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

ECM Terminal And Input/Output signal

ECM Terminal Function
Connector [C500-A]
Pin No.
Description
Connected to
1
Injector (Cylinder #3) [High] control output
Injector (Cylinder #3)
2
Injector (Cylinder #4) [High] control output
Injector (Cylinder #4)
3
Injector (Cylinder #2) [Low] control output
Injector (Cylinder #2)
4
Electric Waste Gate Actuator (EWGA) DC Motor output (+)
Electric Waste Gate Actuator (EWGA)
5
Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1] heater control output
Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1]
6
-
?
7
-

8
-
?
9
Sensor ground
Electric Waste Gate Actuator (EWGA)
10
-
?
11
-
?
12
-

13
-
?
14
Cooling fan relay [High] control output
Cooling fan relay [High]
15
CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control output
CVVT Oil Control Valve (OCV) [Bank 1/Exhaust]
16
Injector (Cylinder #2) [High] control output
Injector (Cylinder #2)
17
Injector (Cylinder #1) [High] control output
Injector (Cylinder #1)
18
Injector (Cylinder #3) [Low] control output
Injector (Cylinder #3)
19
Electric Waste Gate Actuator (EWGA) DC Motor output (-)
Electric Waste Gate Actuator (EWGA)
20
Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor2] heater control output
Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor 2]
21
-
?
22
-
?
23
Engine Coolant Temperature Sensor (ECTS) signal input
Engine Coolant Temperature Sensor (ECTS)?
24
Sensor ground
Engine Coolant Temperature Sensor (ECTS) 
25
-
?
26
Fuel Tank Pressure Sensor (FTPS) signal input
Fuel Tank Pressure Sensor (FTPS)
27
Fuel pump relay control output (NON-Smart key type)
Fuel pump relay
Canister Close Valve (CCV) control output  (Smart key type)
Canister Close Valve (CCV)
28
-
?
29
-

30
-
?
31
Ignition coil (Cylinder #3) control output
Ignition coil (Cylinder #3)
32
Ignition coil (Cylinder #1) control output
Ignition coil (Cylinder #1)
33
Injector (Cylinder #1) [Low] control output
Injector (Cylinder #1)
34
Fuel Pressure Control Valve (FPCV) [High] control output
Fuel Pressure Control Valve (FPCV)
35
ETC motor [-] control output
ETC motor
36
-
?
37
Knock Sensor (KS) signal input
Knock Sensor (KS)
38
Sensor ground
Knock Sensor (KS)
39
-

40
Brake Light switch signal input
Brake switch
41
-

42
-

43
-
?
44
-
?
45
CVVT Oil Control Valve (OCV) [Bank 1/Intake] control output
CVVT Oil Control Valve (OCV) [Bank 1/Intake]
46
Ignition coil (Cylinder #4) control output
Ignition coil (Cylinder #4)
47
Ignition coil (Cylinder #2) control output
Ignition coil (Cylinder #2)
48
Injector (Cylinder #4) [Low] control output
Injector (Cylinder #4)
49
Fuel Pressure Control Valve (FPCV) [Low] control output
Fuel Pressure Control Valve (FPCV)
50
ETC motor [+] control output
ETC motor
51
-
?
52
Electric Waste Gate Actuator (EWGA) Feed beck signal
Electric Waste Gate Actuator (EWGA)
53
Brake Test switch signal input
Brake switch
54
-
?
55
-

56
Electric load signal input [Defrost]
Alternator
57
Alternator COM signal output
Alternator
58
Engine speed signal output
Cluster
59
Cooling fan relay [Low] control output
Cooling fan relay [Low]
60
-


Connector [C500-K]
Pin No.
Description
Connected to
1
ECM ground
Chassis ground
2
ECM ground
Chassis ground
3
ECM ground
Chassis ground
4
Battery power (B+)
Main relay
5
Battery power (B+)
Battery
6
Battery power (B+)
Battery
7
Battery power (B+)
Main relay
8
Sensor ground
Heated Oxygen Sensor  (HO2S) [Bank 1 / Sensor 2]
9
Accelerator Position Sensor (APS) 1 signal input
Accelerator Position Sensor (APS) 1
10
Sensor ground
Accelerator Position Sensor (APS) 2
11
-
?
12
Sensor ground
Fuel Tank Pressure Sensor (FTPS)
13
-
?
14
Throttle Position Sensor (TPS) 1 signal input
Throttle Position Sensor (TPS) 1
15
-
?
16
-
?
17
Fuel Level signal input
Fuel Level Sender (FLS)
18
Sensor power (+5V) 
Accelerator Position Sensor (APS) 2
19
Sensor power (+5V)
Electric Waste Gate Actuator (EWGA)
20
Sensor power (+5V) 
Rail Pressure Sensor (RPS)
Boost Pressure Sensor (BPS)
A/C Pressure Transducer (APT)
21
-
?
22
Wiper switch signal input
Wiper switch
23
-

24
Alternator PWM signal output [FR]
Alternator
25
-
?
26
-
?
27
-
?
28
-
?
29
Ignition switch signal input
Ignition switch
30
Heated Oxygen Sensor  (HO2S) [Bank 1 / Sensor 2] signal input
Heated Oxygen Sensor  (HO2S) [Bank 1 / Sensor 2]
31
Accelerator Position Sensor (APS) 2 signal input
Accelerator Position Sensor (APS) 2
32
Sensor ground
Accelerator Position Sensor (APS) 1
33
-

34
-
?
35
Sensor ground
Throttle Position Sensor (TPS) 1,2
36
Throttle Position Sensor (TPS) 2 signal input
Throttle Position Sensor (TPS) 2
37
-

38
-
?
39
Sensor power (+5V) 
Throttle Position Sensor (TPS) 1,2
40
Sensor power (+5V) 
Accelerator Position Sensor (APS) 1
41
Sensor power (+5V) 
Manifold Absolute Pressure Sensor (MAPS)
Fuel Tank Pressure Sensor (FTPS)
42
Sensor power (+5V) 
Camshaft Position Sensor (CMPS) [Bank 1 / Intake]
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
43
-

44
-

45
A/C Pressure Transducer (APT) signal input
A/C Pressure Transducer (APT)
46
Vehicle speed signal input
Vehicle Speed Sensor
47
-

48
-
?
49
-
?
50
-

51
-
?
52
VS-/IP- (Common Ground for VS, IP)
Heated Oxygen Sensor  [Bank 1/Sensor 1]
53
Rc/Rp (Pump Cell Voltage)
Heated Oxygen Sensor  [Bank 1/Sensor 1]
54
-
?
55
Sensor ground
Boost Pressure Sensor (BPS)
56
-
-
57
Boost Pressure Sensor (BPS) signal input
Boost Pressure Sensor (BPS)
58
Rail Pressure Sensor (RPS) signal input
Rail Pressure Sensor (RPS)
59
-

60
Start signal input
PDM module
61
LIN communication signal input

62
-
?
63
CAN [Low]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
64
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
65
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] signal input
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
66
-
?
67
Crankshaft Position Sensor (CKPS) [B] signal input
Crankshaft Position Sensor (CKPS)
68
-
?
69
-
?
70
RCV control Solenoid Valve control output
RCV control solenoid valve
71
-
?
72
Purge Control Solenoid Valve (PCSV) control output
Purge Control Solenoid Valve (PCSV)
73
-
?
74
VS+ (NERNST Cell Voltage)
Heated Oxygen Sensor  [Bank 1/Sensor 1]
75
Rc (Compensative Resistance)
Heated Oxygen Sensor  [Bank 1/Sensor 1]
76
Sensor ground
Rail Pressure Sensor (RPS)
77
Sensor ground
A/C Pressure Transducer (APT)
78
Sensor ground
Manifold Absolute Pressure Sensor (MAPS)
79
Intake Temperature Sensor (IATS) signal input
Intake Temperature Sensor (IATS)
80
Manifold Absolute Pressure Sensor (MAPS) signal input
Manifold Absolute Pressure Sensor (MAPS)
81
-
?
82
-
?
83
Immobilizer communication line
Smart Key Control Module [With Button Engine Start System]
Immobilizer Control Module [Without Button Engine Start System]
84
-
?
Components and Components Location
Components Location 1. Engine Control Module (ECM) 2. Manifold Absolute Pressure Sensor (MAPS) 3. Intake Air Temperature Sensor (IATS) 4. Boost Pressure Sensor (BPS) 5. Engine C ...

Engine Control Module (ECM) Repair procedures
Removal     When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below. [In the case of installing used ECM] 1. Perform "Neutral mod ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location 1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Tail lamps5. BCM (Body Control Module) ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Replacement 1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds. 2. Turn the steering wheel so that the front wheels can face straight ahead. 3. Remove the airbag module. 4. Remove the DAB module. (1) Disconnect the air bag connector (A). ...

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