Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Hyundai Sonata Plug-In HybridFACTORY OEM SERVICE PROCEDURE
ECM Terminal Input/Output Signal
Connector [C100-A]
| Pin No. | Description | Condition | Type | Level |
|---|---|---|---|---|
| 1 | - | |||
| 2 | - | |||
| 3 | - | |||
| 4 | - | |||
| 5 | EGR valve (motor +) | |||
| 6 | EGR valve (motor -) | |||
| 7 | - | |||
| 8 | - | |||
| 9 | - | |||
| 10 | - | |||
| 11 | - | |||
| 12 | Fuel tank pressure sensor (FTPS) signal input | |||
| 13 | ECU Wake Up signal input | |||
| 14 | - | |||
| 15 | EGR valve (Feedback signal) | |||
| 16 | - | |||
| 17 | Engine Coolant Temperature Sensor (ECTS) signal input | Idle | Analog | 0.5 ~ 4.5V (Idle: 1.02V) |
| 18 | - | |||
| 19 | - | |||
| 20 | Ignition Coil (Cylinder #3) control output | Engine Run | Pulse | Vpeak = 360 ~ 440V 125 (Idle: 333Hz) |
| 21 | Ignition Coil (Cylinder #2) control output | Engine Run | Pulse | Vpeak = 360 ~ 440V 125 (Idle: 333Hz) |
| 22 | - | |||
| 23 | - | |||
| 24 | - | |||
| 25 | - | |||
| 26 | PWM_Command | - | PWM output | 0V/Battery Voltage Level 9V |
| 27 | - | |||
| 28 | - | |||
| 29 | - | |||
| 30 | - | |||
| 31 | - | |||
| 32 | Mass Air Flow Sensor (MAFS) signal input | Idle | Analog | 0.8 ~ 1.6V (Idle: 1.37V) |
| 33 | - | |||
| 34 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 35 | - | |||
| 36 | EGR valve (Ground) | - | - | - |
| 37 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 38 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 39 | Rail Pressure Sensor (RPS) signal input | Idle | Analog | -0.3 ~ 5.2V |
| 40 | - | |||
| 41 | Ignition Coil (Cylinder #1) control output | Engine Run | Pulse | Vpeak = 360 ~ 440V 125 (Idle: 333Hz) |
| 42 | Ignition Coil (Cylinder #4) control output | Engine Run | Pulse | Vpeak = 360 ~ 440V 125 (Idle: 333Hz) |
| 43 | - | |||
| 44 | - | |||
| 45 | - | |||
| 46 | - | |||
| 47 | - | |||
| 48 | - | |||
| 49 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 50 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 51 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 52 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 53 | - | |||
| 54 | - | |||
| 55 | - | |||
| 56 | - | |||
| 57 | - | |||
| 58 | - | |||
| 59 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 60 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 61 | Sensor shield | Idle | DC | -0.3 ~ 0.5V |
| 62 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 63 | Knock Sensor (KS) signal input | Knocking Normal | Variable Frequency | -0.3 ~ 0.3V 0V |
| 64 | - | |||
| 65 | - | |||
| 66 | - | |||
| 67 | - | |||
| 68 | - | |||
| 69 | ||||
| 70 | OPCU Condition | - | Input | 0V/Battery Voltage Level |
| 9V< Battery Voltage Level< 16V | ||||
| 71 | - | |||
| 72 | - | |||
| 73 | - | |||
| 74 | Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input | Engine Run | Pulse | High: 4.5 ~ 5.5V |
| Low: -0.3 ~ 0.5V | ||||
| Frequency: 7Hz (Idle), 25Hz (3, 000 RPM) | ||||
| 75 | - | |||
| 76 | - | |||
| 77 | - | |||
| 78 | - | |||
| 79 | - | |||
| 80 | Throttle Position Sensor (TPS) 2 signal input | C.T | Analog | 4.2 ~ 5.0V |
| W.O.T | 3.3 ~ 3.8V | |||
| 81 | Intake Air Temperature Sensor (IATS) signal input | Idle | Analog | 0 ~ 5.0V (-other Language 2.55V) |
| 82 | Manifold Absolute Pressure Sensor (MAPS) signal input | Idle | Analog | 0.8 ~ 1.6V (-other Language 1.37V) |
| 83 | Rc/Rp (Pump Cell Voltage) | Idle | Analog | Normal: 450±50 mV |
| Rich: Max. Normal+150 mV | ||||
| Lean: Min. Normal-150 mV | ||||
| 84 | VS-/IP- (Common Ground for VS, IP) | Idle | Analog | Reference for V_IP, V_N |
| 85 | - | |||
| 86 | - | |||
| 87 | - | |||
| 88 | - | |||
| 89 | ETC Motor [+] control output | Engine Run | Pulse | High: Battery Voltage (B+) |
| Low: Max1.0V | ||||
| 90 | ETC Motor [-] control output | Engine Run | Pulse | High: Battery Voltage (B+) |
| Low: Max1.0V | ||||
| 91 | - | |||
| 92 | - | |||
| 93 | - | |||
| 94 | - | |||
| 95 | Crankshaft Position Sensor (CKPS) signal input | Engine Run | Pulse | High: 4.5 ~ 5.5V |
| Low: -0.3 ~ 0.5V | ||||
| Frequency: 850Hz (Idle), 3, 000Hz (3, 000 RPM) | ||||
| 96 | Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input | Engine Run | Pulse | High: 4.5 ~ 5.5V |
| Low: -0.3 ~ 0.5V | ||||
| Frequency: 7Hz (Idle), 25Hz (3, 000 RPM) | ||||
| 97 | - | |||
| 98 | - | |||
| 99 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 100 | Throttle Position Sensor (TPS) 1 signal input | C.T | Analog | 0.3 ~ 0.9V |
| W.O.T | 1.5 ~ 3.0V | |||
| 101 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 102 | Sensor Ground | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 103 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 104 | Rc (Compensative Resistance) | Idle | Analog | |Rc-Rc/Rp| <±0.1V |
| 105 | VS + (NERNST Cell Voltage) | Idle | Analog | Normal: 450±50 mV |
| Rich: Max. Normal+150 mV | ||||
| Lean: Min. Normal-150 mV |
Connector [C100-B]
| Pin No. | Description | Condition | Type | Level |
|---|---|---|---|---|
| 1 | ECM ground | Idle | DC | -0.3 ~ 0.5V |
| 2 | ECM ground | Idle | DC | -0.3 ~ 0.5V |
| 3 | Battery power (B+) | IG OFF | DC | Max 1.0V |
| IG ON | Battery Voltage (B+) | |||
| 4 | ECM ground | Idle | DC | -0.3 ~ 0.5V |
| 5 | Battery power (B+) | IG OFF | DC | Max 1.0V |
| IG ON | Battery Voltage (B+) | |||
| 6 | Battery power (B+) | IG OFF | DC | Max 1.0V |
| IG ON | Battery Voltage (B+) | |||
| 7 | - | |||
| 8 | Flexray communication [high] signal input | - | - | - |
| 9 | - | |||
| 10 | Brake Switch [test] signal input | Brake OFF | DC | Battery Voltage (B+) |
| Brake ON | Max 0.5V | |||
| 11 | - | |||
| 12 | - | |||
| 13 | Electrical load signal input | Lamp OFF | DC | Battery Voltage (B+) |
| Lamp ON | -0.3 ~ 0.5V | |||
| 14 | Immobilizer communication line | - | - | - |
| 15 | - | |||
| 16 | Main Relay control output | Relay OFF | DC | Battery Voltage (B+) |
| Relay ON | -0.3 ~ 1.2V | |||
| 17 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 18 | - | |||
| 19 | - | |||
| 20 | CVVT Oil Control (OCV) Valve [Bank 1/Intake] control output | Idle | Pulse | High: Battery Voltage (B+) |
| Low: -0.3 ~ 1.0V | ||||
| Frequency: 300Hz | ||||
| 21 | Ground | Idle | DC | -0.3 ~ 0.5V |
| 22 | Injector (Cylinder #2) [high] control output | Engine Run | PWM | |
| 23 | Injector (Cylinder #2) [low] control output | Engine Run | Pulse | |
| 24 | - | |||
| 25 | Flexray communication [low] signal input | |||
| 26 | - | |||
| 27 | Brake Switch [lamp] signal input | Brake OFF | DC | Max 0.5V |
| Brake ON | Battery Voltage (B+) | |||
| 28 | - | |||
| 29 | - | |||
| 30 | A/C Pressure Transducer (APT) signal input | |||
| 31 | Evaporation Position Sensor signal input | |||
| 32 | LIN communication signal input | |||
| 33 | Fuel Pump Relay control output | Relay OFF | DC | Battery Voltage (B+) |
| Relay ON | -0.3 ~ 1.2V | |||
| 34 | - | |||
| 35 | Cooling Fan PWM control output | IG OFF | PWM | Battery Voltage (B+) |
| IG ON | -0.3 ~ 1.2V | |||
| 36 | - | |||
| 37 | - | |||
| 38 | - | |||
| 39 | Injector (Cylinder #3) [high] control output | Engine Run | PWM | |
| 40 | Injector (Cylinder #3) [low] control output | Engine Run | Pulse | |
| 41 | Battery power (B+) | IG OFF | DC | Max 1.0V |
| IG ON | Battery Voltage (B+) | |||
| 42 | - | |||
| 43 | - | |||
| 44 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 45 | - | - | - | - |
| 46 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 47 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 48 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 49 | - | |||
| 50 | Sensor ground | Idle | DC | -0.3 ~ 0.5V |
| 51 | - | |||
| 52 | - | |||
| 53 | - | |||
| 54 | Vehicle speed signal output | Engine Run | Frequency | Battery Voltage (B+) |
| Low: -0.3 ~ 1.0V | ||||
| Frequency: 21Hz (Idle), 100Hz (3, 000 RPM) | ||||
| 55 | - | |||
| 56 | Injector (Cylinder #4) [high] control output | Engine Run | PWM | |
| 57 | Injector (Cylinder #4) [low] control output | Engine Run | Pulse | |
| 58 | Heated Oxygen Sensor [Bank 1/Sensor 2] signal input | Idle | DC | Rich: 0.6 ~ 1.0V |
| Lean: Max 0.4V | ||||
| 59 | H-CAN [low] | Recessive | Pulse | 2.0 ~ 3.0V |
| Dominant | 2.75 ~ 4.5V | |||
| 60 | C-CAN [high] | Recessive | Pulse | 2.0 ~ 3.0V |
| Dominant | 2.75 ~ 4.5V | |||
| 61 | - | |||
| 62 | - | |||
| 63 | - | |||
| 64 | Accelerator Position Sensor (APS) 2 signal input | C.T | Analog | Max 1.0V |
| W.O.T | 1.5 ~ 3.0V | |||
| 65 | Accelerator Position Sensor (APS) 1 signal input | C.T | Analog | Max 1.0V |
| W.O.T | Minimum 4.0V | |||
| 66 | - | |||
| 67 | - | |||
| 68 | - | |||
| 69 | Electric Water Pump (Stand-by) | - | - | - |
| 70 | - | |||
| 71 | Purge Control Solenoid Valve (PCSV) control output | Inactive Active | Pulse | High: Battery Voltage (B+) |
| Low: Max 1.0V | ||||
| Vpeak: 42.0 ~ 60.0V | ||||
| Frequency: 20Hz | ||||
| 72 | - | |||
| 73 | Injector (Cylinder #1) [high] control output | Engine Run | PWM | |
| 74 | Injector (Cylinder #1) [low] control output | Engine Run | Pulse | |
| 75 | Battery power (B+) | IG OFF | DC | Max 1.0V |
| IG ON | Battery Voltage (B+) | |||
| 76 | H-CAN [high] | Recessive | Pulse | 2.0 ~ 3.0V |
| Dominant | 2.75 ~ 4.5V | |||
| 77 | C-CAN [low] | Recessive | Pulse | 2.0 ~ 3.0V |
| Dominant | 2.75 ~ 4.5V | |||
| 78 | Vehicle speed signal input | - | - | - |
| 79 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 80 | - | |||
| 81 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 82 | Sensor power (+5V) | IG OFF | DC | Max 0.5V |
| IG ON | 4.75 ~ 5.25V | |||
| 83 | - | |||
| 84 | Fuel Tank Level Sender | - | - | - |
| 85 | Fuel Tank Isolation Valve (FTIV) relay control | |||
| 86 | CVVT Oil Control (OCV) Valve [Bank 1/Exhaust] control output | Idle | Pulse | High: Battery Voltage (B+) |
| Low: -0.3 ~ 1.0V | ||||
| Frequency: 300Hz | ||||
| 87 | - | - | - | - |
| 88 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater control output | Engine Run | Pulse | High: Battery Voltage (B+) |
| Low: -0.3 ~ 1.0V | ||||
| Frequency: 8 ~ 10Hz | ||||
| Duty: 0 ~ 100% | ||||
| 89 | Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater control output | Engine Run | Pulse | High: Battery Voltage (B+) |
| Low: -0.3 ~ 1.0V | ||||
| Frequency: 8 ~ 10Hz | ||||
| Duty: 0 ~ 100% | ||||
| 90 | Fuel Pressure Control Valve [high] Control | Engine Run | PWM | |
| 91 | Fuel Pressure Control Valve [low] Control | Engine Run | PWM |
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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