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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.0L (Except HEV) >> Engine Control Module (ECM) >> Schematic Diagrams >> ECM Terminal And Input/Output Signal >> ECM Terminal Input/Output Signal >> Connector [B]
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Connector [B]

Pin No. Description Condition Type Level
1 ECM ground Idle DC -0.3 - 0.5V
2 ECM ground Idle DC -0.3 - 0.5V
3 Battery power (B+) IG OFF DC Max. 1.0V
IG ON Battery voltage (B+)
4 ECM ground Idle DC -0.3 - 0.5V
5 Battery power (B+) IG OFF DC Max. 1.0V
IG ON Battery voltage (B+)
6 Battery power (B+) IG OFF DC Max. 1.0V
IG ON Battery voltage (B+)
7 -      
8 Flex-Ray communication [High] signal input      
9 -      
10 Brake switch [Test] signal input Brake OFF DC Battery voltage (B+)
Brake ON Max. 0.5V
11 -      
12 -      
13 Electric load signal input Lamp OFF DC Battery voltage (B+)
Lamp ON -0.3 - 0.5V
14 Immobilizer communication line      
15 -      
16 Main relay control output Relay OFF DC Battery voltage (B+)
Relay ON -0.3-1.2V
17 -      
18 Purge Control Solenoid Valve (PCSV) control output Inactive Active Pulse High: Battery voltage (B+)
Low: Max. 1.0V
V-Peak: 42.0-60.0V
Frequency: 20Hz
19 E-CWT Relay control output      
20 -      
21 -      
22 Injector (Cylinder #2) [High] control output Engine running PWM
G12922241Courtesy of KIA MOTORS AMERICA, INC.
23 Injector (Cylinder #2) [Low] control output Engine running Pulse
G12922242Courtesy of KIA MOTORS AMERICA, INC.
24 -      
25 Flex-Ray communication [Low] signal input      
26 -      
27 Brake switch [Lamp] signal input Brake OFF DC Max. 0.5V
Brake ON Battery voltage (B+)
28 -      
29 -      
30 A/C Pressure Transducer (APT) signal input      
31 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog -0.3 - 5.2V
32 LIN communication signal input      
33 Fuel pump relay control output Relay OFF DC Battery voltage (B+)
Relay ON -0.3-1.2V
34 Start control output Relay OFF DC Battery voltage (B+)
Relay ON -0.3-1.2V
35 Cooling fan relay [High] control output Relay OFF DC Battery voltage (B+)
Relay ON Max. 1.0V
36 -      
37 -      
38 Canister Close Valve (CCV) control output Inactive Active Pulse High: Battery voltage (B+)
Low: Max. 1.0V
V-Peak: 42.0-60.0V
39 Injector (Cylinder #3) [High] control output Engine running PWM
G12922243Courtesy of KIA MOTORS AMERICA, INC.
40 Injector (Cylinder #3) [Low] control output Engine running Pulse
G12922244Courtesy of KIA MOTORS AMERICA, INC.
41 Battery power (B+) IG OFF DC Max. 1.0V
IG ON Battery voltage (B+)
42 -      
43 -      
44 Sensor ground Idle DC -0.3 - 0.5V
45 -      
46 Sensor ground Idle DC -0.3 - 0.5V
47 Sensor ground Idle DC -0.3 - 0.5V
48 Sensor ground Idle DC -0.3 - 0.5V
49 -      
50 Sensor ground Idle DC -0.3 - 0.5V
52 -      
51 -      
53 -      
54 Engine speed signal output Engine running Frequency High: Battery voltage (B+)
Low: -0.3 - 1.0V
Frequency: 21 Hz (Idle), 100Hz (3, 000 RPM)
55 -      
56 Injector (Cylinder #4) [High] control output Engine running PWM
G12922245Courtesy of KIA MOTORS AMERICA, INC.
57 Injector (Cylinder #4) [Low] control output Engine running Pulse
G12922246Courtesy of KIA MOTORS AMERICA, INC.
58 Heated Oxygen Sensor [Bank 1/Sensor 2] signal input Idle DC Rich: 0.6 - 1.0V
Lean: Max. 0.4V
59 -      
60 CAN [Low] Recessive Pulse 2.0 - 3.0V
Dominant 2.75 - 4.5V
61 starter signal input S/W OFF DC -0.3 - 0.5V
S/WON Battery voltage (B+)
62 -      
63 -      
64 Accelerator Position Sensor (APS) 2 signal input C.T Analog Max. 1.0V
W.O.T 1.5 - 3.0V
65 Accelerator Position Sensor (APS) 1 signal input C.T Analog Max. 1.0V
W.O.T Min. 4.0V
66 -      
67 -      
68 -      
69 -      
70 -      
71 Cooling fan relay [Low] control output Relay OFF DC Battery voltage (B+)
Relay ON -0.3-1.2V
72 -      
73 Injector (Cylinder #1) [High] control output Engine running PWM
G12922247Courtesy of KIA MOTORS AMERICA, INC.
74 Injector (Cylinder #1) [Low] control output Engine running Pulse
G12922248Courtesy of KIA MOTORS AMERICA, INC.
75 Battery power (B+) IG OFF DC Max. 1.0V
IG ON Battery voltage (B+)
76 -      
77 CAN [High] Recessive Pulse 2.0 - 3.0V
Dominant 2.75 - 4.5V
78 Vehicle signal input      
79 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON 4.75 - 5.25V
80 -      
81 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON 4.75 - 5.25V
82 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON 4.75 - 5.25V
83 -      
84 Fuel Level Sender      
85 -      
86 CWT Oil Control Valve (OCV) [Bank 1/lntake] control output Idle Pulse High: Battery voltage (B+)
Low: -0.3 - 1.0V
Frequency: 300Hz
87 -      
88 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater control output Engine running Pulse High: Battery voltage (B+)
Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
89 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater control output Engine running Pulse High: Battery voltage (B+)
Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
90 Fuel Pressure Regulator Valve [High] control output Engine running l PWM
G12922249Courtesy of KIA MOTORS AMERICA, INC.
91 Fuel Pressure Regulator Valve [Low] control output Engine running Pulse
G12922250Courtesy of KIA MOTORS AMERICA, INC.
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