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.
2020 Kia Optima EXFACTORY OEM SERVICE PROCEDURE
Components (1)
WARNING: This page is about a different car, the 2020 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
| No | Connector A | Connector B | Connector C |
|---|---|---|---|
| 1 | BAT (+)_Signal | IGN 2_Relay output | Immobilizer Antenna_Power |
| 2 | BAT (+)_Power | IGN 1_Relay output | Wheel speed sensor |
| 3 | Interior antenna 1 GND_output | - | SSB Switch 1 |
| 4 | Bumper antenna GND_output | - | - |
| 5 | Interior antenna 2 GND_output | ESCL CAN | ESCL Unlock switch |
| 6 | Assist door antenna GND_output | EMS CAN | "P" position switch |
| 7 | Trunk antenna GND_output | B-CAN (High) | Brake switch |
| 8 | Driver's door antenna GND_output | B-CAN (Low) | IG2 |
| 9 | - | C-CAN (Low) | IG1 |
| 10 | SSB Illumination (+) | C-CAN (High) | Starter relay |
| 11 | Exterior buzzer | - | Immobilizer antenna_GND |
| 12 | ESCL (+) | ACC_Relay output | RPM signal |
| 13 | - | - | SSB Switch 2 |
| 14 | Interior antenna 1 power_output | GND | Driver's toggle button switch_signal |
| 15 | Bumper antenna power_output | - | Passenger toggle button switch_signal |
| 16 | Interior antenna 2 power_output | SSB LED (ACC) | Starter relay feedback signal |
| 17 | Trunk antenna power_output | SSB LED (IGN) | - |
| 18 | Assist door antenna power_output | - | ACC signal |
| 19 | Assist door antenna power_output | - | - |
| 20 | - | SSB Illumination (-) | GND power |
| 21 | ESCL Enable signal | - | |
| 22 | ESCL Enable GND | WCM |
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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