Hyundai i-30: Engine Control System / Engine Control Module (ECM)

Hyundai i30 (PD) 2018-2024 Service Manual / Engine Control / Fuel System / Engine Control System / Engine Control Module (ECM)

Schematic diagrams
ECM Terminal and Input / Output signal
ECM Harness Connector

ECM Terminal Function
Connector [A]
Terminal
Description
1
Fuel Pressure Regulator Valve (FPRV) [High] Control
2
Integrated Thermal Management Module (ITM) Motor (+)
3
Integrated Thermal Management Module (ITM) Motor (-)
4
Exhaust Gas Temperature Sensor (EGTS) #2 (T4) Ground [GPF Type]
5
Engine Coolant Temperature Sensor (ECTS) #1 Ground
6
-
7
Engine Coolant Temperature Sensor (ECTS) #2 Ground
8
Differential Pressure Valve (DPV) Ground
9
Rail Pressure Sensor (RPS) Ground
10
Exhaust Gas Temperature Sensor (EGTS) Ground
11
Manifold Absolute Pressure Sensor (MAPS) Ground
12
Electric Waste Gate Control Actuator (EWGA) Ground
13
EGR Pressure Sensor Ground
14
Oil Pressure & Temperature Sensors (OPTS) Ground
15
Electric Exhaust Gas Recirculation (EEGR) Control Valve Ground
16
-
17
A/C Pressure Transducer (APT) Ground
18
Sensor Power (+5V) (Camshaft Position Sensor (CMPS) [Bank 1 / Intake, Exhaust])
19
Sensor Power (+5V) (Manifold Absolute Pressure Sensor (MAPS))
Sensor Power (+5V) (Electric Exhaust Gas Recirculation (EEGR))
Sensor Power (+5V) (Crankshaft Position Sensor (CKPS))
20
Sensor Power (+5V) (Oil Pressure & Temperature Sensors (OPTS))
Sensor Power (+5V) (Electric Throttle Control Module (ETC))
Sensor Power (+5V) (Rail Pressure Sensor (RPS))
21
Throttle Position Sensor (TPS) Ground
22
Electric Exhaust Gas Recirculation (EEGR) Control Valve Motor (+)
23
Electric Exhaust Gas Recirculation (EEGR) Control Valve Motor (-)
24
Knock Sensor (KS ) Shield Ground
25
-
26
Ignition Coil (Cylider #3) Control
27
-
28
-
29
Exhaust Gas Temperature Sensor (EGTS) #1 (T3) Ground [GPF Type]
30
-
31
-
32
-
33
EGR Pressure Sensor Signal
34
-
35
Integrated Thermal Management Module (ITM) Motor Ground
36
-
37
Camshaft Position Sensor (CMPS) [Bank 1 / Intake] Signal
38
-
39
Electric Waste Gate Control Actuator (EWGA) Signal
40
Sensor Power (+5V) (EGR Pressure Sensor)
Sensor Power (+5V) (Electric Waste Gate Control Actuator (EWGA))
41
Sensor Power (+5V) (Accelerator Position Sensor (APS #1))
42
Sensor Power (+5V) (Brake Booster Vacuum Pressure Sensor (BBVPS))
Sensor Power (+5V) (A/C Pressure Transducer (APT))
43
Injector (Cylinder #3) [+] Control
44
Injector (Cylinder #2) [+] Control
45
-
46
-
47
CCP-CAN [High]
48
Ignition Coil (Cylinder #1) Control
49
-
50
Neutral Switch [With ISG]
51
-
52
-
53
-
54
Exhaust Gas Temperature Sensor (EGTS) #1 (T3) Signal [GPF Type]
55
-
56
Exhaust Gas Temperature Sensor (EGTS) #2 (T4) Signal [GPF Type]
57
-
58
Differential Pressure Sensor (DPS) Signal
59
Exhaust Gas Temperature Sensor (EGTS) Signal
60
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] Ground
61
Mass Air Flow Sensor (MAFS) Signal
62
-
63
Engine Speed Signal Output
64
Injector (Cylinder #1) [+] Control
65
Injector (Cylinder #4) [+] Control
66
Injector (Cylinder #3) [-] Control
67
Injector (Cylinder #4) [-] Control
68
Ignition Coil (Cylider #2) Control
69
CCP-CAN [Low]
70
Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] Signal
71
Crankshaft Position Sensor (CKPS) Ground
72
Ignition Lock Switch [M/T & Without Smart Key]
73
Oil Pressure Sensor (OPS) Signal
74
Intake Air Temperature Sensor (IATS) Signal
75
Engine Coolant Temperature Sensor (ECTS) #1 Signal
76
Engine Coolant Temperature Sensor (ECTS) #2 Signal
77
Electric Exhaust Gas Recirculation (EEGR) Control Valve Signal
78
Differential Pressure Valve (DPV) Signal
79
Throttle Position Sensor (TPS) #2 Signal
80
Rail Pressure Sensor (RPS) Signal
81
-
82
Integrated Thermal Management Module (ITM) Motor Signal
83
Mass Air Flow Sensor (MAFS) Ground
84
A/C Pressure Transducer (APT) Signal
85
-
86
Injector (Cylinder #2) [-] Control
87
Injector (Cylinder #1) [-] Control
88
Fuel Pressure Regulator Valve (FPRV) [Low] Control
89
Differential Pressure Sensor (DPS) Ground
90
Ignition Coil (Cylinder #4) Control
91
Crankshaft Position Sensor (CKPS) Signal
92
-
93
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] Ground
94
-
95
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] Signal
96
-
97
Oil Temperature Sensor (OTS) Signal
98
Throttle Position Sensor (TPS) #1 Signal
99
-
100
-
101
Manifold Absolute Pressure Sensor (MAPS) Signal
102
Camshaft Position Sensor (CMPS) [Bank 1/Intake] Ground
103
-
104
Knock Sensor (KS) Signal
105
Knock Sensor (KS) Ground

Connector [B]
Terminal
Description
1
Chassis Ground
2
Chassis Ground
3
Battery Power (B+) (Battery)
4
Chassis Ground
5
Battery Power (B+) (Main Relay)
6
Battery Power (B+) (Main Relay)
7
-
8
-
9
Sensor Power (+5V) (Integrated Thermal Management Module (ITM) Motor)
Sensor Power (+5V) (Mass Air Flow Sensor (MAFS))
10
Sensor Power (+5V) (Accelerator Position Sensor (APS) #2)
11
Boost Pressure Sensor (BPS) Signal Input
12
Accelerator Position Sensor (APS) #2 Ground
13
Accelerator Position Sensor (APS) #1 Ground
14
Brake Booster Vacuum Pressure Sensor (BBVPS) Ground [With ISG]
15
-
16
Boost Pressure Sensor (BPS) Ground
17
Fuel Level Sender (FLS) Signal
18
Accelerator Position Sensor (APS #2) Signal
19
-
20
-
21
-
22
RCV Control Solenoid Valve Control
23
Cooling Fan Relay [PWM] Control
24
Electric Waste Gate Control Actuator (EWGA) DC Motor (+) Control
25
Electric Waste Gate Control Actuator (EWGA) DC Motor (-) Control
26
Ignition Switch Signal Input
27
Sensor Power (+5V) (Differential Pressure Sensor (DPS))
Sensor Power (+5V) (Differential Pressure Valve (DPV))
Sensor Power (+5V) (Boost Pressure Sensor (BPS))
28
-
29
-
30
Brake Light Switch Signal Input
31
Brake Test Switch Signal Input
32
Accelerator Position Sensor (APS #1) Signal
33
-
34
ISG OFF Switch Signal Input [With ISG]
35
Start Signal Input
36
-
37
Fuel Pump Relay Control [W/O Smart Key]
38
DC/DC Converter (LDC) Control [With ISG]
39
-
40
Variable Oil Pump Valve Control
41
ETC Motor [+] Control
42
ETC Motor [-] Control
43
-
44
LIN communication signal input
45
C-CAN (Low)
46
-
47
-
48
Clutch Switch [M/T]
49
Wiper Switch Signal Input
50
Blower Motor MAX Input
51
Start Relay Control (Low Side)
52
-
53
-
54
Rear Defrost Switch Signal Input
55
-
56
-
57
-
58
Differential Pressure Valve (DPV) DC Motor (+) Control
59
Differential Pressure Valve (DPV) DC Motor (-) Control
60
Battery Power (B+) (Battery)
61
LIN Communication Signal input
62
C-CAN (High)
63
Brake Booster Vacuum Pressure Sensor (BBVPS) Signal [With ISG]
64
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] VS+ (NERNST Cell Voltage)
65
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Rc (Compensative Resistance)
66
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Rc/Rp (Pump Cell Voltage)
67
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] VS-/IP- (Common Ground for VS, IP)
68
-
69
A/C Compressor Relay Control
70
-
71
Start Relay Control (High side)
72
-
73
-
74
Engine Control Relay Control
75
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Heater Control
76
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] Heater Control
77
Vehicle Speed Signal Input
78
CCP-CAN [High]
79
CCP-CAN [Low]
80
-
81
-
82
-
83
Purge Control Solenoid Valve (PCSV) Control
84
Fuel Pump Relay Control [With Smart Key]
85
ISG OFF Switch (IND.) [With ISG]
86
-
87
Immobilizer signal input
88
-
89
-
90
-
91
-
92
Variable Force Solenoid (VFS) [Bank 1 / Intake] Control
93
CVVT Oil Control Valve (OCV) [Bank 1 / Exhaust] Control

Repair procedures
Removal
  
When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.
[In the case of installing used ECM]
1)
Perform "ECM Neutral mode" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
2)
After finishing "ECM Neutral mode", perform "Key teaching" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
[In the case of installing new ECM]
Perform "Key teaching" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
  
When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.
[In the case of installing used ECM]
1)
Perform "ECM Neutral mode" procedure with diagnostic tool.
(Refer to Body Electrical System - "Smart Key")
2)
After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
[In the case of installing new ECM]
Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the battery.
3.
Disconnect the ECM Connector (A).

4.
Remove the installation bolts and then remove the ECM (A).
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

5.
Remove the installation bolts (A), and then remove the ECM from the bracket.
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Installation
  
When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.
[In the case of installing used ECM]
1)
Perform "ECM Neutral mode" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
2)
After finishing "ECM Neutral mode", perform "Key teaching" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
[In the case of installing new ECM]
Perform "Key teaching" procedure with diagnostic tool.
(Refer to Body Electrical System - "Immobilizer System")
  
When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.
[In the case of installing used ECM]
1)
Perform "ECM Neutral mode" procedure with diagnostic tool.
(Refer to Body Electrical System - "Smart Key")
2)
After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
[In the case of installing new ECM]
Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
1.
Install in the reverse order of removal.
ECM Problem Inspection Procedure
1.
TEST ECM GROUND CIRCUIT : Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repair it.
Specification : Below 1Ω
2.
TEST ECM CONNECTOR : Disconnect the ECM connector and visually check the ground terminals on ECM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
3.
If problem is not found in Step 1 and 2, the ECM could be faulty. If so, make sure there were no DTC's before swapping the ECM with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping ECM.
4.
RE-TEST THE ORIGINAL ECM : Install the original ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original ECM with a new one. If problem does not occur, this is intermittent problem.
(Refer to "Intermittent Problem Inspection Procedure" in Basic Inspection Procedure)
VIN Programming Procedure
VIN (Vehicle Identification Number) is a number that has the vehicle's information (Maker, Vehicle Type, Vehicle Line/Series, Body Type, Engine Type, Transmission Type, Model Year, Plant Location and so forth. For more information, please refer to the group "GI" in this SERVICE MANUAL). When replacing an ECM, the VIN must be programmed in the ECM. If there is no VIN in ECM memory, the fault code (DTC P0630) is set.
  
The programmed VIN cannot be changed. When writing the VIN, confirm the VIN carefully
1.
Turn OFF the ignition switch.
2.
Connect the diagnostic tool to data link connector (DLC).
3.
Turn ON the ignition switch.
4.
Select "Vehicle, Model Year, Engine, System".
5.
Select "Vehicle S/W Management".
6.
Select "Write VIN".

7.
Input the VIN.
  
Before inputing the VIN, confirm the VIN again because the programmed VIN cannot be changed.

    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 various engine operating conditions will result...

    Mass Air Flow Sensor (MAFS)

    Description and operation Description MAFS uses a hot-film type sensing element to measure the mass of intake air entering the engine, and send the signal to ECM...

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