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.
TCM Terminal Function
2015 Kia Optima LimitedSECTION TCM Terminal Function
WARNING: This page is about a different variant/trim than selected.
CONNECTOR [A] INFORMATION
| Pin | Description | Pin | Description |
|---|---|---|---|
| 2 | - | 33 | ON/OFF solenoid valve A (SS-A) |
| 3 | Line pressure control solenoid valve (LINE_VFS) | 34 | Ground (Power 1) |
| 4 | Engine clutch control solenoid valve (EC_VFS) | 35 | Ground (Power 2) |
| 5 | 35R clutch control solenoid valve (35R/C_VFS) | 36 | Sports mode down switch |
| 6 | Input speed sensor power | 37 | Sports mode up switch |
| 7 | Output speed sensor power | 38 | Sports mode select switch |
| 8 | Input speed sensor signal | 40 | Inhibitor switch signal "S1" |
| 9 | Output speed sensor signal | 47 | Solenoid supply power 1 |
| 17 | Underdrive brake control solenoid valve (UD/B_VFS) | 48 | Solenoid supply power 2 |
| 49 | TCM Input power 1 (For solenoid) | ||
| 18 | 26 brake control solenoid valve (26/B_VFS) | 50 | TCM Input power 2 (For solenoid) |
| 19 | Shift lock solenoid | 51 | PWM_command |
| 20 | Overdrive clutch control solenoid valve (OD/C_VFS) | 52 | Status_OPU |
| 53 | Oil temperature sensor (-) | ||
| 25 | Inhibitor switch signal "S2" | 54 | Oil temperature sensor (+) |
| 26 | Inhibitor switch signal "S3" | 55 | CAN communication line (HIGH) |
| 27 | Inhibitor switch signal "S4" | 56 | CAN communication line (Low) |
| 32 | ON/OFF solenoid valve B (SS-B) | 56 | CAN communication line (Low) |
| 33 | ON/OFF solenoid valve A (SS-A) |
CONNECTOR [B] INFORMATION
| Pin | Description | Pin | Description |
|---|---|---|---|
| 1 | Power ground | 4 | Battery power (B+) |
| 2 | Battery power (B+) | 5 | ECU ground |
| 3 | Power ground | 6 | Battery power (B+) |
RENDER: 1.0x
NO RELATED
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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.