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.
2017 Infiniti QX50 AWDFACTORY OEM SERVICE PROCEDURE
Component Description
| Name | Function |
|---|---|
| TCM | The TCM consists of a microcomputer and connectors for signal input and output and for power supply. The TCM controls the A/T. |
| Output speed sensor | DESCRIPTION |
| Input speed sensor 1 | DESCRIPTION |
| Input speed sensor 2 | |
| A/T fluid temperature sensor | DESCRIPTION |
| Input clutch solenoid valve | DESCRIPTION |
| Front brake solenoid valve | DESCRIPTION |
| Direct clutch solenoid valve | DESCRIPTION |
| High and low reverse clutch solenoid valve | DESCRIPTION |
| Low brake solenoid valve | DESCRIPTION |
| Anti-interlock solenoid valve | DESCRIPTION |
| 2346 brake solenoid valve | DESCRIPTION |
| Line pressure solenoid valve | DESCRIPTION |
| Torque converter clutch solenoid valve | DESCRIPTION |
| ECM | SYSTEM DESCRIPTION |
| BCM | SYSTEM DESCRIPTION |
| ABS actuator and electric unit (control unit) | SYSTEM DESCRIPTION |
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.