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.
2021 Kia Rio LXFACTORY OEM SERVICE PROCEDURE
TCM Terminal Function
| Connector [A] | Connector [B] | ||
|---|---|---|---|
| Pin | Function | Pin | Function |
| A5 | Driven (Secondary) speed sensor signal | B1 | Ground |
| A6 | Turbine speed sensor signal | B2 | Ground |
| A24 | Line pressure control solenoid valve (Line_VFS) | B3 | Battery power |
| A26 | Drive (Primary) speed sensor signal | B4 | Ground |
| A27 | Oil temperature (+) | B26 | IGN. |
| A29 | Position sensor (Ground) | B45 | CAN (Low) |
| A32 | Pressures sensor (Signal) | B60 | Battery |
| A43 | Drive/reverse clutch control solenoid valve (Clutch/Brake_VFS) | B62 | CAN (High) |
| A44 | Damper clutch control solenoid valve (Damper/C_VFS) | ||
| A45 | Drive pulley control solenoid valve (Primary_VFS) | ||
| A46 | Turbine speed sensor (Power) | ||
| A47 | Position sensor (Power) | ||
| A48 | Position sensor (S1) | ||
| A49 | Oil temperature (-) | ||
| A55 | Manual mode down switch | ||
| A57 | Manual mode up switch | ||
| A65 | Driven pulley control solenoid valve (Secondary_VFS) | ||
| A68 | Pressures sensor (Power) | ||
| A69 | Driven (Secondary) speed sensor supply (Power) | ||
| A74 | Driven (Secondary) pressures sensor signal | ||
| A76 | Drive (Primary) speed sensor supply(Power) | ||
| A85 | Solenoid valve 1 (Power) | ||
| A86 | Solenoid valve 2 (Power) | ||
| A93 | Position sensor (S2) | ||
| A98 | Manual mode select switch | ||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.