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Home >> Hyundai >> 2021 >> Sonata SE >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.5L (Except HEV) >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Connector and Terminal Function >> ECM Terminal Function
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ECM Terminal Function

CONNECTOR A DESCRIPTION

Pin No Description Connected to
1 ECM Ground Chassis Ground
2 E-CVVT Motor [-] Control E-CVVT Motor
3 E-CVVT Motor [+] Control E-CVVT Motor
4 E-CVVT Relay Power E-CVVT Relay
5 -  
6 Sensor Power (+5V) Throttle Position Sensor (TPS)
7 -  
8 -  
9 -  
10 Oil Temperature Sensor (OPTS) Signal Input Oil Pressure & Temperature Sensor (OPTS)
11 Oil Pressure Sensor (OPTS) Signal Input  
12 -  
13 Sensor Ground Engine Coolant Temperature Sensor (ECTS) #3 (Cylinder Block Side)
14 Engine Coolant Temperature Sensor (ECTS) #3 Signal Input Engine Coolant Temperature Sensor (ECTS) #3 (Cylinder Block Side)
15 Intake Air Temperature Sensor (IATS) Signal Input Intake Air Temperature Sensor (IATS)
16 -  
17 -  
18 -  
19 -  
20 -  
21 -  
22 -  
23 -  
24 -  
25 ECM Ground Chassis Ground
26 -  
27 -  
28 -  
29 Throttle Position Sensor (TPS) #1 Signal Input Throttle Position Sensor (TPS) #1
30 Throttle Position Sensor (TPS) #2 Signal Input Throttle Position Sensor (TPS) #2
31 -  
32 -  
33 Sensor Ground Oil Pressure & Temperature Sensor (OPTS)
34 -  
35 Engine Coolant Temperature Sensor (ECTS) #1 Signal Input Engine Coolant Temperature Sensor (ECTS) #1 (ITM Side)  
36 Engine Coolant Temperature Sensor (ECTS) #2 Signal Input Engine Coolant Temperature Sensor (ECTS) #2 (Water Pump Side)
37 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] Signal Input Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
38 Camshaft Position Sensor (CMPS) [Bank 1/Intake] Signal Input Camshaft Position Sensor (CMPS) [Bank 1/Intake]
39 -  
40 -  
41 -  
42 -  
43 -  
44 -  
45 -  
46 -  
47 -  
48 ECM Ground Chassis Ground
49 -  
50 -  
51 Knock Sensor (KS) Signal Input Knock Sensor (KS)
52 Sensor Ground  
53 Sensor Ground Throttle Position Sensor (TPS)
54 -  
55 EGR Valve Feedback Signal Input EGR Valve
56 -  
57 -  
58 Sensor Ground Engine Coolant Temperature Sensor (ECTS) #1 (ITM Side)
59 Sensor Ground Engine Coolant Temperature Sensor (ECTS) #2 (Water Pump Side)
60 Sensor Ground Manifold Absolute Pressure Sensor (MAPS)
Intake Air Temperature Sensor (IATS)
61 Sensor Ground Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
62 Sensor Ground Camshaft Position Sensor (CMPS) [Bank 1/Intake]
63 -  
64 -  
65 -  
66 -  
67 -  
68 -  
69 -  
70 -  
71 -  
72 -  
73 -  
74 NERNST Cell Voltage Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
75 VS-/IP- (Virtual Ground) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
76 Rc (Correction Resistance) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
77 Sensor Ground Brake Booster Vacuum Pressure Sensor (BBVPS)
78 Sensor Ground EGR Valve
79 -  
80 -  
81 Rail Pressure Sensor (RPS) Signal Input Rail Pressure Sensor (RPS)
82 -  
83 Sensor Ground Rail Pressure Sensor (RPS)
84 Sensor Ground Crankshaft Position sensor (CKPS)
85 -  
86 -  
87 -  
88 -  
89 -  
90 -  
91 -  
92 EGR Valve Motor [+] Control EGR Valve Motor
93 ETC Motor [+] Control ETC Motor
94 -  
95 -  
96 ITM Motor [+] Control ITM Motor
97 VG Virtual Ground Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
98 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Signal Input Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
99 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] (V_IP) Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
100 Brake Booster Vacuum Pressure Sensor (BBVPS) Signal Input Brake Booster Vacuum Pressure Sensor (BBVPS)
101 Sensor Power (+5V) Oil Pressure & Temperature Sensor (OPTS) Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
102 Sensor Power (+5V) Brake Booster Vacuum Pressure Sensor (BBVPS) EGR Valve
103 Sensor Power (+5V) Rail Pressure Sensor (RPS)
Crankshaft Position sensor (CKPS)
104 Sensor Power (+5V) Manifold Absolute Pressure Sensor (MAPS)
Intake Air Temperature Sensor (IATS)
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
105 Manifold Absolute Pressure Sensor (MAPS) Signal Input Manifold Absolute Pressure Sensor (MAPS)
106 -  
107 Crankshaft Position sensor (CKPS) Signal Input Crankshaft Position sensor (CKPS)
108 -  
109 -  
110 -  
111 -  
112 -  
113 -  
114 -  
115 EGR Valve Motor [-] Control EGR Valve Motor
116 ETC Motor [-] Control ETC Motor
117 -  
118 -  
119 ITM Motor [-] Control ITM Motor
CONNECTOR B DESCRIPTION

Pin No Description Connected to
1 Battery Power (B+) Main Relay
2 Battery Power (B+) Main Relay
3 Battery Power (B+) Main Relay
4 ECM Ground Chassis Ground
5 Battery Power (B+) Main Relay
6 P-CAN (High) Other control module, Data Link Connector (DLC)
7 P-CAN (Low) Other control module, Data Link Connector (DLC)
8 -  
9 -  
10 Sensor Power (+5V) Accelerator Pedal Position Sensor (APS) #2 Fuel Tank Pressure Sensor (FTPS)
11 Sensor Power (+5V) Mass Air Flow Sensor (MAFS) ITM Motor and Position Sensor
12 Sensor Power (+5V) Accelerator Pedal Position Sensor (APS) #1
13 Mass Air Flow Sensor (MAFS) Signal Input Mass Air Flow Sensor (MAFS)
14 -  
15 -  
16 Vehicle Speed Signal Input ABS Module
17 Ignition Feedback 'A' (Cylinder #4) Signal Input Ignition Coil (Cylinder #4)
18 Ignition 'D' (Cylinder #3) Signal Input Ignition Coil (Cylinder #3)
19 -  
20 -  
21 Variable Oil Pump Solenoid Valve Signal Input Variable Oil Pump Solenoid Valve
22 ISG Inhibition Lamp Signal Input ISG Inhibition Lamp
23 ISG Starter Relay (High-side) ISG Starter Relay
24 MPI Injector (Cylinder #4) Control MPI Injector (Cylinder #4)
25 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater Control Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
26 27 High Pressure Fuel Pump [Low] Control High Pressure Fuel Pump [High] Control High Pressure Fuel Pump
28 -  
29 Local-CAN (High) Other control module, Data Link Connector (DLC)
30 Local-CAN (Low)  
31 Starter Motor Control Switch Signal Input Starter Motor Control Switch
32 A/C Pressure Transducer (APT) Signal Input A/C Pressure Transducer (APT)
33 Accelerator Pedal Position Sensor (APS) #2 Signal Input Accelerator Pedal Position Sensor (APS) #2
34 Accelerator Pedal Position Sensor (APS) #1 Signal Input Accelerator Pedal Position Sensor (APS) #1
35   -
36 Sensor Ground Mass Air Flow Sensor (MAFS)
37 -  
38 -  
39 Wiper 'P' Signal Input Head Lamp Switch Signal Input Multifunction Switch
40 Ignition Feedback 'B' (Cylinder #2) Control Ignition Coil (Cylinder #2)
41 Ignition 'A' (Cylinder #4) Control Ignition Coil (Cylinder #4)
42 Immobilizer Lamp Signal Input Immobilizer Control Module
43 -  
44 E-CVVT Relay Control E-CVVT Relay
45 Purge Control Solenoid Valve (PCSV) Control Purge Control Solenoid Valve (PCSV)
46 -  
47 MPI Injector (Cylinder #2) Control MPI Injector (Cylinder #2)
48 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater Control Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
49 GDI Injector (Cylinder #1) [High] Control GDI Injector (Cylinder #1)
50 GDI Injector (Cylinder #4) [High] Control GDI Injector (Cylinder #4)
51 Start Relay Control Start Relay
52 Local-CAN (High) Control  
53 Local-CAN (Low) Control Other control module, Data Link Connector (DLC)
54 Start Signal Input Start Relay
55 Sensor Ground A/C Pressure Transducer (APT)
56 Sensor Ground Accelerator Pedal Position Sensor (APS) #2
57 Sensor Ground Accelerator Pedal Position Sensor (APS) #1
58 -  
59 -  
60 Sensor Ground Fuel Tank Pressure Sensor (FTPS)
61 -  
62 -  
63 Brake Switch (test) Signal Input Brake Switch
64 Ignition 'C' (Cylinder #1) Control Ignition Coil (Cylinder #1)
65 Cooling Fan Control Relay [High] Control Cooling Fan Control Relay
66 -  
67 Electric Fuel Pump Relay Control Electric Fuel Pump Relay
68 -  
69 Variable Intake Solenoid (VIS) Valve Control Variable Intake Solenoid (VIS) Valve
70 -  
71 CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] Control CVVT Oil Control Valve (OCV) [Bank 1/Exhaust]
72 -  
73 GDI Injector (Cylinder #1) [Low] Control GDI Injector (Cylinder #1)
74 -  
75 -  
76 -  
77 LIN1 Communication Other control module, Data Link Connector (DLC)
78 Sensor Ground ITM Motor and Position Sensor
79 -  
80 -  
81 -  
82 Fuel Tank Pressure Sensor (FTPS) Signal Input Fuel Tank Pressure Sensor (FTPS)
83 -  
84 -  
85 -  
86 -  
87 Ignition 'B' (Cylinder #2) Control Ignition Coil (Cylinder #2)
88 Main Relay Control Main Relay
89 Engine Speed Signal Output Smart Key Control Module
90 -  
91 -  
92 -  
93 MPI Injector (Cylinder #3) Control MPI Injector (Cylinder #3)
94 -  
95 GDI Injector (Cylinder #2) [High] Control GDI Injector (Cylinder #2)
96 GDI Injector (Cylinder #3) [High] Control GDI Injector (Cylinder #3)
97 Wheel Speed Sensor (+)  
98 Wheel Speed Sensor (-)  
99 Immobilizer (Smart Key) Communication Line Smart Key Control Module
100 LIN2 Communication Other control module, Data Link Connector (DLC)
101 ITM Motor and Position Sensor Signal Input ITM Motor and Position Sensor
102 Blower Max Detection Switch Signal Output Blower Switch
103 ISG Inhibition Switch Signal Output ISG Inhibition Switch
104 -  
105 Fuel Level Sender (FLS) Signal Output Fuel Level Sender (FLS)
106 -  
107 A/C ON/OFF Switch Control A/C ON/OFF Switch
108 A/C Compressor Switch Control A/C Compressor Switch
109 Brake Switch (lamp) Signal Input Brake Switch
110 LSD Starter Relay Control LSD Starter Relay
111 Starter Relay Information Input Starter Relay
112 Cooling Fan Control Relay [Low] Control Cooling Fan Control Relay
113 A/C Compressor Relay Control A/C Compressor Relay
114 Canister Close Valve (CCV) Signal Input Canister Close Valve (CCV)
115 -  
116 MPI Injector (Cylinder #1) Control MPI Injector (Cylinder #1)
117 GDI Injector (Cylinder #3) [Low] Control GDI Injector (Cylinder #3)
118 GDI Injector (Cylinder #2) [Low] Control GDI Injector (Cylinder #2)
119 GDI Injector (Cylinder #4) [Low] Control GDI Injector (Cylinder #4)