Suzuki Grand Vitara JB627. Manual - part 64

1A-205 Engine General Information and Diagnosis: 

28

BLK/

YEL

Starting motor 
control relay output

0 – 1 V

Ignition switch is at ON 
position.

—

10 – 14 V

Ignition switch is at ST 
position. (Engine is 
cranking.)

29

GRY/

RED

IMT vacuum 
solenoid valve 
output

0 – 1 V

Engine is racing after 
warmed up engine.

—

10 – 14 V

Ignition switch is at ON 
position.

30

YEL

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

10 – 14 V

Ignition switch is at ON 
position.

—

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference 

waveform No.5: ”.

Engine is at cranking.

Output signal is active low 
duty pulse. Number of 
pulse generated times 
varies depending on 
engine condition.

31

YEL/

RED

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

10 – 14 V

Ignition switch is at ON 
position.

—

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference 

waveform No.5: ”.

Engine is at cranking.

Output signal is active low 
duty pulse. Number of 
pulse generated times 
varies depending on 
engine condition.

32

GRY/

BLK

Fuel injector No.6 
output

10 – 14 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

10 – 14 V

Refer to “Reference 

waveform No.6: ”, 

“Reference waveform 

No.13: ” and 

“Reference waveform 

No.29: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active low 
pulse. Pulse frequency 
varies depending on the 
engine speed.
Pulse width varies 
depending on the ECT 
and engine load.

33

PNK/

BLU

Fuel injector No.4 
output

10 – 14 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

10 – 14 V

Refer to “Reference 

waveform No.6: ”, 

“Reference waveform 

No.14: ” and 

“Reference waveform 

No.29: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active low 
pulse. Pulse frequency 
varies depending on the 
engine speed.
Pulse width varies 
depending on the ECT 
and engine load.

34

PNK/

BLK

Fuel injector No.2 
output

10 – 14 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

10 – 14 V

Refer to “Reference 

waveform No.6: ”, 

“Reference waveform 

No.15: ” and 

“Reference waveform 

No.29: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active low 
pulse. Pulse frequency 
varies depending on the 
engine speed.
Pulse width varies 
depending on the ECT 
and engine load.

Terminal 

No.

Wire 

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis:  1A-206

35

BLU/

RED

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

Below 0.3 V

Ignition switch is at ON 
position.

—

36

BLU/

YEL

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

0.15 – 4.82 V

Ignition switch is at ON 
position.

—

37

BRN

A/F sensor signal 
(+) (Bank-2)

2.0 – 2.4 V

Refer to “Reference 

waveform No.10: ” 

and “Reference 

waveform No.11: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal varies 
depending on the engine 
condition.

38

YEL

A/F sensor signal 
(–) (Bank-2)

1.6 – 2.0 V

Refer to “Reference 

waveform No.10: ” 

and “Reference 

waveform No.11: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

39

BLK/

YEL

Ground for ECM

Below 0.3 V

Ignition switch is at ON 
position.

—

40

—

—

—

—

—

41

—

—

—

—

—

42

—

—

—

—

—

43

—

—

—

—

—

44

—

—

—

—

—

45

BLK

Output for 5 V 
power source of 
throttle position 
sensor

4.5 – 5.5 V

Ignition switch is at ON 
position.

—

46

WHT

Throttle position 
sensor signal 
(main)

0.34 – 0.66 V

Ignition switch is at ON 
position and accelerator 
pedal is not depressed 
after warmed up engine.

Output signal varies 
linearly depending on the 
throttle valve opening.

3.96 – 4.33 V

Ignition switch is at ON 
position and accelerator 
pedal is at fully depressed 
position after warmed up 
engine.

47

WHT/

BLU

CKP sensor signal

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference 

waveform No.16: ”, 

“Reference waveform 

No.28: ” and 

“Reference waveform 

No.29: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Sensor signals are pulse. 
Pulse frequency varies 
depending on the engine 
speed.

Terminal 

No.

Wire 

color

Circuit

Normal voltage

Condition

Remarks

1A-207 Engine General Information and Diagnosis: 

48

GRY/

BLK

A/C refrigerant 
pressure sensor 
signal (if equipped)

1.38 – 1.52 V

Air conditioning system is 
not operated while engine 
is running and A/C 
refrigerant pressure is 800 
kPa (116 psi).

Output signal varies 
linearly depending on the 
A/C refrigerant pressure.

2.15 – 2.38 V

Air conditioning system is 
operation while engine is 
running and when A/C 
refrigerant pressure is 
1400 kPa (203 psi).

—

2.67 – 2.95 V

Air conditioning system is 
operation while engine is 
running and when A/C 
refrigerant pressure is 
1800 kPa (261 psi).

—

49

GRY/

RED

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

4.5 – 5.5 V

Ignition switch is at ON 
position.

—

50

—

—

—

—

—

51

—

—

—

—

—

52

—

—

—

—

—

53

—

—

—

—

—

54

—

—

—

—

—

55

BRN/

RED

Ignition coil No.5 
output

0 – 0.6 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference 

waveform No.17: ”, 

“Reference waveform 

No.18: ” and 

“Reference waveform 

No.28: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active 
high pulse. Pulse 
frequency varies 
depending on the engine 
speed.

56

BRN/

WHT

Ignition coil No.3 
output

0 – 0.6 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference 

waveform No.17: ”, 

“Reference waveform 

No.19: ” and 

“Reference waveform 

No.28: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active 
high pulse. Pulse 
frequency varies 
depending on the engine 
speed.

Terminal 

No.

Wire 

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis:  1A-208

57

BRN

Ignition coil No.1 
output

0 – 0.6 V

Ignition switch is at ON 
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference 

waveform No.17: ”, 

“Reference waveform 

No.20: ” and 

“Reference waveform 

No.28: ”.

Engine is running at 
specified idle speed after 
warmed up engine.

Output signal is active 
high pulse. Pulse 
frequency varies 
depending on the engine 
speed.

58

BLK/

YEL

Ground for ECM

Below 0.3 V

Ignition switch is at ON 
position.

—

59

BLK/

YEL

Ground for ECM

Below 0.3 V

Ignition switch is at ON 
position.

—

60

—

—

—

—

—

61

—

—

—

—

—

62

—

—

—

—

—

63

—

—

—

—

—

64

RED

Ground for throttle 
position sensor

Below 0.3 V

Ignition switch is at ON 
position.

—

65

GRN

Throttle position 
sensor signal (sub)

4.22 – 4.58 V

Ignition switch is at ON 
position and accelerator 
pedal is not depressed 
after warmed up engine.

Output signal varies 
linearly depending on the 
throttle valve opening.

0.58 – 0.95 V

Ignition switch is at ON 
position and accelerator 
pedal is at fully depressed 
position after warmed up 
engine.

66

WHT/

RED

CMP sensor signal

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference 

waveform No.16: ”, 

“Reference waveform 

No.28: ” and 

“Reference waveform 

No.29: ”.

Engine running at 
specified idle speed after 
warmed up engine.

Sensor signals are pulse. 
Pulse frequency varies 
depending on the engine 
speed.

67

GRY/

GRN

Ground for MAP 
sensor (if 
equipped), A/C 
refrigerant 
pressure sensor (if 
equipped), engine 
coolant 
temperature 
sensor, IAT sensor 
and heated oxygen 
sensor-2 (if 
equipped)

Below 0.3 V

Ignition switch is at ON 
position.

—

Terminal 

No.

Wire 

color

Circuit

Normal voltage

Condition

Remarks