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Home >> Kia >> 2021 >> Niro LX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (HEV) >> 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 DESCRIPTION

Pin No. Description Condition Type Level
1 Injector (Cylinder #3) [Low] control Relay OFF DC Voltage 71V
Relay ON Max. 1.0V
2 Injector (Cylinder #4) [High] control Relay OFF DC Voltage 71V
Relay ON Max. 1.0V
3 Injector (Cylinder #4) [Low] control Relay OFF DC Voltage 71V
Relay ON Max. 1.0V
4 Engine speed signal output Idle Pulse High: Battery Voltage
Low: Max. 0.6V
5 EGR Valve (Motor -)      
6 Sensor power (+5V) IG OFF DC Voltage Max. 0.5V
IG ON 4.9 - 5.1V
7 Sensor power (+5V) IG OFF DC Voltage Max. 50 mV
IG ON 4.9 - 5.1V
8 Knock Sensor (KS) signal input Knocking Variable Frequency -0.3 - 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 - 0.5V
Frequency: 7Hz (Idle), 25Hz (3, 000 rpm)
10 -      
11 Brake switch [Test] signal input Brake OFF DC Voltage Battery Voltage (B+)
Brake ON Max. 50 mV
12 Brake switch [Lamp] signal input Brake OFF DC Voltage Max. 50 mV
Brake ON Battery Voltage (B+)
13 -      
14 -      
15 -      
16 Injector (Cylinder #3) [High] control Relay ON/OFF DC Voltage 71V
17 Injector (Cylinder #1) [High] control Relay ON/OFF DC Voltage 71V
18 Injector (Cylinder #1) [Low] control Relay OFF DC Voltage 71V
Relay ON Max. 1.0V
19 -      
20 EGR Valve (Motor +)      
21 Sensor shield Idle DC Voltage Max. 50 mV
22 Sensor ground (-) Idle DC Voltage Max. 50 mV
23 -      
24 Sensor ground (-) Idle DC Voltage Max. 50 mV
25 -      
26 -      
27 -      
28 -      
29 -      
30 -      
31 Injector (Cylinder #2) [High] control Relay ON/OFF DC Voltage 71V
32 -      
33 ETC Motor [-] control      
34 Sensor ground (-) Idle DC Voltage 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 Voltage Max. 50 mV
37 Rail Pressure Sensor (RPS) signal input Idle Analog -0.3 - 5.2V
38 -      
39 Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input Engine Run Pulse High: 4.5-5.5V
Low: -0.3 - 0.5V
Frequency: 7Hz (Idle), 25Hz (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 Voltage Max. 50 mV
46 Injector (Cylinder #2) [Low] control Relay OFF DC Voltage 71V
Relay ON Max. 1.0V
47 -      
48 ETC Motor [+] control Engine Run Pulse High: Battery voltage (B+)
Low: Max. 1.0 V
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 Voltage Max. 50 mV
IG ON 4.9 - 5.1V
52 Electric load signal input Lamp OFF DC Voltage Battery Voltage (B+)
Lamp ON Max. 50 mV
53 Sensor ground Idle DC Voltage Max. 50 mV
54 Sensor ground Idle DC Voltage 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 (Pumping 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 Voltage Rich: 0.6-1.0V
Lean: Max. 0.4V
CONNECTOR K DESCRIPTION

Pin No. Description Condition Type Level
1 ECM Ground (-) Idle DC Voltage -0.3 - 0.5V
2 Battery power (B+) IG OFF DC Voltage Max. 1.0V
IG ON Battery Voltage (B+)
3 ECM Ground (-) Idle DC Voltage -0.3 - 0.5V
4 Battery power (B+) IG OFF DC Voltage Max. 1.0V
IG ON Battery Voltage (B+)
5 ECM Ground (-) Idle DC Voltage -0.3 - 0.5V
6 Battery power (B+) IG OFF DC Voltage Max. 1.0V
IG ON Battery Voltage (B+)
7 Fuel Pressure Control Valve (FPCV)[High] control Engine Run PWM
G13436532Courtesy of KIA MOTORS AMERICA, INC.
8 -      
9 -      
10 Engine Coolant Sensor (ECTS) signal input [EGR cooler tube] Idle Analog 0.5 - 4.5V
(Idle: 1.02V)
11 Sensor ground Idle DC Voltage Max. 50 mV
12 Vehicle 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 Voltage Max. 50 mV
IG ON 4.9 - 5.1V
17 Sensor power (+5V) IG OFF DC Voltage Max. 50 mV
IG ON 4.9 - 5.1V
18 Sensor power (+5V) IG OFF DC Voltage Max. 50 mV
IG ON 4.9 - 5.1V
19 Accelerator Position Sensor (APS) 1 signal input C.T Analog Max. 1.0V
W.O.T Min. 4.0V
20 Sensor power (+5V) IG OFF DC Voltage Max. 50 mV
IG ON 4.9 - 5.1V
21 -      
22 -      
23 -      
24 Fuel pump relay control Relay OFF DC Voltage Battery Voltage (B+)
Relay ON -0.3 - 1.2V
25 -      
26 -      
27 -      
28 -      
29 Fuel Pressure Control Valve [Low] control Engine Run PWM
G13436533Courtesy of KIA MOTORS AMERICA, INC.
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 - 0.5V
Frequency: 850Hz (Idle), 3, 000Hz (3, 000 rpm)
33 -      
34 -      
35 -      
36 -      
37 Sensor ground (-) Idle DC Voltage Max. 50 mV
38 Manifold Absolute Pressure Sensor (MAPS) signal input Idle Analog 0.8 - 1.6V (Idle: 1.37V)
39 Intake Temperature Sensor (IATS) signal input Idle Analog 0 - 5.0V (Idle: 2.55V)
40 Sensor ground (-) Idle DC Voltage Max. 50 mV
41 Sensor ground (-) Idle DC Voltage Max. 50 mV
42 -      
43 -      
44 Mass Air Flow Sensor (MAFS) signal input      
45 Sensor ground Idle DC Voltage Max. 50 mV
46 Main Relay control Relay OFF DC Voltage Battery Voltage (B+)
Relay ON -0.3 - 1.2V
47 Variable Force Solenoid (VFS) [Bank 1/Intake] control      
48 Canister Close Valve (CCV) control output Active Inactive Pulse High: Battery voltage
Low: Max. 1.0V
Vpeak: 42.0 ~ 60.0V
49 -      
50 -      
51 Battery power (B+) IG OFF DC Voltage Max. 1.0V
IG ON Battery Voltage (B+)
52 -      
53 -      
54 Sensor ground (-) Idle DC Voltage 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 Sensor (ECTS) signal input [Water Temperature Control Assembly]      
61 Sensor ground Idle DC Voltage Max. 50 mV
62        
63 -      
64 Ignition Coil (Cylinder #2) control Engine Run Pulse Vpeak = 360 - 440V
125
65 Ignition Coil (Cylinder #3) control Engine Run Pulse Vpeak = 360 - 440V
125
66 -      
67 -      
68 Cooling fan relay control      
69 -      
70 CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control Idle Pulse High: Battery Voltage (B+)
Low: -0.3 - 1.0V
Frequency: 300Hz
71 -      
72 -      
73 Battery power (B+) IG OFF DC Voltage Max. 1.0V
IG ON Battery Voltage (B+)
74 -      
75 Sensor ground (-) Idle DC Voltage Max. 50 mV
76 Local Interconnect Network (LIN) Serial Bus Line      
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 -      
83 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog -0.3 - 5.2V
84 Sensor ground (-) Idle DC Voltage Max. 50 mV
85 -      
86 Ignition Coil (Cylinder #4) control Engine Run Pulse Vpeak = 360 - 440V
125
87 Ignition Coil (Cylinder #1) control Engine Run Pulse Vpeak = 360 - 440V
125
88 -      
89 -      
90 -     High: Battery Voltage (B+)
91 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor1] Heater control Engine Run Pulse Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
High: Battery Voltage (B+)
92 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor2] Heater control Engine Run Pulse Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
High: Battery Voltage (B+)
93 Purge Control Solenoid Valve (PCSV) control Inactive Active Pulse Low: Max. 1.0V
Vpeak: 42.0 - 60.0V
Frequency: 20Hz
94 -      
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