Hyundai Ioniq (AE): Engine Control System / Engine Control Module (ECM). Schematic diagrams

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Engine Control/Fuel System / Engine Control System / Engine Control Module (ECM). Schematic diagrams

ECM Terminal and Input / Output Signal

ECM Terminal Function
Connector [C100-A]
Pin No
Description
Connected to
1
Injector (Cylinder #3) [Low] control output
Injector (Cylinder #3)
2
Injector (Cylinder #4) [High] control output
Injector (Cylinder #4)
3
Injector (Cylinder #3) [Low] control output
Injector (Cylinder #3)
4
Vehicle speed signal output
Cluster
5
EGR Valve (Motor -)
EGR Valve
6
Sensor power (+5V)
Throttle Position Sensor (TPS) 1, 2
7
Sensor power (+5V)
EGR Valve
8
Knock Sensor (KS) signal input
Knock Sensor (KS)
9
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] signal input
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
10
-

11
Brake Switch [test] signal input
Brake Switch
12
Brake Switch [lamp] signal input
Brake Switch
13
-

14
-

15
-

16
Injector (Cylinder #3) [High] control output
Injector (Cylinder #3)
17
Injector (Cylinder #1) [High] control output
Injector (Cylinder #1)
18
Injector (Cylinder #1) [Low] control output
Injector (Cylinder #1)
19
-

20
EGR Valve (Motor +)
EGR Valve
21
Sensor shield
Knock Sensor (KS)
22
Sensor ground
Knock Sensor (KS)
23
-

24
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
25
-

26
-

27
-

28
-

29
-

30
-

31
Injector (Cylinder #2) [High] control output
Injector (Cylinder #2)　
32
-

33
ETC Motor [-] control output
ETC Motor
34
Sensor ground
Throttle Position Sensor (TPS) 1, 2
35
Throttle Position Sensor (TPS) 1 signal input
Throttle Position Sensor (TPS) 1
36
Sensor ground
Rail Pressure Sensor (RPS)
37
Rail Pressure Sensor (RPS) signal input
Rail Pressure Sensor (RPS)
38
-

39
Camshaft Position Sensor (CMPS) [Bank 1 / Intake] signal input
Camshaft Position Sensor (CMPS) [Bank 1 / Intake]
40
-

41
-

42
-

43
VS-/IP- (Common Ground for VS, IP)
Heated Oxygen Sensor [Bank 1 / Sensor 1]　
44
Rc (Compensative Resistance)
Heated Oxygen Sensor [Bank 1 / Sensor 1]　
45
Sensor ground
Heated Oxygen Sensor [Bank 1 / Sensor 2]　
46
Injector (Cylinder #2) [Low] control output
Injector (Cylinder #2)
47
-

48
ETC Motor [+] control output
ETC Motor
49
-

50
Throttle Position Sensor (TPS) 2 signal input
Throttle Position Sensor (TPS) 2
51
Sensor power (+5V)
Rail Pressure Sensor (RPS)
52
Electrical load signal input
Wiper Motor
53
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1 / Intake]
54
Sensor ground
EGR valve
55
EGR valve (Feedback signal)
EGR valve
56
-

57
-

58
VS+ (NERNST Cell Voltage)
Heated Oxygen Sensor [Bank 1 / Sensor 1]　
59
Rc/Rp (Pump Cell Voltage)
Heated Oxygen Sensor [Bank 1 / Sensor 1]　
60
Heated Oxygen Sensor [Bank 1 / Sensor 2] signal input
Heated Oxygen Sensor [Bank 1 / Sensor 2]　

Connector [C100-K]
Pin No
Description
Connected to
1
ECM Ground
Chassis Ground
2
Battery power (B+)
Main Relay
3
ECM Ground
Chassis Ground
4
Battery power (B+)
Main Relay
5
ECM Ground
Chassis Ground
6
Battery power (B+)
Main Relay
7
Fuel Pressure Control Valve [High] control output
Fuel Pressure Control Valve
8
-

9
-

10
Engine Coolant Temperature Sensor (ECTS) signal [EGR Cooler Tube]
Engine Coolant Temperature Sensor (ECTS) [EGR Cooler Tube]
11
Sensor ground
Engine Coolant Temperature Sensor (ECTS) [EGR Cooler Tube]
12
Vehicle speed signal input
Integrated brake actuation unit
Smart key Control Module
13
-

14
-

15
Accelerator Position Sensor (APS) 2 signal input
Accelerator Position Sensor (APS) 2
16
Sensor power (+5V) 
Accelerator Position Sensor (APS) 2
17
Sensor power (+5V) 
Manifold Absolute Pressure Sensor (MAPS)
18
Sensor power (+5V) 
Accelerator Position Sensor (APS) 1
19
Accelerator Position Sensor (APS) signal input
Accelerator Position Sensor (APS) 1
20
Sensor power (+5V) 
Crankshaft Position Sensor (CKPS)
A/C Pressure Transducer (APT)
21
-

22
-

23
-

24
Fuel Pump Relay control output
Fuel Pump Relay
25
-

26
-

27
-

28
-

29
Fuel Pressure Control Valve [Low] control output
Fuel Pressure Control Valve
30
A/C Pressure Transducer (APT) signal input
A/C Pressure Transducer (APT)
31
-

32
Crankshaft Position Sensor (CKPS) signal input
Crankshaft Position Sensor (CKPS)
33
-

34
-

35
-

36
-

37
Sensor ground
Accelerator Position Sensor (APS) 2
38
Manifold Absolute Pressure Sensor (MAPS) signal input
Manifold Absolute Pressure Sensor (MAPS)
39
Intake Air Temperature Sensor (IATS) signal input
Intake Air Temperature Sensor (IATS)
40
Sensor ground
Manifold Absolute Pressure Sensor (MAPS)
41
Sensor ground
Accelerator Position Sensor (APS) 1
42
-

43
-

44
Mass Air Flow Sensor (MAFS) signal input
Mass Air Flow Sensor (MAFS) 
45
Sensor ground
Mass Air Flow Sensor (MAFS) 
46
Engine Control Relay control output
Main Relay
47
CVVT Oil control solenoid (OCS) [Bank 1 / Intake] control output
CVVT Oil control solenoid (OCS) [Bank 1 / Intake]
48
-

49
-

50
-

51
Battery power (B+)
Ignition Switch
52
-

53
-

54
Sensor ground
Crankshaft Position Sensor (CKPS)
55
P-CAN [High]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connetor
56
H-CAN [High]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connetor
57
-

58
Immobilizer communication line
Smart key Control Module
59
-

60
Engine Coolant Temperature Sensor (ECTS) signal input [Water Temperature Control Assembly]
Engine Coolant Temperature Sensor (ECTS) [Water Temperature Control Assembly]
61
Sensor ground
Engine Coolant Temperature Sensor (ECTS) [Water Temperature Control Assembly]
62
Fuel Level Sender (FLS) signal input
Fuel Level Sender (FLS)
63
-

64
Ignition Coil (Cylinder #2) control output
Ignition Coil (Cylinder #2)
65
Ignition Coil (Cylinder #3) control output
Ignition Coil (Cylinder #3)
66
-

67
-

68
Cooling Fan Relay control output
Cooling Fan Relay
69
-

70
CVVT Oil Control (OCV) Valve [Bank 1 / Exhaust] control output
CVVT Oil Control Valve (OCV) [Bank 1 / Exhaust]
71
- 

72
- 

73
Battery power (B+)
Battery
74
- 

75
Sensor ground
A/C Pressure Transducer (APT)
76
LIN communication signal input
Battery Sensor
77
P-CAN [Low]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connetor
78
H-CAN [Low]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connetor
79
- 

80
- 

81
- 

82
- 

83


84


85
- 

86
Ignition Coil (Cylinder #4) control output
Ignition Coil (Cylinder #4)
87
Ignition Coil (Cylinder #1) control output
Ignition Coil (Cylinder #1)
88
- 

89
- 

90
-

91
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor1] Heater control output
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1]
92
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor2] Heater control output
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1]
93
Purge Control Solenoid Valve (PCSV) control output
Purge Control Solenoid Valve (PCSV)
94
-


ECM Terminal Input/Output Signal
Connector [C100-A]
Pin No
Description
Condition
Type
Level
1
IInjector (Cylinder #3) [Low] control output
Relay OFF
DC
71V
Relay ON
Max 1.0V
2
IInjector (Cylinder #4) [High] control output
Relay ON/OFF
DC
71V
3
IInjector (Cylinder #3) [Low] control output
Relay OFF
DC
71V
Relay ON
Max 1.0V
4
Vehicle speed signal output
Idle
Pulse
High : Battery Voltage
Low : Max 0.6V
5
EGR Valve (Motor -)



6
Sensor power (+5V)
IG OFF
DC
Max 0.5V
IG ON
4.9 - 5.1V
7
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
8
Knock Sensor (KS) signal input
Knocking
Variable
Frequency
-0.3 to 0.3V
Normal
0V
9
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] signal input
Engine Run
Pulse
High : 4.5 - 5.5V
Low : -0.3 to 0.5V
Frequency : 7 Hz (Idle), 25 Hz (3,000 rpm)
10
-



11
Brake Switch [test] signal input
Brake OFF
DC
Battery Voltage (B+)
Brake ON
Max 50 mV
12
Brake Switch [lamp] signal input
Brake OFF
DC
Max 50 mV
Brake ON
Battery Voltage (B+)
13
-



14
-



15
-



16
IInjector (Cylinder #3) [High] control output
Relay ON/OFF
DC
71V
17
IInjector (Cylinder #1) [High] control output
Relay ON/OFF
DC
71V
18
IInjector (Cylinder #1) [Low] control output
Relay OFF
DC
71V
Relay ON
Max 1.0V
19
-



20
EGR Valve (Motor +)



21
Sensor shield
Idle
DC
Max 50 mV
22
Sensor ground
Idle
DC
Max 50 mV
23
-



24
Sensor ground
Idle
DC
Max 50 mV
25
-



26
-



27
-



28
-



29
-



30
-



31
IInjector (Cylinder #2) [High] control output
Relay ON/OFF
DC
71V
32
-



33
ETC Motor [-] control output



34
Sensor ground
Idle
DC
Max 50 mV
35
Throttle Position Sensor (TPS) 1 signal input
C.T
Analog
0.3 - 0.9V
W.O.T
1.5 - 3.0V
36
Sensor ground
Idle
DC
Max 50 mV
37
Rail Pressure Sensor (RPS) signal input
Idle
Analog
-0.3 to 5.2V
38
-



39
Camshaft Position Sensor (CMPS) [Bank 1 / Intake] signal input
Engine Run
Pulse
High : 4.5 - 5.5V
Low : -0.3 to 0.5V
Frequency : 7 Hz (Idle), 25 Hz (3,000 rpm)
40
-



41
-



42
-



43
VS-/IP- (Common Ground for VS, IP)
Idle
Analog
Reference for V_IP, V_N
44
Rc (Compensative Resistance)
Idle
Analog
│Rc-Rc/Rp│< ±0.1V
45
Sensor ground
Idle
DC
Max 50 mV
46
IInjector (Cylinder #2) [Low] control output
Relay OFF
DC
71V
Relay ON
Max 1.0V
47
-



48
ETC Motor [+] control output
Engine Run
Pulse
High : Battery Voltage (B+)
Low : Max1.0V
49
-



50
Throttle Position Sensor (TPS) 2 signal input
C.T
Analog
4.2 - 5.0V
W.O.T
3.3 - 3.8V
51
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
52
Electrical load signal input
Lamp OFF
DC
Battery Voltage (B+)
Lamp ON
Max 50 mV
53
Sensor ground
Idle
DC
Max 50 mV
54
Sensor ground
Idle
DC
Max 50 mV
55
EGR valve (Feedback signal)



56
-



57
-



58
VS+ (NERNST Cell Voltage)
Idle
Analog
Normal : 450 ± 50 mV
Rich : Max Normal+150 mV
Lean : Min Normal-150 mV
59
Rc/Rp (Pump Cell Voltage)
Idle
Analog
Normal : 450 ± 50 mV
Rich : Max Normal+150 mV
Lean : Min Normal-150 mV
60
Heated Oxygen Sensor [Bank 1 / Sensor 2] signal input
Idle
DC
Rich : 0.6 - 1.0V
Lean : Max 0.4V

Connector [C100-K]
Pin No
Description
Condition
Type
Level
1
ECM Ground
Idle
DC
-0.3 to 0.5V
2
Battery power (B+)
IG OFF
DC
Max 1.0V
IG ON
Battery Voltage (B+)
3
ECM Ground
Idle
DC
-0.3 to 0.5V
4
Battery power (B+)
IG OFF
DC
Max 1.0V
IG ON
Battery Voltage (B+)
5
ECM Ground
Idle
DC
-0.3 to 0.5V
6
Battery power (B+)
IG OFF
DC
Max 1.0V
IG ON
Battery Voltage (B+)
7
Fuel Pressure Control Valve [High] control output
Engine Run
PWM

8
-



9
-



10
Engine Coolant Temperature Sensor (ECTS) signal [EGR Cooler Tube]
Idle
Analog
0.5 - 4.5V
(Idle : 1.02V)
11
Sensor ground
Idle
DC
Max 50 mV
12
Vehicle speed signal input



13
-



14
-



15
Accelerator Position Sensor (APS) 2 signal input
C.T
Analog
Max 1.0V
W.O.T
1.5 - 3.0V
16
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
17
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
18
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
19
Accelerator Position Sensor (APS) signal input
C.T
Analog
Max 1.0V
W.O.T
Min 4.0V
20
Sensor power (+5V)
IG OFF
DC
Max 50 mV
IG ON
4.9 - 5.1V
21
-



22
-



23
-



24
Fuel Pump Relay control output
Relay OFF
DC
Battery Voltage (B+)
Relay ON
-0.3 to 1.2V
25
-



26
-



27
-



28
-



29
Fuel Pressure Control Valve [Low] control output
Engine Run
PWM

30
A/C Pressure Transducer (APT) signal input
A/C ON
Analog
0.348 - 4.63 V
31
-



32
Crankshaft Position Sensor (CKPS) signal input
Engine Run
Pulse
High : 4.5 - 5.5V
Low : -0.3 to 0.5V
Frequency : 850 Hz (Idle), 3,000 Hz (3,000 rpm)
33
-



34
-



35
-



36
-



37
Sensor ground
Idle
DC
Max 50 mV
38
Manifold Absolute Pressure Sensor (MAPS) signal input
Idle
Analog
0.8 - 1.6V (Idle : 1.37V)
39
Intake Air Temperature Sensor (IATS) signal input
Idle
Analog
0 - 5.0V (Idle : 2.55V)
40
Sensor ground
Idle
DC
Max 50 mV
41
Sensor ground
Idle
DC
Max 50 mV
42
-



43
-



44
Mass Air Flow Sensor (MAFS) signal input



45
Sensor ground
Idle
DC
Max 50 mV
46
Engine Control Relay control output
Relay OFF
DC
Battery Voltage (B+)
Relay ON
-0.3 to 1.2V
47
CVVT Oil control solenoid (OCS) [Bank 1 / Intake] control output



48
-



49
-



50
-



51
Battery power (B+)
IG OFF
DC
Max 1.0V
IG ON
Battery Voltage (B+)
52
-



53
-



54
Sensor ground
Idle
DC
Max 50 mV
55
P-CAN [High]
Recessive
Pulse
2.0 - 3.0V
Dominant
2.75 - 4.5V
56
H-CAN [High]
Recessive
Pulse
2.0 - 3.0V
Dominant
2.75 - 4.5V
57
-



58
Immobilizer communication line



59
-



60
Engine Coolant Temperature Sensor (ECTS) signal input [Water Temperature Control Assembly]



61
Sensor ground
Idle
DC
Max 50 mV
62
Fuel Level Sender (FLS) signal input
Idle
Analog
0.55 - 4.37V
63
-



64
Ignition Coil (Cylinder #2) control output
Engine Run
Pulse
Vpeak = 360 - 440V
125

    DescriptionIf the Gasoline Engine Control system components (sensors, ECM, injector, etc.) fail, interruption to the fuel supply or failure to supply the proper amount of fuel for various engine operating conditions will result.

    Removal    • When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Repair procedures

    Self Diagnosis1.Self-diagnosis process.    • When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings (driver's side only) and the remaining symbols are OFF .

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Front Radar Unit. Specifications

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