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 B
WARNING: This page is about a different variant/trim than selected.
| No | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| B1 | CAN High | Engine switch on(ACC) | Approx. 5V level Communication |
| B2 | - | ||
| B3 | - | ||
| B4 | Steering Wheel Remote Control | Steering Wheel switch pushed | 0.5V ~ 3V |
| B5 | - | ||
| B6 | - | ||
| B7 | AUX Video Signal | External Auxiliary device is Video Playing (At time of Aux jack use) | 1 Vpp Video Signal Input |
| B8 | AUX Right Sound Signal | External Auxiliary device is Audio playing (At time of Aux jack use) | A waveform synchronized with sound is output |
| B9 | AUX Reference Ground | Always | Below 1 ohm |
| B10 | MIC+ | Input the Voice Signal via MIC | A waveform synchronized with Voice data via MIC |
| B11 | Accessory | Engine switch on(ACC) | 11 ~ 14 V |
| B12 | Battery | Always | 11 ~ 14 V |
| B13 | CAN Low | Engine switch on(ACC) | 5V level Communication |
| B14 | Auto Light | Auto Light Sensor is detected | 3.3V(High) → 0V(Low) |
| B15 | Parking Positon | Engine switch on(IGN), Shift tansmission is Parking Position | 0V(Low) → 14V(High) |
| B16 | Speed Sensor Signal | Engine switch on(IGN), car is moved slowly | Approx. 5V Level Pulse Generation |
| B17 | Steering Wheel Remote Control Gnd | Always | Below 1 ohm |
| B18 | - | ||
| B19 | AUX Video Signal Ground | Always | Below 1 ohm |
| B20 | AUX Signal Input Detect | Auxiliary device is inserted | 0V(Low) → 5V(High) |
| B21 | AUX Left Sound Signal | External Auxiliary device is Audio playing (At time of Aux jack use) | A waveform synchronized with sound is output |
| B22 | MIC- | Input the Voice Signal via MIC | A waveform synchronized with Voice data via MIC |
| B23 | Ground | Always | Below 1 ohm |
| B24 | Ground | Always | Below 1 ohm |
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.