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Home >> Hyundai >> 2025 >> Elantra SE >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.0L (Except HEV) >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Terminal Function >> Connector [B]
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Connector [B]

Pin No Description
1 Main Relay 'ON' Signal Input (Main Relay)
2 Main Relay 'ON' Signal Input (Main Relay)
3 Chassis Ground
4 Chassis Ground
5 Battery power (B+) (Battery)
6 P-CAN (High)
7 P-CAN (Low)
8 Fuel Tank Pressure Sensor Signal input
9 Electric EGR Control Valve (EEGR) Signal Input
10 Sensor Ground (Electric EGR Control Valve (EEGR))
11 -
12 -
13 Oil Pressure Sensor (OPS) Signal
14 Camshaft Position Sensor (CMPS) [Bank 1/Intake] Signal
15 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] Signal
16 Throttle Position Sensor (TPS) #1 Signal
17 Sensor Power (+5V) (Throttle Position Sensor (TPS))
18 -
19 -
20 -
21 -
22 -
23 Cooling Fan [High] Relay Control Output
24 Ignition Coil (Cylider #4) Control [With Smart Key]
Ignition Coil (Cylider #1) Control [Without Smart Key]
25 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater Control
26 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater Control
27 -
28 -
29 L-CAN (High)
30 L-CAN (Low)
31 Engine Coolant Temperature Sensor (ECTS) #2 Signal
32 -
33 -
34 Engine Coolant Temperature Sensor (ECTS) #1 Signal
35 Sensor Power (+5V) (Crankshaft position Sensor (CKPS))
Sensor Power (+5V) (Manifold Absolute Pressure Sensor (MAPS))
Sensor Power (+5V) (Camshaft Position Sensor (CMPS) [Bank 1/Intake])
36 Oil Temperature Sensor (OTS) Signal
37 Sensor Ground (Camshaft Position Sensor (CMPS) [Bank 1/Intake])
38 Sensor Ground (Camshaft Position Sensor (CMPS) [Bank 1/Exhaust])
39 Throttle Position Sensor (TPS) #2 Signal
40 -
41 -
42 Fuel Pump Relay Control
43 Main Relay 'ON' Signal Input (Main Relay)
44 DC-DC Converter (LDC) [With ISG]
45 Oil Pump Solenoid Valve Control Output
46 Electric load signal input [Defrost]
47 Ignition Coil (Cylider #2) Control [With Smart Key]
Ignition Coil (Cylider #3) Control [Without Smart Key]
48 ETC Motor [+] Control
49 ETC Motor [-] Control
50 -
51 ON/START Signal Input
52 -
53 Sensor Ground (Fuel Tank Pressure Sensor (FTPS))
54 Sensor Ground (Engine Coolant Temperature Sensor (ECTS) #2)
55 -
56 -
57 Sensor Ground (Engine Coolant Temperature Sensor (ECTS) #1)
58 Sensor Ground (Manifold Absolute Pressure Sensor (MAPS))
59 Sensor Ground (Oil Pressure & Temperature Sensors (OPTS))
60 -
61 -
62 Sensor Ground (Throttle Position Sensor (TPS))
63 -
64 ISG OFF Switch Lamp Control Output
65 Starter Relay [Low] Control Output
66 -
67 -
68 -
69 -
70 Variable Force Solenoid (VFS) [Bank 1/Exhaust] Control
71 Variable Force Solenoid (VFS) [Bank 1/Intake] Control
72 Integrated Thermal Management Module (ITM) Motor (+)
73 Electric EGR Control Valve (EEGR) Motor (+) Control Output
74 -
75 -
76 -
77 LIN communication signal input
78 -
79 Sensor Ground (Integrated Thermal Management Module (ITM))
80 Sensor Ground (Crankshaft Position Sensor (CKPS))
81 Manifold Absolute Pressure Sensor (MAPS) Signal
82 -
83 Sensor Ground (Mass Air Flow Sensor (MAFS))
84 -
85 -
86 Mass Air Flow Sensor (MAFS) Signal input
87 -
88 Cooling Fan [Low] Relay Control Output
89 Purge Control Solenoid Valve (PCSV) Control
90 Canister Close Valve (CCV) Control
91 -
92 Variable Intake Solenoid (VIS) Valve Control
93 Ignition Coil (Cylider #1) Control [With Smart Key]
Ignition Coil (Cylider #4) Control [Without Smart Key]
94 Injector (Cylinder #4) Control
95 Integrated Thermal Management Module (ITM) Motor (-)
96 Electric EGR Control Valve (EEGR) Motor (-) Control Output
97 -
98 -
99 Immobilizer Data Line Signal Input
100 -
101 -
102 Integrated Thermal Management Module (ITM) Motor Signal
103 Crankshaft Position Sensor (CKPS) Signal Input
104 Manifold Absolute Pressure Sensor (MAPS) Signal
105 -
106 -
107 -
108 Sensor Power (+5V) (Electric EGR Control Valve (EEGR))
Sensor Power (+5V) (Camshaft Position Sensor (CMPS) [Bank 1/Exhaust])
109 Sensor Power (+5V) (Integrated Thermal Management Module (ITM) Motor)
Sensor Power (+5V) (Oil Pressure & Oil Temperature Sensor (OPTS))
Sensor Power (+5V) (Fuel Tank Pressure Sensor (FTPS))
Sensor Power (+5V) (Mass Air Flow Sensor (MAFS))
110 Engine Speed Control Output
111 -
112 -
113 Starter Relay [High] Control Output
114 -
115 -
116 Ignition Coil (Cylider #3) Control [With Smart Key]
Ignition Coil (Cylider #2) Control [Without Smart Key]
117 Injector (Cylinder #1) Control
118 Injector (Cylinder #3) Control
119 Injector (Cylinder #2) Control