Cool Air By-Pass Damper Control Servomotor: Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Driver side: REMOVE COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR 
    1. Remove the No. 1 under cover.
    2. Remove the 2 air ducts.
    3. Disconnect the connector.
    4. Disconnect the control rod.
    5. Remove the 3 screws and servomotor.
      Fig 1: Removing Cool Air By-Pass Damper Control Servomotor (Driver Side)
      G01317337Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Passenger side: REMOVE COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR 
    1. Remove the finish panel assembly (See INSTRUMENT PANEL ).
    2. Remove the blower unit (See REMOVAL ).
    3. Disconnect the connector.
    4. Remove the 3 screws and servomotor.
      Fig 2: Removing Cool Air By-Pass Damper Control Servomotor (Passenger Side)
      G01317338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Driver side: INSPECT COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR CIRCUIT (See  COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR CIRCUIT (DRIVER SIDE)  ). 
  4. Driver side: INSPECT COOL AIR BY-PASS DAMPER POSITION SENSOR CIRCUIT (See  COOL AIR BY-PASS DAMPER POSITION SENSOR CIRCUIT (DRIVER SIDE)  ). 
  5. Passenger side: INSPECT COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR CIRCUIT (See  COOL AIR BY-PASS DAMPER CONTROL SERVOMOTOR CIRCUIT (DRIVER SIDE)  ). 
  6. Passenger side: INSPECT COOL AIR BY-PASS DAMPER POSITION SENSOR CIRCUIT (See  COOL AIR BY-PASS DAMPER POSITION SENSOR CIRCUIT (PASSENGER SIDE)  ). 
  7. INSTALL AIR BYPASS DAMPER CONTROL SERVOMOTOR 
RENDER: 1.0x

NO RELATED

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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.