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.
2014 Hyundai Veloster Turbo, Automatic TransFACTORY OEM SERVICE PROCEDURE
TCM Terminal input/output signal
PIN DESCRIPTION - CONNECTOR (A)
| Pin | Description | Condition | Input/output value | |
|---|---|---|---|---|
| Type | Level | |||
| 22 | Overdrive clutch control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| 23 | Line pressure control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| 26 | SS-B solenoid valve (ON/OFF) | High | Output | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 37 | Sports mode up switch | Up ON | Input | 0V/Battery voltage level |
| Other | 9V < Battery voltage level < 16V | |||
| 38 | Sports mode select switch | Sport mode | Input | 0V/Battery voltage level |
| Other | 9V < Battery voltage level < 16V | |||
| 39 | Oil temperature sensor (+) | ON | Input | 0V/3.3V |
| OFF | ||||
| 43 | Underdrive brake control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| Power supply: V_SOL2 | ||||
| 44 | 35R clutch control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| 45 | Torque converter control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| 46 | 26 brake control solenoid valve | - | Output | 0V/Battery voltage level |
| 9V < Battery voltage level < 16V | ||||
| Power supply: V_SOL2 | ||||
| 58 | Sports mode down switch | Down ON | Input | 0V/Battery voltage level |
| Other | 9V < Battery voltage level < 16V | |||
| 59 | Oil temperature sensor (-) | - | Ground | 0V |
| 73 | Inhibitor switch signal "S4" | High | Input | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 74 | Inhibitor switch signal "S2" | High | Input | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 75 | Inhibitor switch signal "S3" | High | Input | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 89 | SS-A solenoid valve A (ON/OFF) | High | Output | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 94 | Inhibitor switch signal "S1" | High | Input | 0V/Battery voltage level |
| Low | 9V < Battery voltage level < 16V | |||
| 95 | Output speed sensor power | ON | Power | 0V/7.5V |
| OFF | ||||
| 96 | Input speed sensor power | ON | Power | 0V/7.5V |
| OFF | ||||
| 99 | Input speed sensor signal | High | Input | 0.7V/1.4V |
| Low | ||||
| 100 | Output speed sensor signal | High | Input | 0.7V/1.4V |
| Low | ||||
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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