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Home >> Hyundai >> 2018 >> Elantra Eco >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 1.4L >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Terminal And Input/Output Signal >> ECM Terminal Input/Output Signal >> Connector [C300-K]
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Connector [C300-K]

Pin No. Description Condition Type Level
1 ECM ground Idle DC voltage Max. 50mV
2 ECM ground Idle DC voltage Max. 50mV
3 ECM ground Idle DC voltage Max. 50mV
4 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
5 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
6 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
7 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
8 Sensor ground Idle DC voltage Max. 50mV
9 Sensor ground Idle DC voltage Max. 50mV
10 Sensor ground Idle DC voltage Max. 50mV
11 Ignition Coil Feedback      
12 Sensor ground Idle DC Max. 50mV
13 -      
14 -      
15 -      
16 Sensor ground Idle DC voltage Max. 50mV
17 -      
18 -      
19 -      
20 -      
21 -      
22 CVVT Oil Control Valve (OCV) [Bank 1/Intake] control output Idle Pulse High: Battery voltage
Low: Max. 1.65V
23 -      
24 Cooling fan PWM control output      
25 -      
26 -      
27 Canister Close Valve (CCV) control output (W/O Immobilizer/Smart key) Active DC voltage Battery voltage
Inactive Max. 1.76V
Fuel pump relay control output (With Immobilizer/Smart key) Relay OFF DC voltage Battery voltage
Relay ON Max. 1.44V
28 -      
29 Ignition switch signal input IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
30 Sensor ground Idle DC voltage Max. 50mV
31 Sensor ground Idle DC voltage Max. 50mV
32 -      
33 -      
34 -      
35 Sensor ground Idle DC voltage Max. 50mV
36 Sensor ground Idle DC voltage Max. 50mV
37 Sensor ground Idle DC voltage Max. 50mV
38 -      
39 Alternator COM signal output Idle Pulse High: Battery voltage
Low: Max. 0.6V
40 -      
41 Start relay (Low) control output Relay OFF DC voltage Battery voltage
Relay ON Max. 2.64V
42 -      
43 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
44 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
45 -      
46 Auto Stop Lamp output      
47 -      
48 -      
49 -      
50 CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control output Idle Pulse High: Battery voltage
Low: Max. 1.65V
51 Main relay control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.7V
52 Sensor ground Idle DC voltage Max. 50mV
53 Blower Switch MAX. signal input ON DC voltage Battery voltage
OFF Max. 1.0V
54 A/C Pressure Transducer (APT) signal input A/C ON Analog 0.348 - 4.63V
55 -      
56 Intake Temperature Sensor (IATS) signal input Idle Analog 0.209 - 4.756V
57 Manifold Absolute Pressure Sensor (MAPS) signal input Idle Analog 0.6683 - 4.346V
58 Sensor ground Knocking Variable  
Normal Frequency  
59 VS+ (NERNST Cell Voltage) Idle Analog 0 - 5.1V
60 Rc (Compensative Resistance) Idle Analog 0 - 5.1V
61 LIN communication signal input RECESSIVE Pulse Max. 5.6V (at 14V)
DOMINANT Min. 8.4V (at 14V)
62 CCP-CAN [Low]      
63 CAN [Low] RECESSIVE Pulse 2.0 - 3.0V
DOMINANT 0.5 - 2.25V
64 -      
65 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
66 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
67 Start relay (High) control output Relay OFF DC voltage Battery voltage
Relay ON Max. 2.64V
68 RCV control solenoid valve control output      
69 -      
70 -      
71 Canister Close Valve (CCV) control output (With Immobilizer/Smart key) Active DC voltage Battery voltage
Inactive Max. 1.76V
Fuel pump relay control output (W/O Immobilizer/Smart key) Relay OFF DC voltage Battery voltage
Relay ON Max. 1.44V
72 -      
73 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog 0.3343 - 0.4667V
74 Throttle Position Sensor (TPS) 2 signal input Idle Analog 0.55 - 4.37V
75 -      
76 Fuel Level Sensor (FLS) signal input Idle Analog 0.193 - 4.000V
77 Accelerator Position Sensor (APS) 2 signal input Idle Analog 0.261 - 2.204V
78 Rail Pressure Sensor (RPS) signal input Idle Analog 0.43 - 3.46V
79 Knock Sensor (KS) signal input Knocking Variable  
Normal Frequency  
80 VS-/IP- (Common Ground for VS, IP) Idle DC voltage Max. 50mV
81 Rc/Rp (Pump Cell Voltage) Idle Analog 0 - 5.1V
82 Engine speed signal output Idle Pulse High: Battery voltage
Low: Max. 0.6V
83 Immobilizer communication line When Pulse High: Min. 8.4V (at 14V)
transmitting Low: Max. 6.44V (at 14V)
84 CCP-CAN [High]      
85 CAN [High] RECESSIVE Pulse 2.0 - 3.0V
DOMINANT 2.75 - 4.5V
86 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
87 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
88 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 - 5.1V
89 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] heater control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.65V
90 -      
91 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] heater control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.65V
92 -      
93 -      
94 Purge Control Solenoid Valve (PCSV) control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.76V
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