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.
2012 Kia Optima SXFACTORY OEM SERVICE PROCEDURE
Connector Pin Information
WARNING: This page is about a different car, the 2013 Kia Sportage and 2012 Kia Sportage. However, it is still accessible from the selected car via links, so may be relevant.
CONNECTOR PIN INFORMATION CHART
| No | Connector A (14 Pin) | No | Connector B (26 Pin) | ||
|---|---|---|---|---|---|
| 1 | Ground 1 | 1 | - | 15 | L_Passenger lock button, L_Passenger toggle button |
| 2 | A_ACC | 2 | L_Driver lock button, L_Driver toggle button | 16 | - |
| 3 | A_IGN2 | 3 | - | 17 | - |
| 4 | A_IGN1 | 4 | - | 18 | - |
| 5 | VBAT_CPU | 5 | - | 19 | L_Fob input |
| 6 | VBAT_LOAD | 6 | L_SSB_Switch1 | 20 | F_RPM |
| 7 | Ground 2 | 7 | F_Wheel vehicle | 21 | L_Start Feedback |
| 8 | - | 8 | L_SSB_Switch2 | 22 | - |
| 9 | O_Exterior buzzer | 9 | - | 23 | - |
| 10 | O_ACC Relay | 10 | - | 24 | - |
| 11 | O_IGN1 Relay | 11 | - | 25 | - |
| 12 | O_IGN2 Relay | 12 | B_CAN_H | 26 | L_Tailgate Switch |
| 13 | O_Starter Relay | 13 | B_CAN_L | ||
| 14 | - | 14 | - | ||
CONNECTOR PIN INFORMATION CHART
| No | Connector C (16 Pin) | No | Connector D (22 Pin) |
|---|---|---|---|
| 1 | C_CAN_L | 1 | Immobilizer warning lamp |
| 2 | C_CAN_H | 2 | O_SSB_LED_AMBER |
| 3 | - | 3 | O_SSB_illumination power |
| 4 | O_Holder illumination | 4 | O_Interior antenna 2 ground |
| 5 | - | 5 | O_Interior antenna 1 ground |
| 6 | Diagnostic K | 6 | - |
| 7 | L_Brake switch | 7 | - |
| 8 | Immobilizer data | 8 | O_Interior antenna 3 power |
| 9 | RF_COM | 9 | O_Bumper antenna power |
| 10 | EMS_COM | 10 | O_Passenger side antenna power |
| 11 | - | 11 | O_Driver side antenna power |
| 12 | - | 12 | - |
| 13 | L_Stop lamp fuse | 13 | O_SSB_LED_Blue |
| 14 | - | 14 | O_SSB_illumination ground |
| 15 | L_P shift, L_Clutch switch | 15 | O_Interior antenna 2 power |
| 16 | Immobilizer clock | 16 | O_Interior antenna 1 power |
| 17 | - | ||
| 18 | - | ||
| 19 | O_Interior antenna 3 ground | ||
| 20 | O_Bumper antenna ground | ||
| 21 | O_Passenger side antenna ground | ||
| 22 | O_Driver side antenna ground |
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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