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Home >> Hyundai >> 2021 >> 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 and Input/Output Signal >> ECM Terminal Function
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ECM Terminal Function

CONNECTOR A DESCRIPTION

Pin No Description
1 Chassis Ground
2 -
3 -
4 -
5 -
6 Fuel Sender Signal Input
7 -
8 -
9 Neutral Switch [With ISG]
10 -
11 -
12 Sensor Shield (Knock Sensor (KS))
13 -
14 ISG OFF Switch Signal Input
15 Brake [Light] Switch Signal Input
16 Brake [Test] Switch Signal Input
17 -
18 -
19 -
20 Sensor Power (+5V) (Speed Sensor)
21 -
22 -
23 -
24 -
25 -
26 -
27 -
28 L-CAN (Low)
29 L-CAN (High)
30 -
31 -
32 -
33 -
34 -
35 -
36 -
37 -
38 A/C Pressure Transducer (APT) Signal Input
39 -
40 -
41 -
42 -
43 Speed Sensor Signal input
44 -
45 -
46 -
47 -
48 -
49 -
50 -
51 Ignition Lock Switch Signal Input
52 -
53 -
54 -
55 -
56 Sensor Ground (Accelerator Position Sensor (APS) #2)
57 Sensor Ground (Accelerator Position Sensor (APS) #1)
58 -
59 -
60 -
61 Sensor Ground (A/C Pressure Transducer (APT))
62 -
63 -
64 -
65 -
66 -
67 -
68 -
69 -
70 -
71 -
72 -
73 -
74 Engine Start Switch Signal Input
75 -
76 Vehicle Speed Input
77 -
78 Sensor Ground (Brake Booster Vaccum Pressure Sensor (BBVPS))
79 Accelerator Position Sensor (APS) #2 Signal input
80 Accelerator Position Sensor (APS) #1 Signal input
81 -
82 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] V_N
83 Sensor Ground (Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2])
84 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] V_RC
85 -
86 -
87 -
88 -
89 -
90 -
91 -
92 -
93 -
94 -
95 -
96 Battery power (B+) (Battery)
97 Wiper "P" Position Input
98 -
99 Clutch Switch
100 -
101 Brake Booster Vaccum Pressure Sensor (BBVPS) Signal Input
102 Sensor Power (+5V) (Accelerator Position Sensor (APS) #2)
103 Sensor Power (+5V) (Accelerator Position Sensor (APS) #1)
104 Sensor Power (+5V) (Brake Booster Vaccum Pressure Sensor (BBVPS)) Sensor Power (+5V) (A/C Pressure Transducer (APT))
105 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] V_G
106 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Signal
107 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] V_IP
108 -
109 Sensor Ground (Knock Sensor (KS))
110 Knock Sensor (KS) Signal
111 -
112 -
113 -
114 -
115 -
116 -
117 -
118 -
119 Battery power (B+) (Battery)
CONNECTOR B DESCRIPTION

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 Soledoid 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