2017 Hyundai Tucson Value, FWDFACTORY OEM SERVICE PROCEDURE

ECM Terminal Input/Output Signal

Connector [C300-A] 

Pin No. Description Condition Type Level
1 Injector (Cylinder #3) [High] control output Relay ON/OFF DC voltage 71V
2 Injector (Cylinder #4) [High] control output Relay ON/OFF DC voltage 71V
3 Injector (Cylinder #2) [Low] control output Relay OFF DC voltage 71V
Relay ON Max. 1.0V
4 Electric Waste Gate Actuator (EWGA) DC Motor output (+)      
5 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] heater control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.65V
6 -      
7 -      
8 -      
9 Sensor ground Idle DC voltage -0.3 ~ 0.5V
10 -      
11 -      
12 -      
13 -      
14 -      
15 CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control output Idle Pulse High: Battery voltage
Low: Max. 1.65V
16 Injector (Cylinder #2) [High] control output Relay ON/OFF DC voltage 71V
17 Injector (Cylinder #1) [High] control output Relay ON/OFF DC voltage 71V
18 Injector (Cylinder #3) [Low] control output Relay OFF DC voltage 71V
Relay ON Max. 1.0V
19 Electric Waste Gate Actuator (EWGA) DC Motor output (-)      
20 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] heater control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.65V
21 -      
22 -      
23 Engine Coolant Temperature Sensor (ECTS) signal input Idle Analog 0.270 ~ 4.77V
24 Sensor ground Idle DC voltage Max. 50 mV
25 -      
26 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog 0.3343 ~ 0.4667V
27 Canister Close Valve (CCV) control output (Smart key type) Active DC voltage Battery voltage
Inactive Max. 1.76V
Fuel pump relay control output (NON-Smart key type) Relay OFF DC voltage Battery voltage
Relay ON Max. 1.44V
28 -      
29 -      
30 -      
31 Ignition coil (Cylinder #3) control output Idle Pulse 1st voltage: 370 ~ 430V
ON voltage: Max. 2.2V
32 Ignition coil (Cylinder #1) control output Idle Pulse 1st voltage: 370 ~ 430V
ON voltage: Max. 2.2V
33 Injector (Cylinder #1) [Low] control output Relay OFF DC voltage 71V
Relay ON Max. 1.0V
34 Fuel Pressure Control Valve (FPCV) [High] control output Relay ON/OFF DC voltage 16V
35 ETC motor [-] control output Idle Pulse High: Battery voltage
Low: Max. 1.0V
36 -      
37 Knock Sensor (KS) signal input Knocking Variable  
Normal Frequency  
38 Sensor ground Knocking Variable  
Normal Frequency  
39 -      
40 Brake Light switch signal input ON DC voltage Battery voltage
OFF Max. 2.25V
41 -      
42 -      
43 -      
44 -      
45 CVVT Oil Control Valve (OCV) [Bank 1/Intake] control output Idle Pulse High: Battery voltage
Low: Max. 1.65V
46 Ignition coil (Cylinder #4) control output Idle Pulse 1st voltage: 370 ~ 430V
ON voltage: Max. 2.2V
47 Ignition coil (Cylinder #2) control output Idle Pulse 1st voltage: 370 ~ 430V
ON voltage: Max. 2.2V
48 Injector (Cylinder #4) [Low] control output Relay OFF DC voltage 71V
Relay ON Max. 1.0V
49 Fuel Pressure Control Valve (FPCV) [Low] control output Relay OFF DC voltage 16V
Relay ON Max. 1.0V
50 ETC motor [+] control output Idle Pulse High: Battery voltage
Low: Max. 1.0V
51 -      
52 Electric Waste Gate Actuator (EWGA) Feed beck signal      
53 Brake Test switch signal input ON DC voltage Battery voltage
OFF Max. 2.25V
54 -      
55 -      
56 Electric load signal input [Defrost] ON DC voltage Battery voltage
OFF Max. 2.25V
57 Alternator COM signal output Idle Pulse High: Battery voltage
Low: Max. 0.6V
58 Engine speed signal output      
59 Cooling fan [PWM] control output A/C ON Pulse High: Battery voltage
Low: Max. 0.5V
60 -      

Connector [C300-K] 

Pin No. Description Condition Type Level
1 ECM ground Idle DC voltage Max. 50 mV
2 ECM ground Idle DC voltage Max. 50 mV
3 ECM ground Idle DC voltage Max. 50 mV
4 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
5 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
6 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
7 Battery power (B+) IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
8 Sensor ground Idle DC voltage Max. 50 mV
9 Accelerator Position Sensor (APS) 1 signal input Idle Analog 0.674 ~ 4.379V
10 Sensor ground Idle DC voltage Max. 50 mV
11 -      
12 Sensor ground Idle DC voltage Max. 50 mV
13 -      
14 Throttle Position Sensor (TPS) 1 signal input Idle Analog 0.33 ~ 4.72V
15 -      
16 -      
17 Fuel Level signal input Idle Analog 0.193 ~ 4.0V
18 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
19 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
20 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
21 -      
22 -      
23 -      
24 Alternator PWM signal output [FR] Idle Pulse High: Battery voltage
Low: Max. 1.5V
25 -      
26 -      
27 -      
28 -      
29 Ignition switch signal input IG OFF DC voltage Max. 1.0V
IG ON Battery voltage
30 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input Engine Analog Rich: 0.6 ~ 1.0V
Running Lean: Max. 0.4V
31 Accelerator Position Sensor (APS) 2 signal input Idle Analog 0.261 ~ 2.204V
32 Sensor ground Idle DC voltage Max. 50 mV
33 -      
34 -      
35 Sensor ground Idle DC voltage Max. 50 mV
36 Throttle Position Sensor (TPS) 2 signal input Idle Analog 0.55 ~ 4.37V
37 -      
38        
39 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
40 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
41 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
42 Sensor power (+5V) IG OFF DC voltage Max. 0.5V
IG ON 4.9 ~ 5.1V
43 -      
44 -      
45 A/C Pressure Transducer (APT) signal input A/C ON Analog 0.348 ~ 4.63V
46 Vehicle speed signal input Idle Pulse High: Min. 5.4V
Low: Max. 2.25V
47 -      
48 -      
49 -      
50 -      
51 -      
52 VS-/IP- (Common Ground for VS, IP) Idle DC voltage Max. 50 mV
53 Rc/Rp (Pump Cell Voltage) Idle Analog 0 ~ 5.1V
54 -      
55 Sensor ground Idle DC voltage Max. 50 mV
56 -      
57 Boost Pressure Sensor (BPS) signal input      
58 Rail Pressure Sensor (RPS) signal input Idle Analog 0.43 ~ 3.46V
59 -      
60 Start signal input ON DC voltage Battery voltage
    OFF   Max. 2V
61 LIN communication signal input      
62 CCP-CAN [Low] RECESSIVE Pulse 2.0 ~ 3.0V
DOMINANT 0.5 ~ 2.25V
63 C-CAN [Low] RECESSIVE Pulse 2.0 ~ 3.0V
DOMINANT 0.5 ~ 2.25V
64 Sensor ground Idle DC voltage Max. 50 mV
65 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input Idle Pulse High: min. 4.8V
Low: Max. 0.6V
66 -      
67 Crankshaft Position Sensor (CKPS) [B] signal input Idle Pulse Vp p: Min. 1.0V
68 -      
69 -      
70 RCV control solenoid valve control output      
71 -      
72 Purge Control Solenoid Valve (PCSV) control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.76V
73 -      
74 VS+ (NERNST Cell Voltage) Idle Analog 0 ~ 5.1V
75 Rc (Compensative Resistance) Idle Analog 0 ~ 5.1V
76 Sensor ground Idle DC voltage -
77 Sensor ground Idle DC voltage Max. 50 mV
78 Sensor ground Idle DC voltage Max. 50 mV
79 Intake Temperature Sensor (IATS) signal input Idle Analog 0.209 ~ 4.756V
80 Manifold Absolute Pressure Sensor (MAPS) signal input Idle Analog 0.6683 ~ 4.346V
81 -      
82 -      
83 Immobilizer communication line When transmitting Pulse High: Min. 8.4V (at 14V)
Low: Max. 6.44V (at 14V)
84 CCP-CAN [High] RECESSIVE Pulse 2.0 ~ 3.0V
DOMINANT 2.75 ~ 4.5V
85 C-CAN [High] RECESSIVE Pulse 2.0 ~ 3.0V
DOMINANT 2.75 ~ 4.5V
86 Sensor ground Idle DC voltage Max. 50 mV
87 Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input Idle Pulse High: min. 4.8V
Low: Max. 0.6V
88 -      
89 Crankshaft Position Sensor (CKPS) [A] signal input Idle Pulse Vp p: Min. 1.0V
90 Canister Close Valve (CCV) control output (NON-Smart key type) Active DC voltage Battery voltage
Inactive Max. 1.76V
Fuel pump relay control output (Smart key type) Relay OFF DC voltage Battery voltage
Relay ON Max. 1.44V
91 -      
92 -      
93 Main relay control output Relay OFF DC voltage Battery voltage
Relay ON Max. 1.7V
94 Start relay control output Relay OFF DC voltage Battery voltage
Relay ON Max. 2.64V
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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