LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2019 >> Elantra Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.0L >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Terminal And Input/Output Signal >> ECM Terminal Input/Output signal >> Connector [C300-A]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Connector [C300-A]

Pin No. Description Condition Type Level
1 -      
2 ETC Motor [+] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: Battery voltage
Free wheeling: Max. 0.1V
Reverse direction
Turn on: Max. 0.1V
Frewheeling: Max. 0.1V
3 -      
4 Motor [-] control output      
5 -      
6 -      
7 -      
8 -      
9 -      
10 Clutch switch signal input [M/T] Switch ON Digital Min. -0.3V ~Max. 0.5V
Switch OFF Battery voltage
11 -      
12 -      
13 -      
14 -      
15 Sensor ground Idle DC Max. 0.5V
16 Engine Coolant Temperature Sensor (ECTS) signal input Idle Analog Min. 0.1V ~ Max
17 Throttle Position Sensor (TPS) 2 signal input Idle Analog Min. 0.4V ~ Max. 4.5V
18 -      
19 -      
20 -      
21 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
22 -      
23 ETC Motor [-] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: max 0.1V
Frewheeling: max 0.1V
Reverse direction
Turn on: Battery voltage
Frewheeling: max 0.1V
24 -      
25 Motor [+] control output      
26 -      
27 -      
28 -      
29 -      
30 -      
31 Electrical load signal input Idle PWM Freq.: 125Hz or 200Hz or 60Hz
Duty rate 0% ~ 100%
32 -      
33 -      
34 -      
35 -      
36 -      
37 Sensor ground Idle DC Max. 0.5V
38 Throttle Position Sensor (TPS) 1 signal input Idle Analog Min. 0.4V ~ Max. 4.5V
39 -      
40 Alternator PWM control output IG OFF PWM Battery voltage
IG ON Max. 0.5V
41 -      
42 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
43 -      
44 -      
45 -      
46 -      
47 -      
48 -      
49 -      
50 -      
51 -      
52 -      
53 -      
54 VCMA Feedback ground      
55 -      
56 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input Idle Pulse Around 7Hz at 850 RPM
Around 25Hz at 3000 RPM
57 -      
58 -      
59 -      
60 -      
61 Sensor ground Idle DC Max. 0.5V
62 Manifold Absolute Pressure Sensor (MAPS) signal input Idle Analog Min. 0.8V ~ Max. 4.2V
63 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
64 -      
65 -      
66 -      
67 -      
68 -      
69 -      
70 -      
71 -      
72 -      
73 -      
74 Sensor ground Idle DC Max. 0.5V
75 -      
76 VCMA Feedback signal input      
77 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input Idle Pulse Around 7Hz at 850 RPM
Around 25Hz at 3000 RPM
78 Sensor ground Idle DC Max. 0.5V
79 -      
80 -      
81 -      
82 -      
83 VG (Virtual Ground) Idle Analog Min. 0.2V ~ Max. 5.2V
84 VN (NERNST Cell Voltage) Idle Analog Min. 0.2V ~ Max. 5.2V
85 -      
86 -      
87 -      
88 -      
89 -      
90 -      
91 -      
92 -      
93 -      
94 -      
95 Crankshaft Position Sensor (+) signal input Idle Frequency Vpp Min.: 18V at Idle (for 1 rail)
Vpp Max.: 90V at 5000 RPM (for 1 rail)
96 -      
97 -      
98 Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input Idle Pulse Around 7Hz at 850 RPM
Around 25Hz at 3000 RPM
99 Sensor ground Idle DC Max. 0.5V
100 Knock Sensor (KS) signal input Idle Analog/Frequency Freq.: Min. 8 KHz ~ Max. 12 KHz
Level: Min. 180 ~ Max. 300 mVpp
101 Intake Air Temperature Sensor (IATS) signal input Idle Analog Min. 0.1V ~ Max. 4.7V
102 -      
103 -      
104 VN (NERNST Cell Voltage) Idle Analog Min. 0.2V ~ Max. 5.2V
105 VIP (Current Pump) Idle Analog Min. 0.2V ~ Max. 5.2V