Hyundai Santa Cruz: Engine Control System / Engine Control Module (ECM)

- ECM Terminal And Input/Output signal

ECM Terminal Function

Connector [A]

Pin No	Description
1	Integrated Thermal Mangement Module (ITM) Motor (+)
2	Integrated Thermal Mangement Module (ITM) Motor (-)
3	-
4	-
5	-
6	-
7	ETC Motor control (+)
8	ETC Motor control (-)
9	Cooling Pan PWM control
10	Vehicle Speed signal output
11	Engine Control Relay control
12	Fuel Pump Relay control
13	Coolant Temperature Sensor [Electronic water pump (EWP) side] signal input
14	-
15	-
16	Intake Air Temperature Sensor (IATS) signal input
17	Manifold Absolute Pressure Sensor (MAPS) signal input
18	-
19	A/C #1 Relay control
20	-
21	-
22	EWGA DC Motor control (+)
23	EWGA DC Motor control (-)
24	-
25	-
26	RCV Control Solenoid Valve control
27	-
28	Coolant Temperature Sensor [Cylinder Block side] signal input
29	-
30	Integrated Thermal Mangement Module (ITM) Motor signal input
31	Crankshaft Position Sensor (CKPS) signal input
32	-
33	Sensor Sheild [KS]
34	Sensor ground [Coolant Temperature Sensor (Electronic Water Pump (EWP) Side)]
35	Oil Pressure signal input
36	-
37	Boost Pressure Sensor (BPS) signal input
38	Sensor ground [MAPS]
39	-
40	Sensor ground [BPS]
41	-
42	-
43	-
44	-
45	-
46	Variable Force Solenoid (VFS) control
47	Canister Close Valve (CCV) control
48	-
49	Sensor ground [RPS]
50	-
51	Sensor Ground [CMPS (Bank 1 / Exhaust)]
52	Sensor Ground [CMPS (Bank 1 / Intake)]
53	Sensor ground [CKPS]
54	Sensor ground [TPS]
55	Sensor ground [ECTS (Water Temperature Control Assembly side)]
56	Sensor ground [OPTS]
57	-
58	Sensor ground [EWGA]
59	Sensor ground [ECTS (Cylinder Block side)]
60	-
61	Sensor ground [ITM motor]
62	-
63	-
64	E-CVVT relay power
65	E-CVVT motor [+] control
66	Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] Heater Control
67	Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Heater Control
68	-
69	-
70	Rail Pressure Sensor (RPS) Signal Input
71	Start Relay (High) control
72	Camshaft Postition Sensor (CMPS) [Bank 1/Exhaust] signal input
73	-
74	Throttle Position Sensor (TPS) #2 signal input
75	Throttle Position Sensor (TPS) #1 signal input
76	-
77	Oil Temperature signal input
78	Sensor Power (+5V) [CMPS (Bank 1 / Intake), CKPS, MAPS, BPS]
79	Sensor Power (+5V) [TPS]
80	-
81	Sensor ground [KS]
82	Rc (Compensative Resistance)
83	Rc/Rp (Pumping cell Voltage)
84	Sensor Ground [HO2S (Bank 1 / Sensor 2)]
85	E-CVVT relay power
86	E-CVVT motor [+] control
87	E-CVVT motor [-] control
88	E-CVVT motor [-] control
89	-
90	-
91	Electric Waste Gate Actuator (EWGA) Position Sensor Feedback Signal Input
92	-
93	-
94	Camshaft Position Sensor (CMPS) [Bank 1 / Intake] Signal Input
95	-
96	Start Motor Control Switch
97	Coolant Temperature Sensor [Coolant Temperature Control Assembly side] signal input
98	-
99	Sensor Power (+5V) [RPS]
100	Sensor Power (+5V) [CMPS (Bank 1 / Exhaust), EWGA]
101	Sensor Power (+5V) [OPTS, ITM Motor]
102	Knock Sensor (KS) signal input
103	VS+ (NERNST Cell Voltage)
104	VS-/IP- (Virtual Ground)
105	Oxygen Sensor [Bank 1 / Sensor 2] signal input

Connecter [K]

Pin No	Description
1	ECM Ground
2	ECM Ground
3	Battery Power (B+)
4	ECM Ground
5	Battery Power (B+)
6	Battery Power (B+)
7	-
8	MPI Injector (Cylinder #4) control
9	MPI Injector (Cylinder #1) control
10	MPI Injector (Cylinder #3) control
11	MPI Injector (Cylinder #2) control
12	Ignition Coil (Cylinder #3) control [Without Smart Key]
	Ignition Coil (Cylinder #2) control [Apply SmartKey]
13	Ignition Coil (Cylinder #1) control [Without Smart Key]
	Ignition Coil (Cylinder #4) control [Apply SmartKey]
14	Ignition Coil (Cylinder #2) control [Without Smart Key]
	Ignition Coil (Cylinder #3) control [Apply SmartKey]
15	Ignition Coil (Cylinder #4) control [Without Smart Key]
	Ignition Coil (Cylinder #1) control [Apply SmartKey]
16	Sensor Power (+5V) [APT, FTPS]
17	Accelerator Position Sensor (APS) #2 signal input
18	-
19	-
20	-
21	-
22	GDI Injector (Cylinder #2) [Low] Control
23	GDI Injector (Cylinder #3) [Low] Control
24	-
25	-
26	-
27	-
28	Brake Switch (Test) signal input
29	-
30	-
31	-
32	-
33	Fuel Tank Level Sender (FLS) signal input
34	-
35	-
36	-
37	Engine Speed signal output
38	Oil Pump Solenoid Valve control
39	GDI Injector (Cylinder #2) [High] Control
40	GDI Injector (Cylinder #3) [High] Control
41	ON/START Power
42	-
43	-
44	-
45	-
46	-
47	-
48	-
49	Sensor Ground (APT)
50	-
51	Sensor graund (APS #2)
52	-
53	-
54	-
55	-
56	High Pressure Fuel Pump [High] Control
57	High Pressure Fuel Pump [Low] Control
58	Immobilizer (Smart Key) communication line
59	Local-CAN (Low) #1
60	P-CAN (Low)
61	Local-CAN (Low) #1 [longitudinal resistance]
62	-
63	Sensor ground (FTPS)
64	-
65	Sensor ground (APS #1)
66	A/C Pressure Transducer (APT) signal input
67	-
68	Brake Switch (Lamp) signal input
69	-
70	-
71	-
72	Purge Control Solenoid Valve (PCSV) control
73	GDI Injector (Cylinder #1) [High] Control
74	GDI Injector (Cylinder #4) [High] Control
75	Battery Power (B+)
76	Local-CAN (High) #1
77	P-CAN (High)
78	Local-CAN (Low) #1 [longitudinal resistance]
79	-
80	Fuel Tank Pressure Sensor (FTPS) signal input
81	Accelerator Position Sensor (APS) #1 signal input
82	-
83	Sensor Power (+5V) [APS #1]
84	Sensor Power (+5V) [APS #2]
85	Alternator (LIN2)
86	-
87	-
88	E-CVVT relay control
89	-
90	GDI Injector (Cylinder #1) [Low] Control
91	GDI Injector (Cylinder #4) [Low] Control

- Removal

1.Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2. Remove the air cleaner assembly.(Refer to Engine Mechanical System - "Air Cleaner")

3.Disconnect the ECM connector (A).

4.Release the fixing hook (A), and then removing the ECM (B).

5.Remove the ECM after loosening the mounting bolts (A).

Tightening torque :6.9 - 8.8 N.m (0.7 - 0.9 kgf.m, 5.1 - 6.5 lb-ft)

- Installation

1.Install in the reverse order of removal.

- Inspection

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.

3.If problem is not found in Step 1 and 2, the ECM could be faulty. If so, replace the ECM with a new one, and then check the vehicle again. If the vehicle operates normally then the problem was likely with the ECM.

4.RE- TEST ECM : Install the ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the ECM with a new one. If problem does not occur, this is intermittent problem.(Refer to "Intermittent Problem Inspection Procedure" in Basic Inspection Procedure)

- Adjustment ECM neutralization procedure (With immobilizer)

• When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.

[When installing an ECM with learning experience]

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")

[A new ECM with no learning experience is installed.]

– Perform "Key Teaching" procedure with diagnostic tool.(Refer to Body Electrical System - "Immobilizer System")

ECM Neutralization procedure (With smart key)

• When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.

[When installing an ECM with learning experience]

1)Perform "ECM Neutral Mode" procedure with diagnostic tool.(Refer to Body Electrical System - "Smart Key")

2)After finishing "ECM Neutral Mode", Use a 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.(Refer to Body Electrical System - "Smart Key")

[A new ECM with no learning experience is installed.]

– Using the key or start button and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.(Refer to Body Electrical System - "Smart Key")

ETC Module Learning Process After replacing or reinstalling the new ECM, if you do not perform the ETC module learning procedure, the ETC module learning procedure must be performed since shift shock or failure code may be displayed.(Refer to Engine Control System - "ETC System")VIN Programming Procedure VIN (Vehicle Identification Number) is a number with 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) will be set.

   

• The programmed VIN cannot be changed. When writing the VIN, confirm the VIN carefully.

1.Turn the ignition switch OFF.

2.Connect the diagnostic tool to Data Link Connector (DLC).

3.Turn the igntion switch ON.

4."Select "Vehicle, Model Year, Engine, System".

5.Select "Additional Function".

6.Select "Write VIN".

7.Perform the operation in accordance with the instructions of diagnostic tool.

   

• The programmed VIN cannot be changed. When writing the VIN, reconfirm the VIN.