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.
2010 Kia Forte EX, AutomaticFACTORY OEM SERVICE PROCEDURE
TCM Terminal Input/Output Signal
TRANSAXLE CONTROL MODULE TERMINAL INPUT/OUTPUT CHART
| Pin No. | Signal Description | Condition | Input, Output Value | Test Result | |
|---|---|---|---|---|---|
| Type | Level | ||||
| A3 | Variable Force Solenoid (Linear Solenoid) | Output/PWM | signal: 3.0 < Iscb < 5.0A supply: V_VFS | ||
| A4 | Solenoid valve OD | Output/PWM | signal: 3.0 < Iscb < 5.0A supply: V_SOL | ||
| A5 | Solenoid valve LR | Output/PWM | signal: 3.0 < Iscb < 5.0A supply: V_SOL | ||
| A6 | Over Drive Lamp | Reserved (Not Used) | |||
| A7 | Spare Input | Reserved (Not Used) | |||
| A8 | Cruise control lamp signal | Lamp ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V |
12.37 V (Vbatt Level) |
| Lamp OFF | 0.2 V | ||||
| A9 | Inhibitor switch D | D ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A10 | Inhibitor switch 3 or Sports mode select switch | 3 ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A11 | Inhibitor switch 2 or Sports Up switch | 2 ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A12 | Inhibitor switch L or Sports Down switch | L ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A17 | Solenoid valve DCC | Output/PWM | signal: 8.0 < Iscb < 11.0A supply: V_SOL | ||
| A18 | Power supply for VFS | ON | Power | 12.4V (Vbatt Level) | |
| OFF | 0.3V | ||||
| A20 | TCU ground | Ground | -0.3V ~ +0.5V | ||
| A21 | Spare output | Reserved (Not Used) | |||
| A22 | OD Off Request from Auto-Cruise | Reserved (Not Used) | |||
| A23 | Hold switch input | Hold ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V |
12.37 V (Vbatt Level) |
| Hold OFF | 0.2 V | ||||
| A24 | Inhibitor switch N | N ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A25 | Inhibitor switch R | R ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A26 | Inhibitor switch P | P ON | Input/static signal | Vlow < 1.8V Vhigh > 4.2V Active : high |
12.37 V (Vbatt Level) |
| Others | 0.2 V | ||||
| A27 | Spare input | Reserved (Not Used) | |||
| A32 | Solenoid valve 2ND | Output/PWM | signal: 3.0 < Iscb < 5.0A supply: V_SOL | ||
| A33 | Solenoid valve UD | Output/PWM | signal: 3.0 < Iscb < 5.0A supply: V_SOL | ||
| A34 | TCU ground | Ground | -0.3V ~ +0.5V | ||
| A35 | TCU ground | Ground | -0.3V ~ +0.5V | ||
| A36 | Gear Info to Trip computer | Output/PWM | 50 Hz | ||
| A37 | Auto-Cruise Release Request | ON | Output/static signal | 12.37 V (Vbatt Level) | |
| OFF | 0.2 V | ||||
| A38 | Input speed PG-A | No signal: 2068rpm | pulse | Vlow < 1.8V Vhigh > 4.2V |
|
| A39 | Output speed PG_B sensor ground | Ground | -0.3V ~ +0.5V | ||
| A40 | A/T Fluid temp sensor (Oil Temp sensor) | analog | V = -0.3~VB | ||
| A47 | Power supply for Solenoid valves 1 | ON | Power | 12.4V (Vbatt Level) | |
| OFF | 0.3V | ||||
| A48 | Power supply for Solenoid valves 2 | ON | Power | 12.4V (Vbatt Level) | |
| OFF | 0.3V | ||||
| A49 | Battery voltage supply for V_SOL1/2 | IGK_ON | Power | 12.4V (Vbatt Level) | |
| IGK_OFF | 0.3V | ||||
| A50 | Battery voltage supply for V_SOL1/2 | IGK_ON | Power | 12.4V (Vbatt Level) | |
| IGK_OFF | 0.3V | ||||
| A51 | Vehicle speed output to Cluster | pulse | 1.0 < Icl < 2.0A | ||
| A52 | Break pedal switch | Brake ON | sens | Vlow < 1.0V Vhigh > 6V |
12.37 V (Vbatt Level) |
| Brake OFF | 0.2 V | ||||
| A53 | Input speed PG_A sensor ground | Ground | -0.3V ~ +0.5V | ||
| A54 | Output speed PG-B | No signal: 2068rpm | pulse | Vlow < 1.8V Vhigh > 4.2V |
|
| A55 | ATF sensor ground (Oil Temp sensor ground) | Ground | -0.3V ~ +0.5V | ||
| A56 | Spare input | Reserved (Not Used) | |||
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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