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.
2012 Infiniti FX50FACTORY OEM SERVICE PROCEDURE
Input/Output Signal Chart
| Sensor | Input signal to TCM | TCM function | Actuator | ||
|---|---|---|---|---|---|
| Input speed sensor 1, 2 | Input speed | Shift pattern control |
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| Output speed sensor | Vehicle speed | ||||
| A/T fluid temperature sensor | ATF temperature | ||||
| ECM | Engine speed signal(1) | ||||
| Accelerator pedal position signal(1) | |||||
| Closed throttle position signal(1) | |||||
| Engine and A/T integrated control signal (engine torque)(1) | |||||
| ABS actuator and electric unit (control unit) | Side G sensor signal(1) | ||||
| BCM | Stop lamp switch signal(1) | ||||
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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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