Suzuki Grand Vitara JB416 / JB420. Manual — part 18

1A-21 Engine General Information and Diagnosis:

Terminal Arrangement of ECM Coupler (Viewed from Harness Side)

Connector: C37

1. Accelerator pedal position (APP) sensor

assembly

22. Stop lamp switch

44. Radiator cooling fan motor No.1

2. Shield wire

23. Stop lamp

45. Radiator cooling fan motor No.2

3. CMP sensor

24. DLC

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

4. CKP sensor

25. To BCM and ABS hydraulic unit / control

module assembly

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

5. MAF and IAT sensor

26. Barometric pressure sensor

48. “CPRSR” fuse

6. CO adjust resistor (if equipped)

27. Throttle actuator control relay

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

spark plugs)

7. MAP sensor

28. “THR MOT” fuse

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

spark plugs)

8. ECT sensor

29. Electric throttle body assembly

51. “IG COIL” fuse

9. A/C refrigerant pressure sensor (if equipped

with A/C)

30. Throttle actuator

52. Main relay

10. Generator

31. Throttle position sensor

53. “IG2 SIG” fuse

11. “O2 HTR” fuse

32. Fuel injector No.1

54. “DOME” fuse

12. HO2S heater relay

33. Fuel injector No.2

55. “FI” fuse

13. HO2S-2

34. Fuel injector No.3

56. Ignition switch

14. A/F sensor

35. Fuel injector No.4

57. “IGN” fuse

15. Knock sensor

36. EVAP canister purge valve

58. “STR MOT” fuse

16. Power steering pump pressure switch

37. EGR valve

59. “ST SIG” fuse

17. Immobilizer coil antenna (if equipped)

38. Oil control valve (Camshaft position control)

60. Starting motor control relay

18. ABS hydraulic unit / control module assembly

39. Fuel pump relay

61. Starting motor

19. BCM

40. Fuel pump

62. Diagnosis connector (if equipped)

20. Combination meter

41. Radiator cooling fan relay No.1

63. Battery

21. Main fuel level sensor

42. Radiator cooling fan relay No.2

64. Engine ground

21-1. Sub fuel level sensor

43. Radiator cooling fan relay No.3

65. Body ground

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)

Engine General Information and Diagnosis: 1A-22

Connector: E23

9

BLU

Electric load current sensor
signal (for J20 engine)

39

—

—

10

GRN/WHT

CO adjusting resistor signal (if
equipped)

40

RED

Throttle position sensor (sub)
signal

11

RED

Oxygen signal of heated
oxygen sensor-2

41

GRN

Ground for throttle position
sensor

12

GRY/BLK

A/C refrigerant pressure
sensor signal (if equipped with
A/C)

42

—

—

13

GRN/BLK

EVAP canister purge valve
output

43

—

—

14

GRY/RED

Output of 5 V power source for
MAP sensor, A/C refrigerant
pressure sensor, electric load
current sensor (for J20 engine)
and CO adjusting resistor (if
equipped)

44

BLU/RED

Output of throttle actuator

15

BLK/ORN

Ground for ECM

45

BLU/YEL

Output of throttle actuator

16

PNK/GRN

Fuel injector No.3

46

—

—

17

PNK/BLU

Fuel injector No.4

47

BLK/RED

Heater output of heated
oxygen sensor-2

18

BRN/YEL

Ignition coil No.4
(for J20 engine)

48

BLK/YEL

Ground for ECM

19

BRN/WHT

Ignition coil No.3
(for J20 engine)

49

—

—

20

BRN/BLK

Ignition coil No.2 and No.3
(for M16 engine)

50

—

—

Ignition coil No.2
(for J20 engine)

21

BRN

Ignition coil No.1 and No.4
(for M16 engine)

51

WHT/BLU

CKP sensor signal (for M16
engine)

Ignition coil No.1
(for J20 engine)

BLU

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

22

BLK/YEL

Starting motor signal

52

WHT/RED

CMP sensor signal

23

—

—

53

WHT

Output for 5 V power source of
throttle position sensor

24

PPL/YEL

Engine coolant temp. (ECT)
sensor signal

54

BLK

Throttle position sensor (main)
signal

25

LT GRN

Intake air temp. (IAT) sensor
signal

55

RED/WHT

Manifold absolute pressure
(MAP) sensor signal

26

RED

Mass air flow (MAF) sensor
signal

56

WHT

Knock sensor signal

27

BLU

Ground for MAF sensor

57

GRY/GRN

Ground for sensors

28

BRN/BLK

Generator control signal output

58

BLK/YEL

Ground for ECM

29

BLK/YEL

Ground for ECM

59

BRN/YEL

Oil control valve ground
(for M16 engine)

30

BLK/ORN

Ground for ECM

60

BRN/WHT

Oil control valve output
(for M16 engine)

Terminal

Wire color

Circuit

Terminal

Wire color

Circuit

Terminal

Wire color

Circuit

Terminal

Wire color

Circuit

1

BLU/BLK

Main power supply

31

—

—

2

WHT

Power source for ECM internal
memory

32

—

—

3

—

—

33

—

—

1A-23 Engine General Information and Diagnosis:

4

WHT/RED

CAN (high) communication line
(active high signal) to ABS
hydraulic unit / control module
assembly

34

—

—

5

PPL/WHT

12 V serial communication line
of data link connector

35

—

—

6

BLK/WHT

Cruise control main switch
signal (if equipped with cruise
control system)

36

—

—

7

BLU

Clutch pedal position switch
signal (if equipped with cruise
control system)

37

—

—

8

YEL/GRN

Brake pedal position switch (if
equipped with cruise control
system)

38

—

—

9

—

—

39

—

—

10

—

—

40

—

—

11

—

—

41

—

—

12

YEL

Diagnosis switch terminal (if
equipped)

42

—

—

13

PNK/BLU

Clock signal for immobilizer
coil antenna (if equipped)

43

—

—

14

—

—

44

—

—

15

WHT/GRN

Fuel pump relay output

45

—

—

16

BLU/BLK

Main power supply

46

RED/BLK

Radiator cooling fan relay No.1
output

17

GRN

Power supply of throttle
actuator drive circuit

47

RED

Radiator cooling fan relay No.2
output

18

—

—

48

RED/YEL

Radiator cooling fan relay No.3
output

19

WHT/BLU

CAN (low) communication line
(active low signal) to ABS
hydraulic unit / control module
assembly

49

PNK

A/C compressor relay output (if
equipped with A/C)

20

GRN/WHT

Stop lamp switch signal

50

BLU/ORN

Throttle actuator control relay
output

21

BLK/YEL

Cruise control command
switch ground (if equipped with
cruise control system)

51

BLU/YEL

Ground for accelerator pedal
position (APP) sensor (sub)

22

LT GRN

Cruise control command
switch signal (if equipped with
cruise control system)

52

BLU/GRN

Accelerator pedal position
(APP) sensor (sub) signal

23

—

—

53

ORN/BLU

Output for 5 V power source of
accelerator pedal position
(APP) sensor (sub)

24

YEL/RED

Fuel level sensor signal

54

ORN

Ground for accelerator pedal
position (APP) sensor (main)

25

—

—

55

WHT/BLU

Accelerator pedal position
(APP) sensor (main) signal

26

—

—

56

WHT

Output for 5 V power source of
accelerator pedal position
(APP) sensor (main)

27

—

—

57

—

—

28

GRY/BLU

Serial communication line for
immobilizer coil antenna (if
equipped)

58

—

—

29

BLK/WHT

Ignition switch signal

59

—

—

30

—

—

60

BLU

Main power supply relay output

Terminal

Wire color

Circuit

Terminal

Wire color

Circuit

Engine General Information and Diagnosis: 1A-24

Component Location

Electronic Control System Components Location

S5JB0A1103001

For J20 Engine

NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the opposite side.

I*

E*

11

F*

G*

D

H*

B*

e

n

3*

14*

C

A

15

h

1

2

12

J*

L

16*

7*

a

9

d

4

8

10

6

5

j

m

i

c

g

k

l

f

o

K

13

b

11-1

I5JB0A110016-04

Information sensors

Control devices

Others

1. MAF and IAT sensor

a: Fuel injector

A: ECM

2. Electric throttle body assembly (built-in

throttle position sensor and throttle
actuator)

b: EVAP canister purge valve

B: Combination meter

3. Stop lamp switch

c: Fuel pump relay

C: EVAP canister

4. ECT sensor

d: EGR valve

D: A/C evaporator outlet air temp. sensor (if equipped

with A/C)

5. A/F sensor

e: Malfunction indicator lamp

E: Data link connector

6. Heated oxygen sensor-2

f: Radiator cooling fan relay No.1

F: 4WD control module

7. Battery

g: IMT vacuum solenoid valve

G: TCM (for A/T model)

8. CMP sensor

h: Ignition coil assembly (with ignitor)

H: BCM

9. MAP sensor

i: Main relay

I: Immobilizer coil antenna (if equipped)

10. CKP sensor

j: Integration relay No.2 (built-in HO2S heater

relay, compressor relay and A/T relay)

J: Fuse box No.2

11. Main fuel level sensor

k: Radiator cooling fan relay No.2

K: A/C refrigerant pressure sensor (if equipped with A/

C)

11-1. Sub fuel level sensor

l: Radiator cooling fan relay No.3

L: ABS hydraulic unit / control module assembly

12. Knock sensor

m: Starting motor control relay

13. Power steering pump pressure switch

n: Immobilizer indicator lamp (if equipped)

14. Accelerator pedal position (APP)

sensor

o: Throttle actuator control relay