Kia Optima: Engine Control Module (ECM) Schematic Diagrams - Engine Control System - Engine Control/Fuel SystemKia Optima: Engine Control Module (ECM) Schematic Diagrams

ECM Terminal And Input/Output signal

ECM Terminal Function


ECM Terminal Function
Connector [C100-K]
Pin
No.
Description
Connected to
1
Power ground
Chassis Ground
2
Battery power (B+)
Ignition Switch
3
Power ground
Chassis Ground
4
Battery power (B+)
Main Relay
5
Power ground
Chassis Ground
6
Battery power (B+)
Battery
7
-

8
-
?
9
Fuel Level Sender (FLS) signal input
Fuel Level Sender (FLS)
10
-
?
11
-
?
12
Knock Sensor (KS) signal input
Knock Sensor (KS)
13
Sensor ground
Accelerator Position Sensor (APS) 2
14
Sensor ground
Engine Coolant Temperature Sensor (ECTS)
15
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
16
-

17
Crankshaft Position Sensor (CKPS) signal input
Crankshaft Position Sensor (CKPS)
18
Rc / Rp (Pump Cell Voltage)
Heated Oxygen Sensor [Bank 1/Sensor 1]
19
VS + (NERNST Cell Voltage)
Heated Oxygen Sensor [Bank 1/Sensor 1]
20
VS - / IP - (Common Ground for VS, IP)
Heated Oxygen Sensor [Bank 1/Sensor 1]
21
-
?
22
-

23
-

24
-
?
25
Injector (Cylinder #1) control output
Injector (Cylinder #1)
26
Injector (Cylinder #3) control output
Injector (Cylinder #3)
27
Injector (Cylinder #4) control output
Injector (Cylinder #4)
28
Injector (Cylinder #2) control output
Injector (Cylinder #2)
29
-

30
Sensor power (+5V)
Manifold Absolute Pressure Sensor (MAPS)
31
Manifold Absolute Pressure Sensor (MAPS)
signal input
Manifold Absolute Pressure Sensor (MAPS)
32
Throttle Position Sensor (TPS) 2 signal input
Throttle Position Sensor (TPS) 2
33
Engine Coolant Temperature Sensor (ECTS) signal input
Engine Coolant Temperature Sensor (ECTS)
34
Sensor ground
Knock Sensor (KS)
35
Accelerator Position Sensor (APS) 2 signal input
Accelerator Position Sensor (APS) 2
36
Sensor power (+5V)
Accelerator Position Sensor (APS) 2
37
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Exhaust]
38
-

39
Sensor ground
Crankshaft Position Sensor (CKPS)
40
Vehicle speed signal input
ESP Control Unit
41
-

42
Rc (Compensative Resistance)
Heated Oxygen Sensor [Bank 1/Sensor 1]
43
Sensor power (+5V)
A/C Pressure Transducer (APT),
Fuel Tank Pressure Sensor (FTPS)
44
-

45
-
?
46
NVLD communication line
NVLD (Natural Vacuum Leakage Detection)
47
-
?
48
-
?
49
-
?
50
HEV READY signal output
Power Distribution Module (PDM)
51
Battery power (B+)
Main Relay
52
Fuel Tank Pressure Sensor (FTPS) signal input
Fuel Tank Pressure Sensor (FTPS)
53
Intake Air Temperature Sensor (IATS) signal input
Intake Air Temperature Sensor (IATS)
54
A/C Pressure Transducer (APT) signal input
A/C Pressure Transducer (APT)
55
-
?
56
-

57
Sensor ground
A/C Pressure Transducer (APT)
58
-
?
59
Sensor ground
Throttle Position Sensor (TPS) 1,2
60
Sensor power (+5V)
Accelerator Position Sensor (APS) 1
61
Sensor ground
Accelerator Position Sensor (APS) 1
62
Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
63
Sensor power (+5V)
Throttle Position Sensor (TPS) 1,2
64
Main Relay control output
Main Relay
65
Cooling Fan Relay [Low] control output
Cooling Fan Relay [Low]
66
CVVT Oil Control (OCV) Valve [Bank 1/Intake] control output
CVVT Oil Control Valve (OCV) [Bank 1/Intake]
67
Purge Control Solenoid Valve (PCSV) control output
Purge Control Solenoid Valve (PCSV)
68
CVVT Oil Control (OCV) Valve [Bank 1/Exhaust] control output
CVVT Oil Control Valve (OCV) [Bank 1/Exhaust]
69
-

70
Fuel Pump Relay control output
Fuel Pump Relay
71
ETC Motor [+] control output
ETC Motor
72
ETC Motor [-] control output
ETC Motor
73
Sensor ground
Fuel Tank Pressure Sensor (FTPS)
74
Sensor ground
Manifold Absolute Pressure Sensor (MAPS)
75
Immobilizer communication line
Immobilizer Control
76
-

77
CAN [High]
Other control module, Data Link Connector (DLC), 
78
CAN [Low]
Other control module, Data Link Connector (DLC), 
79
-
?
80
Throttle Position Sensor (TPS) 1 signal input
Throttle Position Sensor (TPS) 1
81
-

82
Accelerator Position Sensor (APS) 1 signal input
Accelerator Position Sensor (APS) 1
83
Sensor ground
Camshaft Position Sensor (CMPS) [Bank 1/Intake]
84
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
85
Sensor ground
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]
86
-

87
-

88
Cooling Fan Relay [High] control output
Cooling Fan Relay [High]
89
-

90
-

91
Canister Close Valve (CCV) control output
Canister Close Valve (CCV)
92
Malfunction Indicator Lamp (MIL) control output
Malfunction Indicator Lamp (MIL)
93
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater control output
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
94
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater control output
Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]

Connector [C100-A]
Pin
No.
Description
Connected to
1
Ignition Coil (Cylinder #1) control output (Without immobilizer)
Ignition Coil (Cylinder #1)
Ignition Coil (Cylinder #4) control output (With immobilizer)
Ignition Coil (Cylinder #4)
2
Shield
Ignition Coil (Cylinder #1,2,3,4)
3
-
?
4
-
?
5
-
?
6
-
?
7
-
?
8
-
?
9
-
?
10
-
?
11
-
?
12
-
?
13
Electrical load [Wiper] signal input
Wiper [Low] Relay
14
-

15
-

16
Ignition Coil (Cylinder #3) control output (Without immobilizer)
Ignition Coil (Cylinder #3)
Ignition Coil (Cylinder #2) control output (With immobilizer)
Ignition Coil (Cylinder #2)
17
-
?
18
Components and Components Location
Components Location 1. ECM (Engine Control Module)2. Manifold Absolute Pressure Sensor (MAPS)3. Intake Air Temperature Sensor (IATS)4. Engine Coolant Temperature Sensor (ECTS)5. Throttle Positio ...

Engine Control Module (ECM) Repair procedures
Removal 1. Shut off the High Voltage circuit. (Refer to “High Voltage Shut-off Procedures”) 2. Turn the ignition switch OFF and disconnect the auxiliary 12V negative (-) battery terminal ...

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Removal
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