2005 Toyota Avalon XLSFACTORY OEM SERVICE PROCEDURE

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE - POWER WINDOW CONRTOL SYSTEM

Symptoms Suspected Area
Power window does not operate at all
  1. Power source circuit (multiplex network master switch assy)
  2. Multiplex network master switch assy
Driver side power window does not operate
  1. Power source circuit (multiplex network master switch assy)
  2. Power window motor circuit (driver side)
  3. Multiplex network master switch assy
Passenger side power window does not operate (with master switch)
  1. Communication signal circuit
  2. Multiplex network master switch assy
Passenger side power window does not operate (with front passenger switch)
  1. Power source circuit (front passenger switch)
  2. Multiplex network switch assy
  3. Power window motor circuit (front passenger side)
Rear LH power window does not operate
  1. Power source circuit (multiplex network master switch assy)
  2. Power window motor circuit (rear LH)
  3. Power window regulator switch circuit (rear LH)
Rear RH power window does not operate
  1. Power source circuit (multiplex network master switch assy)
  2. Power window motor circuit (rear RH)
  3. Power window regulator switch circuit (rear RH)
Jam protection function and AUTO UP/DOWN function do not operate on driver side
  1. Auto up/down function circuit (driver side)
  2. Multiplex network master switch assy
  3. Power window regulator motor assy
Jam protection function and AUTO UP/DOWN function do not operate on front passenger side
  1. Auto up/down function circuit (front passenger side)
  2. Multiplex network switch assy
  3. Power window regulator motor assy (front passenger side)
Window lock function does not operate
  1. Window lock signal circuit
  2. Multiplex network master switch assy
Window control function does not operate
  1. Communication signal circuit
  2. Multiplex network master switch assy
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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