Kia Niro: Engine Control System / Engine Control Module (ECM) Schematic diagrams

Kia Niro 2017 (DE HEV) Service Manual / Engine Control/Fuel System / Engine Control System / Engine Control Module (ECM) Schematic diagrams

ECM Terminal And Input/Output signal

ECM Terminal Function

Connector [A]

Pin No.
Description
Connected to
1
 Injector (Cylinder #3) [Low] control
 Injector (Cylinder #3)
2
 Injector (Cylinder #4) [High] control
 Injector (Cylinder #4)
3
 Injector (Cylinder #4) [Low] control
 Injector (Cylinder #4)
4
 Engine speed signal output
 Smart Key Control Module [Smart key type] / Immobilizer Module [Immobilizer type]
5
 EGR Valve (Motor -)
 Electric Exhaust Gas Recirculation (EGR) Valve
6
 Sensor power (+5V)
 Throttle Position Sensor (TPS) 1, 2
7
 Sensor power (+5V)
 Electric Exhaust Gas Recirculation (EGR) Valve
8
 Knock Sensor (KS) signal input
 Knock Sensor (KS)
9
 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input
 Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
10
 -
 　
11
 Brake switch [Test] signal input
 Brake switch
12
 Brake switch [Lamp] signal input
 Brake switch
13
 -
 　
14
 -
 　
15
 -
 　
16
 Injector (Cylinder #3) [High] control
 Injector (Cylinder #3)
17
 Injector (Cylinder #1) [High] control
 Injector (Cylinder #1)
18
 Injector (Cylinder #1) [Low] control
 Injector (Cylinder #1)
19
 -
 　
20
 EGR Valve (Motor +)
 Electric Exhaust Gas Recirculation (EGR) Valve
21
 Sensor shield
 Knock Sensor (KS)
22
 Sensor ground (-)
 Knock Sensor (KS)
23
 -
 　
24
 Sensor ground
 Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust]
25
 -
 　
26
 -
 　
27
 -
 　
28
 -
 　
29
 -
 　
30
 -
 　
31
 Injector (Cylinder #2) [High] control
 Injector (Cylinder #2)　
32
 -
 　
33
 ETC Motor [-] control
 ETC Motor
34
 Sensor ground
 Throttle Position Sensor (TPS) 1, 2
35
 Throttle Position Sensor (TPS) 1 signal input
 Throttle Position Sensor (TPS) 1
36
 Sensor ground
 Rail Pressure Sensor (RPS)
37
 Rail Pressure Sensor (RPS) signal input
 Rail Pressure Sensor (RPS)
38
 -
 　
39
 Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input
 Camshaft Position Sensor (CMPS) [Bank 1/Intake]
40
 -
 　
41
 -
 　
42
 -
 　
43
 VS-/IP- (Virtual Ground)
 Heated Oxygen Sensor [Bank 1/Sensor 1]　
44
 Rc (Compensative Resistance)
 Heated Oxygen Sensor [Bank 1/Sensor 1]　
45
 Sensor ground
 Heated Oxygen Sensor [Bank 1/Sensor 2]　
46
 Injector (Cylinder #2) [Low] control
 Injector (Cylinder #2)
47
 -
 　
48
 ETC Motor [+] control
 ETC Motor
49
 -
 　
50
 Throttle Position Sensor (TPS) 2 signal input
 Throttle Position Sensor (TPS) 2
51
 Sensor power (+5V)
 Rail Pressure Sensor (RPS)
52
 Electric load  signal input
 Wiper Motor
53
 Sensor ground
 Camshaft Position Sensor (CMPS) [Bank 1/Intake]
54
 Sensor ground
 Electric Exhaust Gas Recirculation (EGR) Valve
55
 EGR Valve (Feedback signal)
 Electric Exhaust Gas Recirculation (EGR) Valve
56
 -
 　
57
 -
 　
58
 VS+ (NERNST cell voltage)
 Heated Oxygen Sensor [Bank 1/Sensor 1]　
59
 Rc/Rp (Pumping cell voltage)
 Heated Oxygen Sensor [Bank 1/Sensor 1]　
60
 Heated Oxygen Sensor [Bank 1/Sensor 2] signal input
 Heated Oxygen Sensor [Bank 1/Sensor 2]　

Connector [K]

Pin No.
Description
Connected to
1
 ECM Ground
 Chassis ground
2
 Battery power (B+)
 Main Relay
3
 ECM Ground
 Chassis ground
4
 Battery power (B+)
 Main Relay
5
 ECM Ground
 Chassis ground
6
 Battery power (B+)
 Main Relay
7
 Fuel Pressure Control Valve [High] control
 Fuel Pressure Control Valve (FPCV)
8
 -
 　
9
 -
 　
10
 Engine Coolant Sensor (ECTS) signal input [EGR cooler tube]
 Engine Coolant Sensor (ECTS) [EGR cooler tube]
11
 Sensor ground
 Engine Coolant Sensor (ECTS) [EGR cooler tube]
12
 Vehicle signal input
 Active Hydraulic Boost (AHB) System
Smart key control module
13
 -
 　
14
 -
 　
15
 Accelerator Position Sensor (APS) 2 signal input
 Accelerator Position Sensor (APS) 2
16
 Sensor power (+5V)
Accelerator Position Sensor (APS) 2
17
 Sensor power (+5V)
Manifold Absolute Pressure Sensor (MAPS) & Intake Air Temperature Sensor (IATS)
18
 Sensor power (+5V)
Accelerator Position Sensor (APS) 1
19
 Accelerator Position Sensor (APS) 1 signal input
 Accelerator Position Sensor (APS) 1
20
 Sensor power (+5V)
Crankshaft Position Sensor Sensor (CKPS)
A/C Pressure Transducer (APT)
　
21
 -
 　
22
 -
 　
23
 -
 　
24
 Fuel pump relay control
 Fuel pump relay
25
 -
 　
26
 -
 　
27
 -
 　
28
 -
 　
29
 Fuel Pressure Control Valve [Low] control
 Fuel Pressure Control Valve(FPCV)
30
 A/C Pressure Transducer (APT) signal input
 A/C Pressure Transducer (APT)
31
 -
 　
32
 Crankshaft Position Sensor Sensor (CKPS) signal input
 Crankshaft Position Sensor Sensor (CKPS)
33
 -
 　
34
 -
 　
35
 -
 　
36
 -
 　
37
 Sensor ground (-)
 Accelerator Position Sensor (APS) 2
38
 Manifold Absolute Pressure Sensor (MAPS) signal input
 Manifold Absolute Pressure Sensor (MAPS) & Intake Air Temperature Sensor (IATS)
39
 Intake Air Temperature Sensor (IATS) signal input
 Manifold Absolute Pressure Sensor (MAPS) & Intake Air Temperature Sensor (IATS)
40
 Sensor ground (-)
 Manifold Absolute Pressure Sensor (MAPS) & Intake Air Temperature Sensor (IATS)
41
 Sensor ground (-)
 Accelerator Position Sensor (APS) 1
42
 -
 　
43
 -
 　
44
 Mass Air Flow Sensor (MAFS) signal input
 Mass Air Flow Sensor (MAFS)
45
 Sensor ground (-)
 Mass Air Flow Sensor (MAFS)
46
 Main Relay control
 Main Relay
47
 Variable Force Solenoid (VFS) [Bank 1/ Intake] control
 Variable Force Solenoid (VFS) [Bank 1/ Intake]
48
 　
 　
49
 -
 　
50
 -
 　
51
 Battery power (B+)
 Ignition Switch
52
 -
 　
53
 -
 　
54
 Sensor ground (-)
 Crankshaft Position Sensor Sensor (CKPS)
55
 P-CAN [High]
 Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
56
 H-CAN [High]
 Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
57
 -
 　
58
 Immobilizer communication line
 Smart key control module
59
 -
 　
60
 Engine Coolant Sensor (ECTS) signal input [Water Temperature Control Assembly]
 Engine Coolant Sensor (ECTS) [Water Temperature Control Assembly]
61
 Sensor ground
 Engine Coolant Sensor (ECTS) [Water Temperature Control Assembly]
62
 　
 　
63
 -
 　
64
 Ignition Coil (Cylinder #2) control
 Ignition Coil (Cylinder #2)
65
 Ignition Coil (Cylinder #3) control
 Ignition Coil (Cylinder #3)
66
 -
 　
67
 -
 　
68
 Cooling fan relay control
 Cooling Fan Relay
69
 -
 　
70
 CVVT Oil Control Valve (OCV)  (OCV) [Bank 1/ Exhaust] control
 CVVT Oil Control Valve (OCV)  (OCV) [Bank 1/ Exhaust]
71
 -
　
72
 -
　
73
 Battery power (B+)
 Battery
74
 -
　
75
 Sensor ground (-)
 A/C Pressure Transducer (APT)
76
 Local Interconnect Network (LIN) Serial Bus Line
 Battery Sensor
77
 P-CAN [Low]
 Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
78
 H-CAN [Low]
 Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
79
 -
　
80
 -
　
81
 -
　
82
 -
　
83
 -
　
84
 -
　
85
 -
　
86
 Ignition Coil (Cylinder #4) control
 Ignition Coil (Cylinder #4)
87
 Ignition Coil (Cylinder #1) control
 Ignition Coil (Cylinder #1)
88
 -
　
89
 -
　
90
 -
 　
91
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor1] Heater control
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
92
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor2] Heater control
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1]
93
 Purge Control Solenoid Valve (PCSV) control
 Purge Control Solenoid Valve (PCSV)
94
 -
 　

ECM Terminal Input/Output Signal

Connector [A]

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. 50mV
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 (3,000rpm)
10
 -
 　
 　
 　
11
 Brake switch [Test] signal input
 Brake OFF
 DC Voltage
 Battery Voltage (B+)
Brake ON
 Max. 50mV
12
 Brake switch [Lamp] signal input
 Brake OFF
 DC Voltage
 Max. 50mV
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. 50mV
22
 Sensor ground (-)
 Idle
 DC Voltage
 Max. 50mV
23
 -
 　
 　
 　
24
 Sensor ground (-)
 Idle
 DC Voltage
 Max. 50mV
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. 50mV
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. 50mV
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 (3,000rpm)
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. 50mV
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.1.0V
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. 50mV
IG ON
 4.9 - 5.1V
52
 Electric load  signal input
 Lamp OFF
 DC Voltage
 Battery Voltage (B+)
Lamp ON
 Max. 50mV
53
 Sensor ground
 Idle
 DC Voltage
 Max. 50mV
54
 Sensor ground
 Idle
 DC Voltage
 Max. 50mV
55
 EGR Valve (Feedback signal)
 　
 　
 　
56
 -
 　
 　
 　
57
 -
 　
 　
 　
58
 VS+ (NERNST cell voltage)
 Idle
 Analog
 Normal: 450±50mV
Rich: Max. Normal+150mV
Lean: Min. Normal-150mV
59
 Rc/Rp (Pumping cell voltage)
 Idle
 Analog
 Normal: 450±50mV
Rich: Max. Normal+150mV
Lean: Min. Normal-150mV
60
 Heated Oxygen Sensor [Bank 1/Sensor 2] signal input
 Idle
 DC Voltage
 Rich: 0.6 - 1.0V
Lean: Max. 0.4V

Connector [K]

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

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. 50mV
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. 50mV
IG ON
 4.9 - 5.1V
17
 Sensor power (+5V)
 IG OFF
 DC Voltage
 Max. 50mV
IG ON
 4.9 - 5.1V
18
 Sensor power (+5V)
 IG OFF
 DC Voltage
 Max. 50mV
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. 50mV
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

30
 A/C Pressure Transducer (APT) signal input
 A/C ON
 Analog
 0.348 - 4.63 V
31
 -
 　
 　
 　
32
 Crankshaft Position Sensor Sensor (CKPS) signal input
 Engine Run
 Pulse
 High: 4.5 - 5.5V
Low: - 0.3 - 0.5V
Frequency: 850Hz (Idle), 3,000Hz (3,000rpm)
33
 -
 　
 　
 　
34
 -
 　
 　
 　
35
 -
 　
 　
 　
36
 -
 　
 　
 　
37
 Sensor ground (-)
 Idle
 DC Voltage
 Max. 50mV
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. 50mV
41
 Sensor ground (-)
 Idle
 DC Voltage
 Max. 50mV
42
 -
 　
 　
 　
43
 -
 　
 　
 　
44
 Mass Air Flow Sensor (MAFS) signal input
 　
 　
 　
45
 Sensor ground
 Idle
 DC Voltage
 Max. 50mV
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
 -
 　
 　
 　
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. 50mV
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. 50mV
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)  (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. 50mV
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
 　
 　
 　
 　
84
 Sensor ground (-)
 Idle
 DC Voltage
 Max. 50mV
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
 -
 　
 　
 　
91
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor1] Heater control
 Engine Run
 Pulse
 High: Battery Voltage (B+)
Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
92
 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor2] Heater control
 Engine Run
 Pulse
 High: Battery Voltage (B+)
Low: -0.3 - 1.0V
Frequency: 8 - 10Hz
Duty: 0 - 100%
93
 Purge Control Solenoid Valve (PCSV) control
 Inactive Active
 Pulse
 High: Battery Voltage (B+)
Low: Max. 1.0V
Vpeak: 42.0 - 60.0V
Frequency: 20Hz
94
 -
 　
 　
 　

Description and operation
Description If the Gasoline Engine Control system components (sensors, ECM, injector, etc.) fail, interruption to the fuel supply or failure to supply the proper amount of fuel for va ...

Engine Control Module (ECM) Repair procedures
Removal 1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal. 2. Disconnect the TCM connectors (A). ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Camshaft Position Sensor (CMPS) Description and operation
Description Camshaft Position Sensor (CMPS) is a hall sensor, which detects the camshaft position by using a hall element. It is related with Crankshaft Position Sensor (CKPS) and detects the piston position of each cylinder which cannot be detected by the CKPS. The CMPS is inst ...

Kia Niro 2017 (DE HEV) Service Manual: General information
Basic Service Symbols There are five primary symbols used to complement illustrations. These symbols indicate the part to apply such materials during service. Symbol Meaning Do not reuse the part. Replace a new one. ...

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