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 Forte GT LineFACTORY OEM SERVICE PROCEDURE
TCM Terminal Function
| Connector [A] | Connector [B] | ||
|---|---|---|---|
| Pin | Description | Pin | Description |
| A1 | Drive pulley control solenoid valve (Primary_VFS) | B9 | Manual mode down shift |
| A5 | Damper clutch control solenoid valve (Damper/C_VFS) | B10 | Manual mode up shift |
| A6 | Line pressure control solenoid valve (Line_VFS) | B30 | Select switch |
| A8 | Inhibitor switch (S2) | B60 | P-CAN (High) |
| A22 | Drive/reverse clutch control solenoid valve (Clutch/Brake_VFS) | B77 | P-CAN (Low) |
| A26 | Driven pulley control solenoid valve (Secondary_VFS) | ||
| A27 | Inhibitor switch (S1) | ||
| A28 | Drive (Primary) pressures sensor 2 | ||
| A43 | Solenoid valve 1 (Power) | ||
| A44 | Solenoid valve 2 (Power) | ||
| A45 | Ground | ||
| A46 | Ground | ||
| A49 | Oil temperature (+) | ||
| A51 | Driven (Secondary) pressures sensor supply | ||
| A64 | Memory power 1 | ||
| A65 | Driven (Secondary) speed sensor signal 3 | ||
| A66 | Driven (Secondary) pressures sensor signal 1 | ||
| A70 | Inhibitor switch (Ground) | ||
| A72 | Turbine speed sensor signal 2 | ||
| A73 | Drive (Primary) speed sensor power 1 | ||
| A85 | Memory power 2 | ||
| A86 | Driven (Secondary) speed sensor supply 2 | ||
| A87 | Driven (Secondary) pressures sensor power 1/2 | ||
| A91 | Oil temperature (-) | ||
| A92 | Drive (Primary) speed sensor signal 1 | ||
| A93 | Inhibitor switch (Supply) | ||
| A94 | Turbine speed sensor power 3 | ||
Factory Service Tools
Use the Manual With the Right Hardware
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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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