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Home >> Hyundai >> 2008 >> Tucson GLS, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G4GC - GSL 2.0) >> Gasoline Engine Control System >> Engine Control Module (ECM) >> ECM Terminal Input/Output Signal

ECM Terminal Input/Output Signal

ECM TERMINAL INPUT/OUTPUT SIGNAL REFERENCE CHART

Pin Description Type Vehicle State Level Test Result
1 ECM ground DC Idle Max. 50 mV  
2 Power stage ground DC Idle Max. 50 mV  
3 Direct battery voltage supply DC Always Vbatt 13.16V
4 Ignition coil output 1,4 Pulse Idle 1st Voltage: 300~400V 319.5V
ON Voltage: Max. 2V 1.25V
5 Ignition coil output 2,3 Pulse Idle 1st Voltage: 300~400V 328.0V
ON Voltage: Max. 2V 1.25V
6 CAN LOW Pulse Recessive 2.0 ~ 3.0 V 2.44V
Dominant 0.5~2.25 V 1.48V
7 CAN HIGH Pulse Recessive 2.0 ~ 3.0 V 2.41V
Dominant 2.75 ~ 4.5 V 3.36V
8 HO2S Heater (B1/S1) Pulse (10Hz) Engine Run High: Vbatt 14.18V
Low: 0 ~ 0.5V 0.25V
9 HO2S Heater (B1/S2) Pulse (10Hz) Engine Run High: Vbatt 14.125V
Low: 0 ~ 0.5V 0.25V
10 Knock Sensor Input Frequency Normal 2.0 ~ 3.0V  
Knocking Variable Frequency  
11 CVVT Oil Control Valve output Pulse Idle High: Vbatt 15.44V
Low: 0 ~ 0.5 V 0.188V
12 Not connected        
13 Not connected        
14 Battery Voltage Supply after Main Relay DC IG OFF Max. 1.0 V 0V
IG ON Vbatt 12.6V
15 Not connected        
16 Not connected        
17 Wheel Speed Sensor (-) Sensor Signal Vehicle Run  
  • 50 RPM: 37 Hz, 236 mV (Peak to peak)
  • 100 RPM: 76 Hz, 376 mV (Peak to peak)
  • 1,000 RPM: 769 Hz, 1.64 V (Peak to peak)
18 Wheel Speed Sensor (+) Sensor Signal Vehicle Run  
19 Not connected        
20 Not connected        
21 Battery Voltage Supply after Main Relay DC IG OFF Max. 1.0V 0V
IG ON Vbatt 12.6V
22 Battery Voltage Supply after Ignition Key DC IG OFF Max. 0.5V 0V
IG ON Vbatt 14.2V
23 Injector output (cyl. 4) Pulse Idle High: Vbatt 14.13V
Low: Max. 1.0V 0.375V
  Vpeak: 53.2V
  Freq.: 5.83Hz
24 Injector output (cyl. 1) Pulse Idle High: Vbatt 14.06V
Low: Max. 1.0V 0.375
  Vpeak: 53.4V
  Freq.: 5.82Hz
25 Spare Sensor supply DC IG OFF Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.04V
26 Purge Control Solenoid Valve (PCSV) PWM output PWM (20Hz) Inactive Active High: Vbatt 14.06V
Low: Max. 0.5V 0.0625V
27 Crankshaft Position Sensor ground DC Idle Max. 50 mV 20.52 mV
28 Not connected        
29 Crankshaft Position Sensor input Pulse Engine Run High: Vcc or Vbatt 5.04V
Low: Max. 0.5V 0.163V
30 Camshaft Position Sensor ground DC Idle Max. 0.5V 21.122 mV
31 Engine Coolant Temperature Sensor input DC Engine Run 0.5 ~ 4.5V 1.125V at 90 °C
32 Throttle Position Sensor input DC C.T 0.2 ~ 0.9V 0.288V
W.O.T 4.0 ~ 5.0V 4.23V
33 Fuel Tank Pressure Sensor signal input Analog Idle 0~Vcc 2.46V
34 Fuel Tank Pressure Sensor ground DC Idle Max. 0.5V 19.48 mV
35 Not connected        
36 Not connected        
37 HO2S (B1/S2) ground DC Idle Max. 50 mV 20.2 mV
38 Throttle Position Sensor ground DC Idle Max. 50 mV 20.1 mV
39 Vehicle Speed signal input Pulse Vehicle Run High: Min. 5.0V 4.66V
Low: Max. 1.0V 0.975V
40 Not connected        
41 Not connected        
42 HO2S (B1/S2) input Analog Engine Run RICH: 0.6 ~ 1.0V 0.755V
LEAN: 0 ~ 0.4V 0.136V
43 HO2S (B1/S1) input Analog Engine Run RICH: 0.6 ~ 1.0V 0.70V24V
LEAN: 0 ~ 0.4V 0.105V
44 Fuel Tank Pressure Sensor supply DC IG OFF Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.05V
45 Throttle Position Sensor supply DC IG OFF Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.05V
46 Spare Sensor supply 2 DC IG OFF Max. 0.5V 0V
IG ON 4.9 ~ 5.1V 5.05V
47 Immobilizer Data Line        
48 MAFS, IATS ground DC Idle Max. 50 mV 24.4 mV
49 Not connected        
50 Air Conditioner Compressor Switch input DC S/W OFF Max. 0.5V 12.56V
S/W ON Vbatt 0V
51 Air Conditioner Pressure Switch input DC S/W OFF Max. 0.5V 12.56V
S/W ON Vbatt 0V
52 Oil Temperature Sensor input Analog Idle 0.5 ~ 4.5V 0.937V at 94 °C
53 Not connected        
54 Knock Sensor ground DC Idle Max. 50 mV 21.55 mV
55 Ignition shield ground DC Idle Max. 50 mV 21.36 mV
56 Intake Air Temperature Sensor input Analog Engine Run 0 ~ 5.0V 1.86V at 42 °C
57 Not connected        
58 Air Conditioner Request Switch input DC S/W OFF Max. 1.0V 0V
S/W ON Vbatt 12.5V
59 HO2S (B1/S1) ground DC Idle Max. 50 mV 22.15 mV
60 Mass Air Flow Sensor signal input Analog Idle 0 ~ 2.0V 1.07V
3000 RPM 1.0 ~ 4.5V 1.98V
61 Injector output (cyl. 3) Pulse Idle High: Vbatt 13.8V
Low: Max. 1.0V 0.375V
  Vpeak: 53.3V
  Freq.: 5.83Hz
62 Injector output (cyl. 2) Pulse Idle High: Vbatt 13.75V
Low: Max. 1.0V 0.313V
  Vpeak: 53.2V
  Freq.: 5.82Hz
63 Not connected        
64 Cooling Fan Relay - High control output DC Relay OFF Vbatt 13.81V
Relay ON Max. 1.0V 0.188V
65 Cooling Fan Relay - Low control output DC Relay OFF Vbatt 14.19V
Relay ON Max. 1.0V 0.188V
66 Engine Speed signal output Pulse Idle High: Vbatt 12.56V
Low: Max. 0.5V 0V
Idle = 20 ~ 26Hz 23.36Hz
67 Main Relay control output DC Relay OFF Vbatt 13.0V
Relay ON Max. 1.0V 0.75V
68 Air Conditioner Compressor Relay control output DC Relay OFF Vbatt 14.0V
Relay ON Max. 1.0V 0.125V
69 Electric Fuel Pump Relay control output DC Engine Stop Vbatt 13.0V
After IG ON Max. 1.0V 0.125V
70 Malfunction Indicating Lamp (MIL) output DC Lamp OFF Vbatt 13.0V
Lamp ON Max. 1.0V 0.063V
71 Immobilizer ground Static Signal Always 0 ~ 0.5V 0.4V
72 Camshaft Position Sensor input Pulse (5.86Hz) Engine Run High: Vcc or Vbatt 5.05V
Low: Max. 0.5V 0.213V
73 Engine Coolant Temperature Sensor ground DC Idle Max. 50 mV 20.86 mV
74 Throttle Position PWM output Pulse (100Hz) Idle High: Vbatt 13.44V
Low: 0 ~ 0.5V 0.125V
75 Fuel Consumption signal output Pulse (3.33Hz) Idle High: Vbatt or Vcc 13.19V
Low: Max. 0.5V 0.188V
76 Oil Temperature Sensor ground DC Idle Max. 50 mV 22.2 mV
77 Diagnostic Data Line (k-Line) Pulse When communicating High: Min Vbatt * 70% 13.0V
Low: Max. Vbatt * 30% 0V
78 Idle Speed Control Actuator PWM output 2 (CLOSE) Pulse Idle High: Vbatt 14.81V
Low: Max. 1.0V 0.25V
79 Canister Close Valve control output DC Idle Vbatt 14.13V
Leak Test 0~1V 0.188V
80 Idle Speed Control Actuator PWM output 1 (OPEN) Pulse Idle High: Vbatt 14.63V
Low: Max. 1.0V 0.187V
81 Immobilizer Lamp output        
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