Hyundai Elantra: Engine Control System / Engine Control Module (ECM) Schematic Diagrams

ECM Terminal And Input/Output signal
Harness Connector

ECM Terminal Function
Connector [C300-A]
Pin No.
Description
Connected to
1
-

2
ETC Motor [+] control output
ETC Motor
3
-

4
Motor [-] control output
Variable Charge Motion Actuator (VCMA)
5
-

6
-

7
-

8
-

9
-

10
Clutch switch signal input [M/T]
Clutch switch
11
-

12
-

13
-

14
-

15
Sensor ground
Engine Coolant Temperature Sensor (ECTS)
16
Engine Coolant Temperature Sensor (ECTS) signal input
Engine Coolant Temperature Sensor (ECTS)
17
Throttle Position Sensor (TPS) 2 signal input
Throttle Position Sensor (TPS) 2
18
-

19
-

20
-

21
Sensor power (+5V)
Manifold Absolute Pressure Sensor (MAPS)
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
22
-

23
ETC Motor [-] control output
ETC Motor
24
-

25
Motor [+] control output
Variable Charge Motion Actuator (VCMA)
26
-

27
-

28
-

29
-

30
-

31
Electrical load signal input
Alternator
32
-

33
-

34
-

35
-

36
-

37
Sensor ground
Throttle Position Sensor (TPS) 1,2
38
Throttle Position Sensor (TPS) 1 signal input
Throttle Position Sensor (TPS) 1
39
-

40
Alternator PWM control output
Alternator
41
-

42
Sensor power (+5V)
Throttle Position Sensor (TPS) 1,2
43
-

44
-

45
-

46
-

47
-

48
-

49
-

50
-

51
-

52
-

53
-

54
VCMA Feedback ground
Variable Charge Motion Actuator (VCMA)
55
-

56
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] 
57
-

58
-

59
-

60
-

61
Sensor ground
Manifold Absolute Pressure Sensor (MAPS)
62
Manifold Absolute Pressure Sensor (MAPS) signal input 
Manifold Absolute Pressure Sensor (MAPS)
63
Sensor power (+5V)
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] 
Variable Charge Motion Actuator (VCMA)
65
-

66
-

67
-

68
-

69
-

70
-

71
-

72
-

73
-

74
Sensor ground
Crankshaft Position Sensor (CKPS)
75
-

76
VCMA Feedback signal input
Variable Charge Motion Actuator (VCMA)
77
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] 
78
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
79
-

80
-

81
-

82
-

83
VG (Virtual Ground)
Heated Oxygen Sensor [Bank 1/Sensor 1]
84
VRC (Current Adjust)
Heated Oxygen Sensor [Bank 1/Sensor 1]
85
-

86
-

87
-

88
-

89
-

90
-

91
-

92
-

93
-

94
-

95
Crankshaft Position Sensor (CKPS) signal input
Crankshaft Position Sensor (CKPS)
96
-

97
-

98
Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
99
Sensor ground
Knock Sensor (KS)
100
Knock Sensor (KS) signal input
Knock Sensor (KS)
101
Intake Air Temperature Sensor (IATS) signal input
Intake Air Temperature Sensor (IATS)
102
-

103
-

104
VN (NERNST Cell Voltage)
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
105
VIP (Current Pump)
Heated Oxygen Sensor [Bank 1/Sensor 1]

Connector [C300-B]
Pin No.
Description
Connected to
1
Power ground
Chassis Ground
2
Power ground
Chassis Ground
3
Battery power (B+)
Main Relay
4
Power ground
Chassis Ground
5
Battery power (B+)
Main Relay
6
Battery power (B+)
Main Relay
7
-

8
FLEX-RAY (High)
Other control module, Data Link Connector (DLC)
9
-

10
Accelerator Position Sensor (APS) 2 signal input
Accelerator Position Sensor (APS) 2
11
A/C Pressure Transducer (APT) signal input
A/C Pressure Transducer (APT)
12
-

13
-

14
Sensor power (+5V)
A/C Pressure Transducer (APT)
Fuel Tank Pressure Sensor (FTPS) 
15
-

16
Sensor power (+5V)
Accelerator Position Sensor (APS) 2
17
Sensor power (+5V)
Accelerator Position Sensor (APS) 1
18
Main Relay control output
Main Relay
19
Fuel Pump Relay control output
Fuel Pump Relay
20
-

21
-

22
Injector (Cylinder #2) control output
Injector (Cylinder #2)
23
Injector (Cylinder #3) control output
Injector (Cylinder #3)
24
-

25
FLEX-RAY (Low)
Other control module, Data Link Connector (DLC)
26
Electrical signal input [Blower Max. Switch]
Heater & A/C Control module
27
Accelerator Position Sensor (APS) 1 signal input
Accelerator Position Sensor (APS) 1
28
Sensor ground
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
29
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
30
Fuel Tank Pressure Sensor signal input
Fuel Tank Pressure Sensor (FTPS) 
31
-

32
-

33
-

34
Start Motor relay control output 
Start Motor relay 
35
CVVT Oil Control (OCV) Valve [Bank 1/Exhaust] control output
CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] 
36
CVVT Oil Control (OCV) Valve [Bank 1/Intake] #1 control output
CVVT Oil Control Valve (OCV) [Bank 1/Intake] #1
37
-

38
A/C Relay control output
A/C Relay
39
Injector (Cylinder #4) control output
Injector (Cylinder #3)
40
Ignition Coil (Cylinder #2) control output 
Ignition Coil (Cylinder #2) [NON-Immobilizer type]
Ignition Coil (Cylinder #3) control output 
Ignition Coil (Cylinder #3) [Immobilizer type]
41
Battery power (B+)
Ignition Switch
42
-

43
-

44
-

45
Sensor ground
Accelerator Position Sensor (APS) 1
Components and Components Location
Components Location 1. Engine Control Module (ECM)2. Manifold Absolute Pressure Sensor (MAPS)3. Intake Air Temperature Sensor (IATS)4. Engine Coolant Temperature Sensor (ECTS)5. Throttle Position ...

Engine Control Module (ECM) Repair procedures
Removal     • When replacing the ECM, the vehicle equipped withthe immobilizer must be performed procedure asbelow. [In the case of installing used ECM] 1) Perform "ECM Neu ...

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