2012 Infiniti FX50FACTORY OEM SERVICE PROCEDURE

Component Description

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
POWER WINDOW CONTROL SYSTEM COMPONENTS FUNCTION CHART

Component Function
BCM
  • Supplies power to power window switch.
  • Controls retained power function.
  • Receives key ID from remote keyless entry receiver (front side/rear side).
Power window main switch
  • Directly controls all power window motor of all doors.
  • Controls anti-pinch operation of power window.
Front power window switch (passenger side)
  • Controls power window motor of front passenger side door.
  • Controls anti-pinch operation of power window.
Rear power window switch (LH & RH) Controls power window motor of rear right and left window.
Front power window motor (driver side)
  • Integrates the encoder and power window motor.
  • Starts operating with signals from power window main switch.
  • Outputs front power window motor (driver side) rotation as a pulse signal to power window main switch.
Front power window motor (passenger side)
  • Integrates the encoder and power window motor.
  • Starts operating with signals from power window main switch and front power window switch (passenger side).
  • Outputs front power window motor (passenger side) rotation as a pulse signal to front power window switch (passenger side).
Rear power window motor (LH & RH)
  • Integrates the encoder and power window motor.
  • Starts operating with signals from power window main switch and rear power window switch (LH & RH).
  • Outputs rear power window motor (LH & RH) rotation as a pulse signal to rear power window switch (LH & RH).
Front door lock assembly (driver side) (door key cylinder switch) Transmits operation condition of key cylinder switch to power window.
Remote keyless entry receiver (front side/rear side) Receives key ID signal from the Intelligent Key, and then transmits to BCM.
Soft top control unit
  • Prohibits operation of all power windows while roof is being operated.
  • Operates AUTO-DOWN of all power windows before roof is operated.
Front door switch Detects door open/close condition and transmits to BCM.
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.