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Home >> Hyundai >> 2018 >> Ioniq Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (PHEV) >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Terminal And Input/Output Signal >> ECM Terminal Input/Output Signal
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ECM Terminal Input/Output Signal

Connector [A] 

Pin No Description Condition Type Level
1 Injector (Cylinder #3) [Low] control output Relay OFF DC 71V
Relay ON Max 1.0V
2 Injector (Cylinder #4) [High] control output Relay ON/OFF DC 71V
3 Injector (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: 7Hz (Idle), 25Hz (3, 000rpm)
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 Injector (Cylinder #3) [High] control output Relay ON/OFF DC 71V
17 Injector (Cylinder #1) [High] control output Relay ON/OFF DC 71V
18 Injector (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 Wake up signal input      
27 -      
28 -      
29 -      
30 -      
31 Injector (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: 7Hz (Idle), 25Hz (3, 000rpm)
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 Injector (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 [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
G12727102Courtesy of HYUNDAI MOTOR AMERICA
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 Fuel Tank Isolation Valve (FTIV) relay control      
23 Evaporation Leak Check Module (ELCM) negative pressure pump ground Idle Analog -0.3 - 0.5V
24 Fuel Pump Relay control output Relay OFF DC Battery Voltage (B+)
Relay ON -0.3 to 1.2V
25 -      
26 Evaporation Leak Check Module (ELCM) change over valve ground      
27 -      
28 -      
29 Fuel Pressure Control Valve [Low] control output Engine Run PWM
G12727103Courtesy of HYUNDAI MOTOR AMERICA
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: 850Hz (Idle), 3, 000Hz (3, 000rpm)
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 Sensor ground Idle DC Max 50 mV
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 Sensor ground      
58 Immobilizer communication line      
59 Sensor ground Idle Analog -0.3 ~ 0.5V
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 - 4.37 V
63 -      
64 Ignition Coil (Cylinder #2) control output Engine Run Pulse Vpeak = 360 - 440V
125
65 Ignition Coil (Cylinder #3) control output Engine Run Pulse Vpeak = 360 - 440V
125
66 -      
67 -      
68 Cooling Fan Relay control output      
69 -      
70 CVVT Oil Control (OCV) Valve [Bank 1/Exhaust] control output Idle Pulse High: Battery Voltage (B+)
Low: -0.3 to 1.0V
Frequency: 300 Hz
71 -      
72 -      
73 Battery power (B+) IG OFF DC Max 1.0V
IG ON Battery Voltage (B+)
74 -      
75 Sensor ground Idle DC Max 50 mV
76 LIN communication signal input      
77 P-CAN [Low] Recessive Pulse 2.0 - 3.0V
Dominant 2.75 - 4.5V
78 H-CAN [Low] Recessive Pulse 2.0 - 3.0V
Dominant 2.75 - 4.5V
79 -      
80 -      
81 -      
82 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog 0.5 - 4.5V
83 Evaporation Leak Check Module (ELCM) signal input (High Pressure) Idle Analog 1.4 - 4.2V
84 Sensor ground Idle DC -0.3 - 0.5V
85        
86 Ignition Coil (Cylinder #4) control output Engine Run Pulse Vpeak = 360 - 440V
125
87 Ignition Coil (Cylinder #1) control output Engine Run Pulse Vpeak = 360 - 440V
125
88 -      
89 -      
90 -      
91 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor1] Heater control output Engine Run Pulse High: Battery Voltage (B+)
Low: -0.3 to 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
92 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor2] Heater control output Engine Run Pulse High: Battery Voltage (B+)
Low: -0.3 to 1.0V
Frequency: 8 - 10 Hz
Duty: 0 - 100%
93 Purge Control Solenoid Valve (PCSV) control output Inactive Active Pulse High: Battery Voltage (B+)
Low: Max 1.0V
Vpeak: 42.0 - 60.0V
Frequency: 20 Hz
94 -      
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