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 Optima EXFACTORY OEM SERVICE PROCEDURE
Components & Components Location: Components
WARNING: This page is about a different variant/trim than selected.
CONNECTOR PIN INFORMATION
| No. | Connector A | Connector B | Connector C |
|---|---|---|---|
| 1 | - | Power 2_GND | ESCL Enable_output |
| 2 | "P" signal input | WPC Mute_output | SSB LED (IGN) |
| 3 | Brake switch_input | ESCL (-)_output | SSB LED (ACC) |
| 4 | Start signal feedback_input | - | - |
| 5 | - | Battery (+)_signal | Passenger door antenna_GND |
| 6 | - | Power 1_GND | Driver side door antenna_GND |
| 7 | - | - | Rear antenna_GND |
| 8 | - | ESCL (+)_output | Bumper antenna_GND |
| 9 | - | - | Interior antenna 2_GND |
| 10 | - | Battery (+)_power | Interior antenna 1_GND |
| 11 | - | Immobilizer antenna_GND | |
| 12 | ESCL Unlock switch_input | - | |
| 13 | Wheel speed sensor_input | Exterior buzzer | |
| 14 | - | IGN1 relay_output | |
| 15 | RPM_Input | IGN2 relay_output | |
| 16 | IGN1 | ACC relay_output | |
| 17 | ACC signal_input | Passenger door antenna_Power | |
| 18 | IGN2 | Driver side door antenna_Power | |
| 19 | B-CAN (Low) | Rear antenna_Power | |
| 20 | B-CAN (High) | Bumper antenna_Power | |
| 21 | C-CAN (High) | Interior antenna 2_Power | |
| 22 | C-CAN (Low) | Interior antenna 1_Power | |
| 23 | SSB switch2 signal_input | Immobilizer antenna_Power | |
| 24 | Passenger door switch signal_input | - | |
| 25 | Driver side door switch signal_input | ||
| 26 | SSB switch1 signal_input | ||
| 27 | - | ||
| 28 | EMS communication | ||
| 29 | ESCL communication | ||
| 30 | Starter relay_output | ||
| 31 | SSB Illumination (+) | ||
| 32 | SSB Illumination (-) |
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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