Suzuki Grand Vitara JB416 / JB420 (ESP model). Service manual - part 4

1A-12 Engine General Information and Diagnosis: 

ECM Input / Output Circuit Diagram

S5JB0E1102003

For J20 engine

76

77

37

38

39

40

41

+B

60

IG1

+BB

IG2

IG2

64

  :  74

  :  75

PNK

PNK/BLK

PNK/GRN

PNK/BLU

GRN/BLK

BLK/WHT

WHT

BLU

BLU/BLK

BLU/BLK

70

  :  5V

  :  12V

42

43

 

YEL

YEL/GRN 

YEL/BLK 

73

61

YEL/RED 

IG1

E23-29

E23-2

C37-58

E23-1

E23-16

C37-15
C37-30
C37-29

51

E23-60

C37-22

GRY/BLU

PNK/BLU

BLK/ORN
BLK/ORN

BLK/YEL

IG1

15

RED/BLU

C37-34

PNK/BLU

C37-32

C37-35

YEL/RED

E23-24

27

+BB

GRN/WHT

28

E23-20

C37-13

C37-5
C37-6
C37-3
C37-4

44

46

45

PNK

BLK

WHT/GRN

E23-15

C37-1

C37-2

C37-16

C37-17

RED/BLK

E23-46

BLU/ORN

C37-7

E23-28

E23-13

C37-48

6

5

7

GRY/RED

GRN/WHT

BLU

GRY/GRN

8

PPL/YEL

+B

LT GRN

C37-26
C37-27

C37-14
C37-10

C37-55

C37-24

C37-57

RED

C37-25

52

PNK

E23-49

53

58

63

67

69

71

C37-12

16

WHT

2

C37-56

BRN

54

C37-21

55

BRN/BLK

C37-20

32

BLU/ORN

GRN

C37-53
C37-54

C37-40
C37-41

C37-45

C37-44

WHT

BLK

RED

BLU/RED

BLU/YEL

E23-17

E23-50

WHT

WHT/BLU

ORN

ORN/BLU

BLU/GRN

BLUYEL

E23-56

E23-55
E23-54

E23-51

E23-53

E23-52

1

2

34

35

33

2

3

4

WHT/RED

C37-52

BLK/YEL

31

57

BRN/YEL

C37-18

BRN/WHT

56

C37-19

47

E23-47

48

E23-48

12

+BB

14

RED

BLK/RED

2

C37-47

C37-11

E23-5

PPL/WHT

29

+BB

30

21

23

24

25

22

26

20

RED

WHT

IG1

11

10

9

DN

GRY/RED

C37-33

BRN/BLK

C37-8

BRN/BLK

C37-28

C37-9

BLU

GRY/BLK

C37-31

BLK/YEL

RED/YEL

BLU

PNK

C37-36

C37-51

WHT

BLK

C37-37

C37-38

GRN

BLK/YEL

RED/WHT

BLK/YEL

E23-4 

E23-19

E23-7   

E23-8   

E23-21

E23-22

E23-6  

WHT/BLU

WHT/RED

BLK/WHT

BLK/YEL

YEL/GRN

BLU

LT GRN

E23-12

YEL

RED

RED/YEL

GRN

PNK

BLK

GRY/GRN

BLK

BLK

BLK/YEL

62

59

BLU/BLK

BLU/WHT

YEL/GRN

BLU/BLK

BLU/RED

WHT/GRN

ST

13

2

17

18

19

36

49

50

65

66

68

72

I5JB0D110004-01

1. Accelerator pedal position (APP) sensor 

assembly

27. Stop lamp switch

53. “CPRSR” fuse

2. Shield wire

28. Stop lamp

54. Ignition coil assembly (for No.1 spark plug)

Engine General Information and Diagnosis:  1A-13

3. CMP sensor

29. DLC

55. Ignition coil assembly (for No.2 spark plug)

4.

CKP sensor

30. To TCM (for A/T model), BCM, ABS / ESP

® control 

module and 4WD control module (if equipped)

56. Ignition coil assembly (for No.3 spark plug)

5. MAF and IAT sensor

31. Barometric pressure sensor

57. Ignition coil assembly (for No.4 spark plug)

6. CO adjust resistor (if equipped)

32. Throttle actuator control relay

58. Power steering pump pressure switch

7. MAP sensor

33. “THR MOT” fuse

59. “IG COIL” fuse

8. ECT sensor

34. Electric throttle body assembly

60. Main relay

9. A/C refrigerant pressure sensor (if 

equipped with A/C)

35. Throttle actuator

61. “IG2 SIG” fuse

10. Electric load current sensor

36. Throttle position sensor

62. “DOME” fuse

11. Generator

37. Fuel injector No.1

63. “FI” fuse

12. “O2 HTR” fuse

38. Fuel injector No.2

64. Ignition switch

13. HO2S heater relay

39. Fuel injector No.3

65. “IGN” fuse

14. HO2S-2

40. Fuel injector No.4

66. “STR MOT” fuse

15. A/F sensor

41. EVAP canister purge valve

67. “ST SIG” fuse

16. Knock sensor

42. EGR valve

68. Starting motor control relay

17. Cruise control switch (if equipped)

43. IMT vacuum solenoid valve

69. Transmission range switch (for A/T model)

18. Brake pedal switch (for cruise control)

44. Fuel pump relay

70. Starting motor

19. Clutch pedal position switch (for cruise 

control)

45. Fuel pump

71. Immobilizer coil antenna (if equipped)

20. ABS / ESP

® control module

46. Radiator cooling fan relay No.1

72. Diagnosis connector (if equipped)

21. BCM

47. Radiator cooling fan relay No.2

73. Battery

22. TCM (for A/T model)

48. Radiator cooling fan relay No.3

74. Engine ground

23. Combination meter

49. Radiator cooling fan motor No.1

75. Body ground

24. 4WD control module (if equipped)

50. Radiator cooling fan motor No.2

76. Main fuel level sensor

25. Keyless start control module (if equipped)

51. A/C compressor relay (if equipped with A/C)

77. Sub fuel level sensor

26. Steering angle sensor (for vehicle with 

ESP

®)

52. A/C compressor (if equipped with A/C)

1A-14 Engine General Information and Diagnosis: 

For M16 engine

32

33

34

35

36

+B

52

IG1

ST

IG2

IG2

56

  :  64

  :  65

PNK

PNK/BLK

PNK/GRN

PNK/BLU

GRN/BLK

BLK/WHT

WHT

BLU

BLU/BLK

BLU/BLK

61

  :  5V

  :  12V

37

 

YEL

YEL/GRN 

YEL/BLK 

63

53

YEL/RED 

IG1

E23-29

E23-2

C37-58

E23-1

E23-16

C37-15
C37-30
C37-29

46

E23-60

C37-22

GRY/BLU

PNK/BLU

BLK/ORN
BLK/ORN

BLK/YEL

IG1

14

RED/BLU

2

C37-34

PNK/BLU

C37-32

C37-35

YEL/RED

66

21

E23-24

22

+BB

GRN/WHT

23

E23-20

C37-13

C37-5
C37-6
C37-3
C37-4

39

41

40

PNK

BLK

WHT/GRN

E23-15

C37-1

C37-2

C37-16

C37-17

RED/BLK

E23-46

BLU/ORN

C37-7

E23-28

E23-13

C37-48

6

5

7

GRY/RED

GRN/WHT

BLU

GRY/GRN

8

PPL/YEL

+B

LT GRN

C37-26

C37-27

C37-14
C37-10

C37-55

C37-24

C37-57

RED

C37-25

47

PNK

E23-49

48

16

55

59

17

C37-12

15

WHT

2

C37-56

BRN

49

C37-21

50

BRN/BLK

C37-20

27

BLU/ORN

GRN

C37-53
C37-54

C37-40
C37-41

C37-45

C37-44

WHT

BLK

RED

BLU/RED

BLU/YEL

E23-17

E23-50

WHT

WHT/BLU

ORN

ORN/BLU

BLU/GRN

BLUYEL

E23-56

E23-55
E23-54

E23-51

E23-53

E23-52

1

2

29

30

28

2

3

4

WHT/RED

C37-52

26

42 

E23-47

43

E23-48

12

+BB

13

RED

BLK/RED

2

C37-47

C37-11

E23-5

PPL/WHT

24

+BB

25

19

20

18

RED

WHT

10

9

DN

BRN/RED

C37-8

BRN/BLK

C37-28

GRY/BLK

C37-31

BLK/YEL

RED/YEL

WHT

BLK

GRN

BLK/YEL

RED/WHT

BLK/YEL

E23-4 

E23-19

WHT/BLU

WHT/RED

E23-12

YEL

RED

RED/YEL

GRN

PNK

GRY/GRN

BLK

BLK/YEL

54

51

BLU/BLK

BLU/WHT

YEL/GRN

BLU/BLK

BLU/RED

C37-51

BLK/YEL

WHT/BLU

BRN/WHT

BRN/YEL

38

YEL

RED

C37-60

C37-59

+BB

WHT/GRN

11

31

44

45

57

58

60

62

C37-37

C37-38

67

I5JB0D110005-01

Engine General Information and Diagnosis:  1A-15

Terminal Arrangement of ECM Coupler (Viewed from Harness Side)

Connector: C37

1. Accelerator pedal position (APP) sensor 

assembly

24. DLC

47. A/C compressor (if equipped with A/C)

2. Shield wire

25. To BCM and ABS / ESP

® control module

48. “CPRSR” fuse

3. CMP sensor

26. Barometric pressure sensor

49. Ignition coil assembly (for No.1 and No.4 

spark plugs)

4. CKP sensor

27. Throttle actuator control relay

50. Ignition coil assembly (for No.2 and No.3 

spark plugs)

5. MAF and IAT sensor

28. “THR MOT” fuse

51. “IG COIL” fuse

6. CO adjust resistor (if equipped)

29. Electric throttle body assembly

52. Main relay

7. MAP sensor

30. Throttle actuator

53. “IG2 SIG” fuse

8. ECT sensor

31. Throttle position sensor

54. “DOME” fuse

9. A/C refrigerant pressure sensor (if equipped 

with A/C)

32. Fuel injector No.1

55. “FI” fuse

10. Generator

33. Fuel injector No.2

56. Ignition switch

11. “O2 HTR” fuse

34. Fuel injector No.3

57. “IGN” fuse

12. HO2S heater relay

35. Fuel injector No.4

58. “STR MOT” fuse

13. HO2S-2

36. EVAP canister purge valve

59. “ST SIG” fuse

14. A/F sensor

37. EGR valve

60. Starting motor control relay

15. Knock sensor

38. Oil control valve (Camshaft position control)

61. Starting motor

16. Power steering pump pressure switch

39. Fuel pump relay

62. Diagnosis connector (if equipped)

17. Immobilizer coil antenna (if equipped)

40. Fuel pump

63. Battery

18. ABS / ESP

® control module

41. Radiator cooling fan relay No.1

64. Engine ground

19. BCM

42. Radiator cooling fan relay No.2

65. Body ground

20. Combination meter

43. Radiator cooling fan relay No.3

66. Main fuel level sensor

21. Steering angle sensor (for vehicle with ESP

®)

44. Radiator cooling fan motor No.1

67. Sub fuel level sensor

22. Stop lamp switch

45. Radiator cooling fan motor No.2

23. Stop lamp

46. A/C compressor relay (if equipped with A/C)

E23

C37

3

4

18

19

5

6

7

10

11

17

20

47

46

49

50

51

21

22

52

16

25

9

24

14
29

55

57

54 53

59

60

58

2

26

27

28

15
30

56

48

32

31

34

35

36

37

40

42

39 38

44

45

43

41

33

1

12

13

23

8

3

4

18

19

5

6

7

10

11

17

20

47

46

49

50

51

21

22

52

16

25

9

24

14
29

55

57

54 53

59

60

58

2

26

27

28

15
30

56

48

32

31

34

35

36

37

40

42

39 38

44

45

43

41

33

1

12

13

23

8

I4RS0A110008-01

Terminal

Wire color

Circuit

Terminal

Wire color

Circuit

1

PNK

Fuel injector No.1

31

BLK/YEL

Ground for A/F sensor heater

2

PNK/BLK

Fuel injector No.2

32

PNK/BLU

Heater output of A/F sensor

3

YEL/GRN

EGR valve (stepper motor coil 
3)

33

GRY/RED

Intake manifold tuning vacuum 
solenoid valve output
(for J20 engine)

4

YEL

EGR valve (stepper motor coil 
4)

34

RED/BLU

Ground for A/F sensor 
adjusting resistor

5

YEL/BLK

EGR valve (stepper motor coil 
1)

35

RED/YEL

A/F sensor adjusting resistor 
signal

6

YEL/RED

EGR valve (stepper motor coil 
2)

36

PNK

Crankshaft position (CKP) 
sensor (–)
(for J20 engine)

7

BLU/ORN

Power steering pump pressure 
switch signal

37

BLK

A/F sensor signal (–)

8

BRN/RED

(for M16 

engine)

Generator field coil monitor 
signal

38

WHT

A/F sensor signal (+)

BRN/BLK

(for J20 

engine)