2003 Honda Pilot EXFACTORY OEM SERVICE PROCEDURE

Power Window Control Unit Input Test

  1. Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ), but leave the driver's door sub-harness connector connected to the driver's door wire harness.
  2. Disconnect the 18P connector (A) from the power window control unit (B).
    Fig 1: Disconnecting The 18P Connector From The Power Window Control Unit
    G01465933Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Inspect the connector and socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
    • If the terminals look OK, go to step 4.
  4. With the connector still disconnected, make these input tests at the connectors.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, go to step 5.
    Fig 2: Power Window Control Unit Input Test Chart (1 Of 2)
    G01465934Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Reconnect the 18P connector to the power window control unit and reconnect the passenger's multiplex control unit, then make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the control unit must be faulty; replace it.
      Fig 3: Power Window Control Unit Input Test Chart (2 Of 2)
      G01465935Courtesy of AMERICAN HONDA MOTOR CO., INC.
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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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