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ECM Terminal And Input/output Signal

ECM Harness Connector 

Fig 1: Identifying ECM Harness Connector Terminals
G06861338Courtesy of HYUNDAI MOTOR CO.

ECM Terminal Function 

Connector [CLG-A] 

TERMINALS REFERENCE

Pin No. Description Connected to
1 2nd CAN [High] Multi-Purpose Check Connector
2 2nd CAN [Low] Multi-Purpose Check Connector
3 -  
4 -  
5 -  
6 -  
7 -  
8 -  
9 -  
10 -  
11 -  
12 -  
13 -  
14 -  
15 Alternator load signal input Alternator
16 Cruise Switch ground Cruise Switch
17 Sensor ground Fuel Tank Pressure Sensor (FTPS)
18 Air conditioner switch "ON" signal input Air Conditioner Control Module
19 -  
20    
21 Brake switch signal input Brake Switch
22 -  
23 Brake lamp signal input Brake Lamp
24 -  
25 Cruise Switch signal input Cruise Switch
26 Air conditioner blower switch signal input Air Conditioner Control Module
27 -  
28 Fuel Tank Pressure Sensor signal input Fuel Tank Pressure Sensor (FTPS)
29 Fuel level signal input Fuel Lever Sensor (FLS)
30 Fuel level (Middle) signal input Fuel Lever Sensor (FLS)
31 -  
32 A/C Pressure Transducer signal input A/C Pressure Transducer (APT)
33 Sensor ground A/C Pressure Transducer (APT), Power Steering Pressure Sensor (PSPS)
34 -  
35 -  
36 -  
37 Canister Close Valve control output Canister Close Valve (CCV)
38 Battery voltage supply after main relay Main Relay
39 Battery voltage supply after main relay Main Relay
40 Battery voltage supply after main relay Main Relay
41 CAN [High] TCM, ABS/ESC Control Module, AWD Control Module, Data Link Connector (DLC)
42 CAN [Low] TCM, ABS/ESC Control Module, AWD Control Module, Data Link Connector (DLC)
43 Main Relay control output Main Relay
44 Intake Air Temperature Sensor signal input Intake Air Temperature Sensor (IATS)
45 Immobilizer communication line Immobilizer
46 Power Steering Pressure Sensor signal input Power Steering Pressure Sensor (PSPS)
47 Mass Air Flow Sensor signal input Mass Air Flow Sensor (MAFS)
48 Sensor Ground Accelerator Position Sensor (APS) #2
49 Accelerator Position Sensor #2 signal input Accelerator Position Sensor (APS) #2
50 -  
51 -  
52 Vehicle speed signal input ABS/ESP Control Module (With ABS/ESC)
53 Sensor ground Intake Air Temperature Sensor (IATS)
54 Accelerator Position Sensor #1 signal input Accelerator Position Sensor (APS) #1
55 Sensor ground Accelerator Position Sensor (APS) #1
56 Sensor Power (+5V) Fuel Tank Pressure Sensor (FTPS)
57 Sensor power (+5V) Accelerator Position Sensor (APS) #2
58 Sensor power (+5V) A/C pressure Transducer (APT), Power Steering Pressure Sensor (PSPS)
59 Sensor Power (+5V) Accelerator Position Sensor (APS) #1
60 -  
61 Engine speed signal output Semi Active Engine Mounting Control Module
62 -  
63 Malfunction Indicator Lamp (MIL) control output Cluster (Malfunction Indicator Lamp)
64 Air Conditioner Compressor Relay control output Air Conditioner Compressor Relay
65 Cooling Fan Relay [Low] control output Cooling Fan Relay [Low]
66 Cooling Fan Relay [High] control output Cooling Fan Relay [High]
67 -  
68 -  
69 -  
70 Fuel Pump Relay control output Fuel Pump Relay
71 Variable Intake Solenoid Valve control output Variable Intake Solenoid (VIS) Valve
72 Immobilizer lamp control output Immobilizer Lamp
73 -  
74 -  
75 -  
76 -  
77 -  
78 Purge Control Solenoid Valve control output Purge Control Solenoid Valve (PCSV)
79 -  
80 -  

Connector [CLG-B] 

TERMINALS REFERENCE

Pin No. Description Connected to
1 ETC Motor [-] control output ETC Motor (in ETC Module)
2 ETC Motor [+] control output ETC Motor (in ETC Module)
3 -  
4 CVVT Oil Temperature Sensor signal input CVVT Oil Temperature Sensor (OTS)
5 -  
6 -  
7 Engine Coolant Temperature Sensor signal input Engine Coolant Temperature Sensor (ECTS)
8 Manifold Absolute Pressure Sensor signal input Manifold Absolute Pressure Sensor (MAPS)
9 -  
10 -  
11 Sensor power (+5V) Manifold Absolute Pressure Sensor (MAPS)
12 Battery voltage supply after ignition switch Ignition Switch
13 Sensor power (+5V) Throttle Position Sensor (TPS) #2
14 Sensor ground Throttle Position Sensor (TPS) #1
15 Sensor power (+5V) Camshaft Position Sensor (CMPS) [Bank 2]
16 Sensor power (+5V) Throttle Position Sensor (TPS) #1
17 Sensor ground Camshaft Position Sensor (CMPS) [Bank 2]
18 Sensor ground Camshaft Position Sensor (CMPS) [Bank 1]
19 Ignition Coil (Cylinder #6) control output Ignition Coil (Cylinder #6)
20 -  
21 Crankshaft Position Sensor [High] signal input Crankshaft Position Sensor (CKPS)
22 -  
23 Sensor Shield Crankshaft Position Sensor (CKPS), Knock Sensor (KS) #1, 2
24 Camshaft Position Sensor [Bank 2] signal input Camshaft Position Sensor (CMPS) [Bank 2]
25 Camshaft Position Sensor [Bank 1] signal input Camshaft Position Sensor (CMPS) [Bank 1]
26 -  
27 -  
28 Sensor ground HO2S (B2/S1)
29 Sensor ground HO2S (B2/S2)
30 Sensor ground HO2S (B1/S1)
31 Sensor ground HO2S (B1/S2)
32 Sensor power (+5V) Camshaft Position Sensor (CMPS) [Bank 1]
33 Sensor ground Engine Coolant Temperature Sensor (ECTS)
34 Sensor ground Manifold Absolute Pressure Sensor (MAPS), CVVT Oil Temperature Sensor (OTS)
35 Power ground Chassis Ground
36 Power ground Chassis Ground
37 Power ground Chassis Ground
38 Power ground Chassis Ground
39 Power ground Chassis Ground
40 Ignition Coil (Cylinder #4) control output Ignition Coil (Cylinder #4)
41 Crankshaft Position Sensor [Low] signal input Crankshaft Position Sensor (CKPS)
42 -  
43 -  
44 -  
45 -  
46 -  
47 -  
48 Throttle Position Sensor #1 signal input Throttle Position Sensor (TPS) #1
49 Heated Oxygen Sensor [Bank 1/Sensor 1] signal input HO2S (B1/S1)
50 Heated Oxygen Sensor [Bank 1/Sensor 2] signal input HO2S (B1/S2)
51 Heated Oxygen Sensor [Bank 2/Sensor 1] signal input HO2S (B2/S1)
52 Heated Oxygen Sensor [Bank 2/Sensor 2] signal input HO2S (B2/S2)
53 Knock Sensor (KS) #2 [High] signal input Knock Sensor (KS) #2 [High]
54 Knock Sensor (KS) #2 [Low] signal input Knock Sensor (KS) #2 [Low]
55 Knock Sensor (KS) #1 [Low] signal input Knock Sensor (KS) #1 [Low]
56 Knock Sensor (KS) #1 [High] signal input Knock Sensor (KS) #1 [High]
57 Throttle Position Sensor #2 signal input Throttle Position Sensor (TPS) #2
58 Sensor ground Throttle Position Sensor (TPS) #2
59 -  
60 Ignition Coil (Cylinder #2) control output Ignition Coil (Cylinder #2)
61 CVVT Oil Control Valve [Bank 2] control output CVVT Oil Control Valve (OCV) [Bank 2]
62 CVVT Oil Control Valve [Bank 1] control output CVVT Oil Control Valve (OCV) [Bank 1]
63 Injector (Cylinder #2) control output Injector (Cylinder #2)
64 Injector (Cylinder #3) control output Injector (Cylinder #3)
65 -  
66 -  
67 Heated Oxygen Sensor [Bank 2/Sensor 1] Heater control output HO2S (B2/S1)
68 Injector (Cylinder #4) control output Injector (Cylinder #4)
69 Injector (Cylinder #5) control output Injector (Cylinder #5)
70 Heated Oxygen Sensor [Bank 1/Sensor 1] Heater control output HO2S (B1/S1)
71 Injector (Cylinder #6) control output Injector (Cylinder #6)
72 Injector (Cylinder #1) control output Injector (Cylinder #1)
73 Heated Oxygen Sensor [Bank 2/Sensor 2] Heater control output HO2S (B2/S2)
74 Heated Oxygen Sensor [Bank 1/Sensor 2] Heater control output HO2S (B1/S2)
75 -  
76 Power Supply (B+) Battery
77 Ignition Coil (Cylinder #3) control output Ignition Coil (Cylinder #3)
78 Ignition Coil (Cylinder #5) control output Ignition Coil (Cylinder #5)
79 Ignition Coil (Cylinder #1) control output Ignition Coil (Cylinder #1)
80 -  

ECM Terminal Input/output Signal 

Connector [CLG-A] 

TERMINALS REFERENCE

Pin No. Description Condition Type Level Test Result
1 2nd CAN [High] Idle DC 2.0 ~ 3.0V 2.5V
2 2nd CAN [Low] Idle DC 2.0 ~ 3.0V 2.5V
3 -        
4 -        
5 -        
6 -        
7 -        
8 -        
9 -        
10 -        
11 -        
12 -        
13 -        
14 -        
15 Alternator load signal input Idle PULSE High: Battery Voltage 13.6V
Low: Max. 1.5V 0V
140 ~ 190Hz 160Hz
16 Cruise Switch ground        
17 Sensor ground Idle DC Max. 50mV 30mV
18 Air conditioner switch "ON" signal input A/C Relay OFF DC Battery Voltage 9.1V
A/C Relay ON Max. 1.0V 0.1V
19 -        
20 -        
21 Brake switch signal input Brake pedal releasing DC Battery Voltage 12.7V
Brake pedal pressing Max. 0.5V 0.03V
22 -        
23 Brake lamp signal input Brake pedal releasing DC Max. 0.5V 0V
Brake pedal pressing Battery Voltage 13.0V
24 -        
25 Cruise Switch signal input        
26 Air conditioner blower switch signal input A/C OFF DC Max. 1.0V 0V
A/C ON Battery Voltage 11.9V
27 -        
28 Fuel Tank Pressure Sensor signal input IG ON DC 1.4 ~ 1.6V  
29 Fuel level signal input        
30 Fuel level (Middle) signal input        
31 -        
32 Air Conditioner Pressure Sensor signal input A/C OFF DC 0 ~ 5.0V  
A/C ON 1.85 ~ 2.2V
33 Sensor ground Idle DC Max. 50mV 40mV
34 -        
35 -        
36 -        
37 Canister Close Valve control output Active Inactive PULSE High: Battery Voltage 14.0V
Low: Max. 1.0V 170mV
38 Battery voltage supply after main relay IG OFF DC Max. 1.0V 0V
IG ON Battery Voltage 12.1V
39 Battery voltage supply after main relay IG OFF DC Max. 1.0V 0V
IG ON Battery Voltage 12.1V
40 Battery voltage supply after main relay IG OFF DC Max. 1.0V 0V
IG ON Battery Voltage 12.1V
41 CAN [High] RECESSIVE PULSE 2.0 ~ 3.0V 3.85V
DOMINANT 2.75~4.5V 2.5V
42 CAN [Low] RECESSIVE PULSE 2.0 ~ 3.0V 2.55V
DOMINANT 2.75~4.5V 1.34V
43 Main Relay control output Relay ON DC Battery Voltage 12.3V
Relay OFF Max. 1.0V 0.87V
44 Intake Air Temperature Sensor signal input Idle Analog 0 ~ 5.0V 1.86V
45 Immobilizer communication line        
46 Power Steering Pressure Sensor signal input        
47 Mass Air Flow Sensor signal input Idle PULSE High: Vref 5.04V
Low: Max. 0.5V 0.27V
Idle: 3.0KHz  
3, 000 rpm High: Vref 5.04V
Low: Max. 0.5V 0.27V
3000rpm: 4.5 kHz  
48 Sensor ground Idle DC Max. 50mV 35mV
49 Accelerator Position Sensor #2 signal input C.T Analog 0.3 ~ 0.9V 0.4V
W.O.T 1.5 ~ 3.0V 2.1V
50 -        
51 -        
52 Vehicle speed signal input Vehicle running PULSE High: Min. 5.0V 12.6V
Low: Max. 1.0V 0.2V
53 Sensor ground Idle DC Max. 50mV 34mV
54 Accelerator Position Sensor #1 signal input C.T Analog 0.3 ~ 0.9V 0.77V
W.O.T 4.0 ~ 4.8V 4.23V
55 Sensor ground Idle DC Max. 50mV 36mV
56 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.08V
57 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.08V
58 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.08V
59 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.08V
60 -        
61 Engine speed signal output Idle PULSE High: Battery Voltage 13.0V
Low: Max. 0.5V 0V
20~26Hz 35Hz
62 -        
63 Malfunction Indicator Lamp (MIL) control output MIL OFF DC High: Battery Voltage 4.24V
MIL ON Low: Max. 2.0V 0V
64 Air Conditioner Compressor Relay control output A/C OFF DC Battery Voltage 13.0V
A/C ON Max. 1.0V 0.14V
65 Cooling Fan Relay [Low] control output        
66 Cooling Fan Relay [High] control output        
67 -        
68 -        
69 -        
70 Fuel Pump Relay control output Relay OFF DC Battery Voltage 12.5V
Relay ON Max. 1.0V 0.09V
71 Variable Intake Solenoid Valve control output Active DC Max. 1.0V 0.1V
Inactive Battery Voltage 12.4V
72 Immobilizer lamp control output        
73 -        
74 -        
75 -        
76 -        
77 -        
78 Purge Control Solenoid Valve control output Inactive Active PULSE High: Battery Voltage 13.2V
Low: Max. 1.0V 0.08V
  16Hz
79 -        
80 -        

Connector [CLG-B] 

TERMINALS REFERENCE

Pin No. Description Condition Type Level Test Result
1 ETC Motor [-] control output Idle PULSE High: Battery Voltage 13.3V
Low: Max. 1.0V 0.3V
  3.14KHz
2 ETC Motor [+] control output Idle PULSE High: Battery Voltage 13.3V
Low: Max. 1.0V 0.4V
  3.14KHz
3 -        
4 CVVT Oil Temperature Sensor signal input Idle Analog 0.5 ~ 4.5V 1.68V
5 -        
6 -        
7 Engine Coolant Temperature Sensor signal input Idle Analog 0.5 ~ 4.5V 0.47V
8 Manifold Absolute Pressure Sensor signal input IG ON Analog 3.9 ~ 4.1V 4.01V
Idle 0.8 ~ 1.6V 1.59V
9 -        
10 -        
11 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.08V
12 Battery voltage supply after ignition switch IG OFF DC Max. 0.5V 0V
IG ON Battery Voltage 12.2V
13 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.05V
14 Sensor ground Idle DC Max. 50mV 30mV
15 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.06V
16 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.06V
17 Sensor ground Idle DC Max. 50mV 30mV
18 Sensor ground Idle DC Max. 50mV 30mV
19 Ignition Coil (Cylinder #6) control output Idle PULSE 1st: 300~400V 272V
ON: Max. 2V 1.2V
  5.8Hz
20 -        
21 Crankshaft Position Sensor [High] signal input Idle Sine Wave Vp_p: Min.1.0V 8V
  700Hz
22 -        
23 Sensor Shield Idle DC Max. 50mV 32mV
24 Camshaft Position Sensor [Bank 2] signal input Idle PULSE High: Vref 5.08V
Low: Max. 0.5V 0.06V
  40Hz
25 Camshaft Position Sensor [Bank 1] signal input Idle PULSE High: Vref 5.08V
Low: Max. 0.5V 0.06V
  40Hz
26 -        
27 -        
28 Sensor ground Idle DC Max. 50mV 27mV
29 Sensor ground Idle DC Max. 50mV 27mV
30 Sensor ground Idle DC Max. 50mV 26V
31 Sensor ground Idle DC Max. 50mV 27mV
32 Sensor power (+5V) IG OFF DC Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.06V
33 Sensor ground Idle DC Max. 50mV 13mV
34 Sensor ground Idle DC Max. 50mV 13mV
35 Power ground Idle DC Max. 50mV 0mV
36 Power ground Idle DC Max. 50mV 0mV
37 Power ground Idle DC Max. 50mV 0mV
38 Power ground Idle DC Max. 50mV 2mV
39 Power ground Idle DC Max. 50mV 2mV
40 Ignition Coil (Cylinder #4) control output Idle PULSE 1st: 300~400V 263V
ON: Max. 2V 1.4V
  5.8Hz
41 Crankshaft Position Sensor [Low] signal input Idle Sine Wave Vp_p: Min.1.0V 8V
  700Hz
42 -        
43 -        
44 -        
45 -        
46 -        
47 -        
48 Throttle Position Sensor #1 signal input C.T Analog 0.25 ~ 0.9V  
W.O.T Min. 4.0V
49 Heated Oxygen Sensor [Bank 1/Sensor 1] signal input Engine Running DC Rich: 0.6 ~ 1.0V 0.95V
Lean: 0 ~ 0.4V 0.13V
50 Heated Oxygen Sensor [Bank 1/Sensor 2] signal input Engine Running DC Rich: 0.6 ~ 1.0V 0.88V
Lean: 0 ~ 0.4V 0.21V
51 Heated Oxygen Sensor [Bank 2/Sensor 1] signal input Engine Running DC Rich: 0.6 ~ 1.0V 0.91V
Lean: 0 ~ 0.4V 0.18V
52 Heated Oxygen Sensor [Bank 2/Sensor 2] signal input Engine Running DC Rich: 0.6 ~ 1.0V 0.89V
Lean: 0 ~ 0.4V 0.22V
53 Knock Sensor (KS) #2 [High] signal input Knocking Variable Frequency -0.3 ~ 0.3 V 1.7V
Normal 0 V
54 Knock Sensor (KS) #2 [Low] signal input Knocking Variable Frequency -0.3 ~ 0.3 V 1.7V
Normal 0 V
55 Knock Sensor (KS) #1 [Low] signal input Knocking Variable Frequency -0.3 ~ 0.3 V 1.7V\
Normal 0 V
56 Knock Sensor (KS) #1 [High] signal input Knocking Variable Frequency -0.3 ~ 0.3 V 1.7V
Normal 0 V
57 Throttle Position Sensor #2 signal input C.T Analog Min. 4.0V  
W.O.T 0.25 ~ 0.9V
58 Sensor ground Idle DC Max. 50mV 17mV
59 -        
60 Ignition Coil (Cylinder #2) control output Idle PULSE 1st: 300~400V 266V
ON: Max. 2V 1.3V
  5.8Hz
61 CVVT Oil Control Valve [Bank 2] control output Idle PULSE Battery Voltage 14.5V
Max. 1.0V 0.1V
Duty variance when operating the accelerator 128Hz
62 CVVT Oil Control Valve [Bank 1] control output Idle PULSE Battery Voltage 14.3V
Max. 1.0V 0.1V
Duty variance when operating the accelerator 128Hz
63 Injector (Cylinder #2) control output Idle PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 57.5V
  5.8Hz
64 Injector (Cylinder #3) control output Idle PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 56.8V
  5.8Hz
65 -        
66 -        
67 Heated Oxygen Sensor [Bank 2/Sensor 1] Heater control output Engine Running PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.17V
  16Hz
68 Injector (Cylinder #4) control output Idle PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 56.8V
  5.8Hz
69 Injector (Cylinder #5) control output Idle PULSE High: Battery Voltage 13.7V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 56.8V
  5.8Hz
70 Heated Oxygen Sensor [Bank 1/Sensor 1] Heater control output Engine Running PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.17V
  16Hz
71 Injector (Cylinder #6) control output Idle PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 56.8V
  5.8Hz
72 Injector (Cylinder #1) control output Idle PULSE High: Battery Voltage 13.8V
Low: Max. 1.0V 0.13V
Vpeak: Max. 80V 56.8V
  5.8Hz
73 Heated Oxygen Sensor [Bank 2/Sensor 2] Heater control output Engine Running PULSE High: Battery Voltage 13.9V
Low: Max. 1.0V 0.19V
  16Hz
74 Heated Oxygen Sensor [Bank 1/Sensor 2] Heater control output Engine Running PULSE High: Battery Voltage 13.9V
Low: Max. 1.0V 0.18V
  16Hz
75 -        
76 Power Supply (B+) Always DC Battery Voltage 13.0V
77 Ignition Coil (Cylinder #3) control output Idle PULSE 1st: 300~400V 266V
ON: Max. 2V 1.4V
  5.8Hz
78 Ignition Coil (Cylinder #5) control output Idle PULSE 1st: 300~400V 267V
ON: Max. 2V 1.4V
  5.8Hz
79 Ignition Coil (Cylinder #1) control output Idle PULSE 1st: 300~400V 268V
ON: Max. 2V 1.4V
  5.8Hz
80 -