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ECM TERMINAL INPUT/OUTPUT SIGNAL

Pin No.

Description

Input, Output Value

Vehicle State

Test Result

Type

Range

1

ECU groud

Static Signal

0 ~ 0.5V

Always

0.3V

2

Power stage groud

Static Signal

0 ~ 0.5V

Always

0.3V

3

Direct battery voltage supply

Static Signal

Vbatt

Others

12.5 V

(Vbatt Level)

Running

13.7 V

(Vbatt Level)

4

Ignition coil output 1,4

Pulse

Engine run

High: 14.03V

Low: 0.78~1.13V

Peak voltage: 348V

Idle : 17.2Hz

5

Ignition coil output 2,3

Pulse

Engine run

High: 14.03V

Low: 0.78~1.13V

Peak voltage: 348V

Idle : 17.2Hz

6

CAN LOW

DC

2.0 ~ 3.0V

Recessive

 

PWM

0.5 ~ 2.25V

Dominant

7

CAN HIGH

DC

2.0 ~ 3.0V

Recessive

 

PWM

2.75~4.5V

Dominant

8

HO2S Heater (B1/S1)

PWM

Engine run

High: 14.01V

Low: 0.4V

Frequency:10Hz

9

HO2S Heater (B1/S2)

PWM

Engine run

High: 14.01V

Low: 0.4V

Frequency:10Hz

10

Knock Sensor Input

Frequency

-0.5 ~ 0.7V

0V

Knocking

normal

0.3V

0V

11

CVVT Oil Control Valve output

PWM

Engine run

High: 14.01V

Low: 0.4V

Frequency: 300Hz

12

Not connected

       

13

Not connected

       

14

Battery Voltage Supply after Main Relay

DC

Vbatt

IG ON

12.7V

0 ~ 0.5V

IG OFF

0.3V

15

Not connected

       

16

Not connected

       

17

Wheel Speed Sensor(-)

Sensor

signal

Approximately

50rpm: 37Hz, 236mV pk-pk

100rpm: 76Hz, 376mV pk-pk

1000rpm: 769Hz, 1.64V pk-pk

Vehicle run

18

Wheel Speed Sensor(+)

Sensor

signal

Approximately

50rpm: 37Hz, 236mV pk-pk

100rpm: 76Hz, 376mV pk-pk

1000rpm: 769Hz, 1.64V pk-pk

Vehicle run

19

Linear lambda VG

Complex Signal

     

20

Not connected

       

21

Battery Voltage Supply after Main Relay

Static Signal

Vbatt

IG ON

12.7V

0 ~ 0.5V

IG OFF

0.3V

22

Battery Voltage Supply after Ignition Key

Static Signal

Vbatt

IG ON

12.7V

0 ~ 0.5V

IG OFF

0.3V

23

Injector output (cyl. 4)

Frequency

Idle: 6.25Hz

3000rpm: 12.6Hz

High: 14.01V

Low: 0.3V

Peak voltage: 58V

24

Injector output (cyl. 1)

Frequency

Idle: 6.25Hz

3000rpm: 12.6Hz

High: 14.01V

Low: 0.3V

Peak voltage: 58V

25

Spare Sensor supply

Static Signal

Vcc

IG ON

5V

0 ~ 0.5V

IG OFF

0.3V

26

Purge Control Solenoid Valve (PCSV) PWM output

PWM

Pulse

Inactive

Active

(after warm up & racing)

High: 14.01V

Low: 0.3V

Frequency: 20Hz

27

Crankshaft Position Sensor ground

Static Signal

0 ~ 0.5V

Always

0.2 V

28

Not connected

       

29

Crankshaft Position Sensor input

Frequency

Idle: 740Hz

5V

3000rpm: 3126Hz

0.3V

30

Camshaft Position Sensor ground

Static Signal

 

Always

 

31

Engine Coolant Temperature Sensor input

Analog

-40 °C ~ 293 °C

4.9V ~ 0.322V

176°C

1.25V

32

Throttle Position Sensor input

Analog

0.25 ~ 0.8V

Idle

0.3V

4.15 ~ 4.7V

W.O.T

4.16V

33

Fuel Tank Pressure Sensor input

Analog

 

Engine run

2.3V

34

Fuel Tank Pressure Sensor ground

Static Signal

0 ~ 0.5V

Always

0.3V

35

Not connected

       

36

Not connected

       

37

HO2S (B1/S2) ground

Static Signal

0 ~ 0.5V

Always

0.3V

38

Throttle Position Sensor ground

Static Signal

0 ~ 0.5V

Always

0.3V

39

Vehicle Speed Sensor input

Pulse

Vehicle run

High : 5V

Low : 0.9V

40

Linear lambda VIP

Complex Signal

     

41

Linear lambda VN

Complex Signal

     

42

HO2S (B1/S2) input

Analog Pulse

3000rpm

After warm up

0.8V

0.1V

Frequency: 1.1Hz

43

Not Connected

       

44

MAFS, IATS supply

Static Signal

5V

IG ON

5.1V

0 ~ 0.5V

IG OFF

0.3V

45

Throttle Position Sensor supply

Static Signal

5V

IG ON

4.9V

0 ~ 0.5V

IG OFF

0.4V

46

Spare Sensor supply 2

Static Signal

5V

IG ON

5V

0 ~ 0.5V

IG OFF

0.3V

47

Immobilizer Data Line

Pulse

IG ON

High: 14V

Low: 0.5V

48

MAFS, IATS ground

Static Signal

0 ~ 0.5V

Always

0.4V

49

Not connected

       

50

Air Conditioner Compressor Switch input

DC

Vbatt

SW ON

13V

0 ~ 0.5V

SW OFF

0.3V

51

Air Conditioner Pressure switch input

DC

Vbatt

SW ON

12.9V

0 ~ 0.5V

SW OFF

0.4V

52

Oil Temperature Sensor input

Analog

-40 °C ~ 266 °C

4.9V ~ 0.4V

183.2 °C

1.29V

53

Linear Lambda VRC

Complex Signal

     

54

Knock Sensor ground

Static Signal

0 ~ 0.5V

Always

0.3V

55

Ignition shield ground

Static Signal

0 ~ 0.5V

Always

0.3V

56

Intake Air Temperature Sensor input

Analog

-40 °C ~ 266 °C

4.9V ~ 0.34V

Idle

2.3V

57

Not connected

       

58

Air Conditioner Request Switch input

DC

Vbatt

SW ON

12.9V

0 ~ 0.5V

SW OFF

0.4V

59

Sensor ground

Static Signal

0 ~ 0.5V

Always

0.3V

60

Mass Air Flow Sensor signal input

Analog

 

Idle

1.0V

 

3000 rpm

2.3V

61

Injector output (cyl.3)

Frequency

Idle: 6.25Hz

3000rpm: 12.6Hz

High: 14.01V

Low: 0.3V

Peak voltage: 58V

62

Injector output (cyl.2)

Frequency

Idle: 6.25Hz

3000rpm: 12.6Hz

High: 14.01V

Low: 0.3V

Peak voltage: 58V

63

Not connected

       

64

Cooling Fan Relay - High control output

DC

Vbatt

SW OFF

12.9V

 

SW ON

0.4V

65

Cooling Fan Relay - Low control output

DC

Vbatt

SW OFF

13V

 

SW ON

0.5V

66

Engine Speed signal output

Frequency

Engine run

High: 10.5V

Low: 0.4V

Idle: 24.7Hz

3000 rpm: 104.6Hz

67

Main Relay control output

DC

0 ~ 1V

IG ON

0.9V

Vbatt

IG OFF

13.5V

68

Air Conditioner Compressor Relay control output

DC

0 ~ 0.5V

A/C ON

0.2V

Vbatt

A/C OFF

12.5V

69

Fuel Pump Relay control output

DC

Vbatt

IG ON

13.08V

0 ~ 0.5V

Idle

0.3V

70

Malfunction Indicator Lamp (MIL) output

DC

0 ~ 0.5V

IG ON

0.4V

Vbatt

Vbatt

13.6V

71

Immobilizer ground

Static Signal

0 ~ 0.5V

Always

0.4V

72

Camshaft Position Sensor input

Frequency

Idle: 6.3 Hz

3000 rpm: 25 Hz

High: 5V

Low: 0.6V

73

Engine Coolant Temperature Sensor ground

Static Signal

0 ~ 0.5V

Always

0.4V

74

Throttle Position PWM output

PWM

Engine run

High: 12.75V

Low: 0.5V

Frequency: 100Hz

C.T: 5% duty

W.O.T : 90% duty

75

Fuel Consumption signal output

PWM

Engine run

High: 12.75V

Low: 0.5V

Frequency: 100Hz

76

Oil Temperature Sensor ground

Static Signal

0 ~ 0.5V

Always

0.4V

77

Diagnosis line (k-line)

Pulse

IG ON

High: 14V

Low: 0.5V

78

Idle Speed Control Actuator PWM output2

PWM

Idle

High : 15V

Low : 0.3V

Frequency: 250Hz

79

Canister Close Valve output

PWM

Pulse

Engine run

High: 14.01V

Low: 0.3V

Peak voltage: 58V

Frequency: 10Hz

80

Idle Speed Control Actuator PWM output1

PWM

Idle

High : 15V

Low : 0.3V

Frequency: 250Hz

81

Malfunction Indicator Lamp output

DC

0 ~ 0.5V

IG ON

0.4V

Vbatt

Cranking

13.6V

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