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.
2019 Kia Niro EXFACTORY OEM SERVICE PROCEDURE
Connector [A]
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | Injector (Cylinder #3) [Low] control | Injector (Cylinder #3) |
| 2 | Injector (Cylinder #4) [High] control | Injector (Cylinder #4) |
| 3 | Injector (Cylinder #4) [Low] control | Injector (Cylinder #4) |
| 4 | Engine speed signal output | Smart Key Control Module [Smart key type]/Immobilizer Module [Immobilizer type] |
| 5 | EGR Valve (Motor-) | Electric Exhaust Gas Recirculation (EGR) Valve |
| 6 | Sensor power (+5V) | Throttle Position Sensor (TPS) 1, 2 |
| 7 | Sensor power (+5V) | Electric Exhaust Gas Recirculation (EGR) Valve |
| 8 | Knock Sensor (KS) signal input | Knock Sensor (KS) |
| 9 | Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input | Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] |
| 10 | - | |
| 11 | Brake switch [Test] signal input | Brake switch |
| 12 | Brake switch [Lamp] signal input | Brake switch |
| 13 | - | |
| 14 | - | |
| 15 | - | |
| 16 | Injector (Cylinder #3) [High] control | Injector (Cylinder #3) |
| 17 | Injector (Cylinder #1) [High] control | Injector (Cylinder #1) |
| 18 | Injector (Cylinder #1) [Low] control | Injector (Cylinder #1) |
| 19 | - | |
| 20 | EGR Valve (Motor +) | Electric Exhaust Gas Recirculation (EGR) Valve |
| 21 | Sensor shield | Knock Sensor (KS) |
| 22 | Sensor ground (-) | Knock Sensor (KS) |
| 23 | - | |
| 24 | Sensor ground | Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] |
| 25 | - | |
| 26 | - | |
| 27 | - | |
| 28 | - | |
| 29 | - | |
| 30 | - | |
| 31 | Injector (Cylinder #2) [High] control | Injector (Cylinder #2) |
| 32 | - | |
| 33 | ETC Motor [-] control | ETC Motor |
| 34 | Sensor ground | Throttle Position Sensor (TPS) 1, 2 |
| 35 | Throttle Position Sensor (TPS) 1 signal input | Throttle Position Sensor (TPS) 1 |
| 36 | Sensor ground | Rail Pressure Sensor (RPS) |
| 37 | Rail Pressure Sensor (RPS) signal input | Rail Pressure Sensor (RPS) |
| 38 | - | |
| 39 | Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input | Camshaft Position Sensor (CMPS) [Bank 1/Intake] |
| 40 | - | |
| 41 | - | |
| 42 | - | |
| 43 | VS-/IP-(Virtual Ground) | Heated Oxygen Sensor [Bank 1/Sensor 1] |
| 44 | Rc (Compensative Resistance) | Heated Oxygen Sensor [Bank 1/Sensor 1] |
| 45 | Sensor ground | Heated Oxygen Sensor [Bank 1/Sensor 2] |
| 46 | Injector (Cylinder #2) [Low] control | Injector (Cylinder #2) |
| 47 | - | |
| 48 | ETC Motor [+] control | ETC Motor |
| 49 | - | |
| 50 | Throttle Position Sensor (TPS) 2 signal input | Throttle Position Sensor (TPS) 2 |
| 51 | Sensor power (+5V) | Rail Pressure Sensor (RPS) |
| 52 | Electric load signal input | Wiper Motor |
| 53 | Sensor ground | Camshaft Position Sensor (CMPS) [Bank 1/Intake] |
| 54 | Sensor ground | Electric Exhaust Gas Recirculation (EGR) Valve |
| 55 | EGR Valve (Feedback signal) | Electric Exhaust Gas Recirculation (EGR) Valve |
| 56 | - | |
| 57 | - | |
| 58 | VS+(NERNST cell voltage) | Heated Oxygen Sensor [Bank 1/Sensor 1] |
| 59 | Rc/Rp (Pumping cell voltage) | Heated Oxygen Sensor [Bank 1/Sensor 1] |
| 60 | Heated Oxygen Sensor [Bank 1/Sensor 2] signal input | Heated Oxygen Sensor [Bank 1/Sensor 2] |
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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