Suzuki Grand Vitara JB627. Manual - part 17

1A-17 Engine General Information and Diagnosis: 

Electronic Control System Diagram

S6JB0B1102002

EGR

VALVE

(IF EQUIPPED)

MAP

SENSOR

(IF EQUIPPED)

INTAKE

MANIFOLD

EXHA

U

ST

MANIFOLD

V

A

CUUM

EXHA

UST GAS

AIR

FUEL

V

A

POR

THREE W

A

Y

CA

T

A

LY

ST

W

A

RM UP

CA

T

A

LY

ST

EXHA

UST

PIPE

EV

AP

CANISTER

BAR

OMETRIC  

PRESSURE 

SENSOR

EV

AP

CANISTER

PURGE

VA

LV

E

FUEL 

INJECT

O

R

ECT

SENSOR

RADIA

T

OR

FA

N

ECM

HEA

TER

CONTR

O

L

A/F SENSOR

HO2S-2

(IF EQUIPPED)

ENGINE

CMP

SENSOR

CKP

SENSOR

KNOCK

SENSOR

IGNITION COIL

WITH IGNITER

A

CCELERA

T

OR PED

A

L

POSITION (APP) SENSOR

A/C COMPRESSOR

CLUTCH

(IF EQUIPPED)

HEA

T

ER

CONTR

O

L

IMMOBILIZER

COIL ANTENNA

KEYLESS ST

AR

T

CONTR

OL MODULE

(IF EQUIPPED)

PO

WER STEERING

PUMP PRESSURE

SWITCH

TCM (A/T MODEL)

ST

OP LAMP

SWITCH 

AIR

CLEANER

IA

T

SENSOR

MAF

SENSOR

A/C REFRIGERANT

PRESSURE SENSOR

(IF EQUIPPED 

WITH A/C)

COMBINA

TION METER

· MIL

· COOLANT 

TEMP

.

· IMMOBILIZER INDICA

T

O

R LAMP 

· T

A

CHOMETER

· SPEEDOMETER

· CR

UISE MAIN SWITCH 

. CANCEL SWITCH 

. A

CC/RES SWITCH 

. SET/CO

AST SWITCH

CLUTCH SWITCH

CR

UISE CONTR

O

L SWITCHES

· 

ELECTRIC LO

AD

DLC

· 

A/C SWITCH ON

TP

SENSOR

ELECTRIC THR

O

TTLE 

 

BOD

Y ASSEMBL

Y

THR

O

TTLE

AC

T

U

A

T

O

R

IMT V

A

CUUM

SOLENOID V

A

LV

E

IMT V

A

LVE

WHEEL SPEED

SENSOR (VSS)

BCM

4WD CONTR

O

L MODULE

(IF EQUIPPED)

(IF EQUIPPED)

BRAKE SWITCH 

(FOR CR

USE CONTR

OL)

(FOR CR

USE CONTR

OL)

 

FUEL

PUMP

FUEL LEVEL SENSOR

TANK PRESSURE

CONTROL VALVE

FUEL T

ANK

ABS or ESP® CONTR

O

L 

MODULE

I6JB0B110004-02

Engine General Information and Diagnosis:  1A-18

Electronic Control System Wiring Circuit Diagram

S6JB0B1102003

+B

IG1

+BB

IG2

IG2

67

  :  42

  :  43

WHT

BLU

BLU/BLK
BLU/BLK

  :  5V

  :  12V

YEL

YEL/BLK 

YEL/RED 

IG1

E23-8

C37-59

E23-2
E23-3

C37-73
C37-80

E23-16

C37-28

GRY/BLU

PNK/BLU

BLK/ORN
BLK/ORN

BLK/YEL

IG1

BLU/RED

C37-35

PNK/BLU

C37-78

C37-36

YEL/RED

E23-28

+BB

GRN/WHT

E23-30

PNK

BLK

WHT/GRN

E23-24

RED/BLK

E23-15

BLU/

RED

C37-8

E23-19

E23-11

C37-58

GRY/RED

BLU

GRY/GRN

+B

RED

C37-4

C37-23

C37-49
C37-68

C37-26

LT GRN

C37-24

PNK

E23-37

C37-48

WHT

C37-25

BLU/ORN

GRN

C37-45

C37-64

E23-4

BLK

BLU/YEL

E23-7

WHT/BLU

ORN

ORN/BLU

BLU/GRN

BLU/YEL

E23-26
E23-27

E23-35

E23-33

E23-34

C37-66

PPL/RED

C37-74

E23-23

E23-14

+BB

RED

WHT/BLK

C37-20

E23-29

PPL/WHT

+BB

RED

WHT

IG1

GRY/RED

C37-29

GRY/BLK

C37-38

BLK/YEL

BLU/YEL

BRN

YEL

C37-37

C37-79

RED

BLK/YEL

RED/WHT

BLK/YEL

E23-9 
E23-17

E23-40

E23-32

E23-38

E23-39

E23-31  

WHT/BLU

WHT/RED

BLK/WHT

BLK/YEL

YEL/GRN

BLU

LT GRN

RED

RED/YEL

GRN

PNK

GRY/GRN

BLK

BLK

BLK/YEL

BLU/BLK

BLU/WHT

YEL/GRN

BLU/BLK

BLU/RED

WHT/GRN

ST

68

GRN/BLK

GRY/BLK

GRY/GRN

C37-47

BLK/YEL

WHT/BLU

C37-39

C37-81

BLK/ORN

WHT/BLK

C37-21

BLU/BLK

WHT/RED

WHT

E23-25

PPL/YEL

C37-67

C37-3

C37-1
C37-2

C37-22

E23-1

BLK/WHT

BRN/RED

C37-55

BRN/YEL

C37-75

BRN/WHT

C37-56

C37-76

BRN/BLK

BRN

C37-57

 

YEL/GRN 

C37-31

C37-12

C37-11

C37-30

C37-10

C37-15

PNK

PNK/BLK

PNK/GRN

C37-14

PNK/BLU

C37-33

C37-13

C37-32

C37-34

C37-65 GRN

C37-46 WHT

E23-6

E23-5

BLU/RED

RED/BLU

C37-16

PNK/BLK

C37-77

C37-17

BLK/RED

RED

C37-19

RED/YEL

BLK

C37-18

PNK

LFH-

LFH-

WHT

BLK/RED

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

17

18

19

20

21

22

26

25

24

23

27

28

30

31

32

33

34

35

36

37

38

39

44

45

47

46

50

51

49

54

52

53

55

58

59

60

61

62
63

64
66

69

65

71

40

41

70

56

57

48

29

I6JB0B110005-01

1A-19 Engine General Information and Diagnosis: 

Terminal arrangement of ECM (PCM) connector (Viewed from harness side)

1

3 2

4

5

6

7

8

9

1110

12

13

14

15

16

17

18

19

20

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

33

34

35

36

37

38

39

40

32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

C37

E23

I6JB01110021-01

1. APP sensor

25. Sub fuel level sensor

49. Radiator cooling fan relay No.3

2. CMP sensor

26. BCM, TCM (A/T model), 4WD control module (if 

equipped), ABS or ESP

® control module, and 

SDM

50. Radiator cooling fan motor No.1

3. CKP sensor

27. Throttle actuator control relay

51. Radiator cooling fan motor No.2

4. MAF and IAT sensor

28. “THR MOT” fuse

52. A/C compressor relay (if equipped)

5. MAP sensor (if equipped)

29. Electric throttle body assembly

53. A/C compressor

6. A/C refrigerant pressure sensor

30. Throttle actuator

54. “CPRSR” fuse

7. ECT sensor

31. Throttle position sensor

55. Ignition coil assembly for No.1 spark plug

8. “O2 HTR” fuse

32. Fuel injector No.1

56. Ignition coil assembly for No.2 spark plug

9. HO2S heater relay 

33. Fuel injector No.2

57. Ignition coil assembly for No.3 spark plug

10. HO2S (bank-1) (if equipped)

34. Fuel injector No.3

58. Ignition coil assembly for No.4 spark plug

11. HO2S (bank-2) (if equipped)

35. Fuel injector No.4

59. Ignition coil assembly for No.5 spark plug

12. A/F sensor (bank-1)

36. Fuel injector No.5

60. Ignition coil assembly for No.6 spark plug

13. A/F sensor (bank-2)

37. Fuel injector No.6

61. Power steering pump pressure switch

14. Knock sensor

38. EGR valve (if equipped)

62. “IG COIL” fuse

15. Cruise control switch

39. EVAP canister purge valve

63. “IG2 SIG” fuse

16. Brake switch

40. Transmission range sensor or clutch start switch 

(if equipped)

64. “DOME” fuse

17. Brake light

41. Starting motor

65. Main relay

18. Clutch switch (if equipped)

42. Engine ground

66. “F1” fuse

19. ABS or ESP

® control module

43. Body ground

67. Ignition switch

20. To BCM, combination meter, TCM (A/T model), 4WD 

control module (if equipped), keyless start control 
module (if equipped) and steering angle sensor (ESP

® 

model)

44. IMT vacuum solenoid valve

68. “IGN” fuse

21. Immobilizer coil antenna (if equipped)

45. Fuel pump relay

69. “STR MOT” fuse

22. DLC

46. Fuel pump

70. “ST SIG” fuse

23. ECM

47. Radiator cooling fan relay No.1

71. Starting motor control relay

24. Main fuel level sensor

48. Radiator cooling fan relay No.2

Engine General Information and Diagnosis:  1A-20

CM connector “C37”

Terminal

Circuit

C37-1

Heater output of heated oxygen sensor (Bank-1) (if equipped)

C37-2

Heater output of heated oxygen sensor (Bank-1) (if equipped)

C37-3

Oxygen signal of heated oxygen sensor (Bank-1) (if equipped)

C37-4

MAF sensor signal

C37-5

—

C37-6

—

C37-7

—

C37-8

Power steering pump pressure switch signal

C37-9

—

C37-10

EVAP canister purge valve output

C37-11

EGR valve (stepper motor coil 3) output (if equipped)

C37-12

EGR valve (stepper motor coil 1) output (if equipped)

C37-13

Fuel injector No.5 output

C37-14

Fuel injector No.3 output

C37-15

Fuel injector No.1 output

C37-16

Ground for A/F sensor adjusting resister (Bank-1) (if equipped)

C37-17

A/F sensor adjusting resister signal (Bank-1) (if equipped)

C37-18

A/F sensor signal (+) (Bank-1)

C37-19

A/F sensor signal (–) (Bank-1)

C37-20

Heater output of heated oxygen sensor (Bank-2) (if equipped)

C37-21

Heater output of heated oxygen sensor (Bank-2) (if equipped)

C37-22

Oxygen signal of heated oxygen sensor (Bank-2) (if equipped)

C37-23

Ground for MAF sensor

C37-24

IAT sensor signal

C37-25

Knock sensor signal

C37-26

ECT sensor signal

C37-27

—

C37-28

Starting motor control relay output

C37-29

IMT vacuum solenoid valve output

C37-30

EGR valve (stepper motor coil 4) output (if equipped)

C37-31

EGR valve (stepper motor coil 2) output (if equipped)

C37-32

Fuel injector No.6 output

C37-33

Fuel injector No.4 output

C37-34

Fuel injector No.2 output

C37-35

Ground for A/F sensor adjusting resister (Bank-2) (if equipped)

C37-36

A/F sensor adjusting resister signal (Bank-2) (if equipped)

C37-37

A/F sensor signal (+)(Bank-2)

C37-38

A/F sensor signal (–) (Bank-2)

C37-39

Ground for ECM

C37-40

—

C37-41

—

C37-42

—

C37-43

—

C37-44

—

C37-45

Output for 5 V power source of throttle position sensor

C37-46

Throttle position sensor signal (main)

C37-47

CKP sensor signal

C37-48

A/C refrigerant pressure sensor signal (if equipped)

C37-49

Output for 5 V power source of MAP sensor (if equipped) and A/C refrigerant pressure sensor (if 
equipped)

C37-50

—

C37-51

—

C37-52

—

C37-53

—

C37-54

—

C37-55

Ignition coil No.5 output

C37-56

Ignition coil No.3 output