch (included in ignition switch)

10. Rear end door lock actuator 

(incorporated in door switch)

20. Manual door lock switch

30. Tail light relay

3

1

2

4

I5JB0AA20004-01

Control

Input

Output

Power door lock system

• Key cylinder switch
• Manual door lock switch

• Driver side door lock actuator
• Other than driver side door lock 

actuator

Keyless entry system

• Key reminder switch
• Keyless entry receiver
• Driver side door switch

• Driver side door lock actuator
• Other than driver side door lock 

actuator

• Turn signal and hazard warning relay
• Interior light

Keyless start system
(Door lock function)

• Keyless start control module

• Driver side door lock actuator
• Other than driver side door lock 

actuator

• Turn signal and hazard warning relay
• Interior light

Rear wiper 

• Rear wiper INT switch
• Rear wiper LO switch

• Rear wiper relay

Body Electrical Control System:  10B-8

Combination meter

• Lighting switch
• Brake fluid level switch
• Seat belt reminder light signal
• Generator
• Oil presser switch
• Parking brake switch
• Power/Normal mode select switch (A/T 

model)

• Dimmer switch (high beam)
• Illumination controller (for auto-on headlight 

model only)

• Door switch
• BCM DTC signal

• Combination meter

Interior light

• Each door switch
• Key reminder switch

• Interior light
• Luggage room light

Warning buzzer

• Key reminder switch
• Tail light switch
• Driver side door switch
• ECM (vehicle speed signal)
• TCM (reverse signal) (if equipped)
• 4WD control module (if equipped)
• Keyless start control module (if equipped)

• Warning buzzer (located in BCM)

DRL system

• Lighting switch
• ECM (engine ON, OFF signal)
• Generator

• Headlight low beam relay

Auto-on headlight system

• Lighting switch
• Parking brake switch
• Auto-on headlight sensor

• Tail light relay
• Headlight low beam relay

Front fog light

• Lighting switch
• Front fog light switch

• Front fog light relay

Rear end door window 
defogger and door mirror 
heater

• Rear end door window defogger switch 

(included in HVAC control module)

• Generator
• ECM (engine ON, OFF signal)

• Rear end door defogger window 

relay

• Mirror heater relay (if equipped)

Tail light

• Lighting switch

• Tail light relay

Door lock canceller

• SDM (air bag deployment signal)

• Driver side door lock actuator
• Other than driver side door lock 

actuator

Theft deterrent light

• Key reminder switch

• Theft deterrent light (located in HVAC 

control module)

Control

Input

Output