Hyundai Elantra: ECM Terminal And Input/Output signal (A/T) - Engine Control Module (ECM). Schematic 
Diagrams - Engine Control System - Fuel System - Hyundai Elantra MD 2010-2018 Service manualHyundai Elantra: ECM Terminal And Input/Output signal (A/T)


ECM Terminal Function
Connector [CNG-AA]
Pin No.
Description
Connected to
1
Ignition Coil (Cylinder #2) control output
Ignition Coil (Cylinder #2) [Without Immobilizer]
Ignition Coil (Cylinder #3) control output
Ignition Coil (Cylinder #3) [With Immobilizer]
2
-
 
3
-
 
4
-
 
5
-
 
6
-
 
7
-
 
8
-
 
9
-
 
10
-
 
11
Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
12
Sensor power (+5V)
Variable Charge Motion Actuator (VCMA)
Battery Sensor 
13
-
 
14
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
15
-
 
16
Sensor feedback signal input
Variable Charge Motion Actuator (VCMA)
17
-
 
18
-
 
19
-
 
20
Sensor ground
Crankshaft Position Sensor (CKPS)
21
Motor [-] control output
Variable Charge Motion Actuator (VCMA)
22
Ignition Coil (Cylinder #4) control output
Ignition Coil (Cylinder #4) [Without Immobilizer]
Ignition Coil (Cylinder #1) control output
Ignition Coil (Cylinder #1) [With Immobilizer]
23
-
 
24
-
 
25
-
 
26
-
 
27
-
 
28
-
 
29
-
 
30
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
31
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
32
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
33
Sensor power (+5V)
Throttle Position Sensor (TPS) 1,2
34
-
 
35
Sensor ground
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
36
-
 
37
Sensor ground
Variable Charge Motion Actuator (VCMA)
38
-
 
39
-
 
40
-
 
41
Crankshaft Position Sensor (CKPS) signal input
Crankshaft Position Sensor (CKPS)
42
Motor [+] control output
Variable Charge Motion Actuator (VCMA)
43
-
 
44
-
 
45
-
 
46
-
 
47
-
 
48
-
 
49
-
 
50
-
 
51
-
 
52
-
 
53
-
 
54
Sensor ground
Throttle Position Sensor (TPS) 1, 2
55
-
 
56
Sensor shield ground
Knock Sensor (KS)
57
Immobilizer communication line
Immobilizer control module
58
Sensor ground
Battery Sensor 
59
Intake Air Temperature Sensor (IATS) signal input
Intake Air Temperature Sensor (IATS)
60
-
 
61
Sensor ground
Manifold Absolute Pressure Sensor (MAPS)
62
Sensor ground
Engine Coolant Temperature Sensor (ECTS)
63
Engine Coolant Temperature Sensor (ECTS) signal input
Engine Coolant Temperature Sensor (ECTS)
64
Ignition Coil (Cylinder #3) control output
Ignition Coil (Cylinder #3) [Without Immobilizer]
Ignition Coil (Cylinder #2) control output
Ignition Coil (Cylinder #2) [With Immobilizer]
65
-
 
66
-
 
67
-
 
68
-
 
69
-
 
70
-
 
71
-
 
72
-
 
73
-
 
74
-
 
75
Throttle Position Sensor (TPS) 2 signal input
Throttle Position Sensor (TPS) 2
76
-
 
77
Sensor ground
Knock Sensor (KS)
78
-
 
79
Battery Sensor signal 
Battery Sensor 
80
-
 
81
-
 
82
Manifold Absolute Pressure Sensor (MAPS) signal input
Manifold Absolute Pressure Sensor (MAPS)
83
VIP (Current Pump)
Heated Oxygen Sensor [Bank 1/Sensor 1]
84
VG (Virtual Ground)
Heated Oxygen Sensor [Bank 1/Sensor 1]
85
Ignition Coil (Cylinder #1) control output
Ignition Coil (Cylinder #1) [Without Immobilizer]
Ignition Coil (Cylinder #4) control output
Ignition Coil (Cylinder #4) [With Immobilizer]
86
-
 
87
-
 
88
-
 
89
-
 
90
-
 
91
-
 
92
-
 
93
-
 
94
-
 
95
-
 
96
Throttle Position Sensor (TPS) 1 signal input
Throttle Position Sensor (TPS) 1
97
-
 
98
Knock Sensor (KS) signal input
Knock Sensor (KS)
99
-
 
100
Battery Current Direct input
Battery Sensor 
101
-
 
102
-
 
103
Sensor power (+5V)
Manifold Absolute Pressure Sensor (MAPS)
104
VRC (Current Adjust)
Heated Oxygen Sensor [Bank 1/Sensor 1]
105
VN (NERNST Cell Voltage)
Heated Oxygen Sensor [Bank 1/Sensor 1]

Connector [CNG-AB]
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
-
 
9
-
 
10
Brake Test Switch signal input
Brake Switch
11
A/C Compressor switch signal output
A/C Compressor switch
12
-
 
13
Sensor power (+5V)
Fuel Tank Pressure Sensor (FTPS)
A/C Pressure Transducer (APT)
14
-
 
15
Electrical load signal input
Alternator
16
Alternator PWM control output
Alternator
17
-
 
18
Cooling Fan Relay [High] control output
Cooling Fan Relay [High]
19
Immobilizer Lamp control output
Immobilizer Lamp [Without Button Engine Start System]
20
ETC Motor [+] control output
ETC Motor
21
ETC Motor [-] control output
ETC Motor
22
Electrical load [Wiper] signal input
Wiper [Low] Relay
23
Injector (Cylinder #1) control output
Injector (Cylinder #1)
24
-
 
25
-
 
26
-
 
27
Brake Light Switch signal input
Brake Switch
28
A/C request switch signal output
Heater & A/C Control module
29
Sensor power (+5V)
Accelerator Position Sensor (APS) 1
30
Sensor power (+5V)
Accelerator Position Sensor (APS) 2
31
-
 
32
-
 
33
Cooling Fan Relay [Low] control output
Cooling Fan Relay [Low]
34
-
 
35
-
 
36
-
 
37
-
 
ECM Terminal And Input/Output signal (M/T)
ECM Terminal Function Connector [CNG-MA] Pin No. Description Connected to 1 Ignition Coil (Cylinder #1) control output ...

Circuit Diagram
(M/T) (A/T) ...