Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
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. Actuator check. 

    PREPARATION: 

    1. Warm up engine.
    2. Set to the actuator check mode (See PRE-CHECK ).
    3. Press the UP switch and change it to step operation.

    CHECK: 

    Press the UP temperature control switch and check the operation of the air mix damper and the condition of the blower.

    OK: 

    Air Mix Damper condition

    Display Code Air Mix Damper Condition
    0 - 3
    4 - 6
    7 - 9
    0 % (Fully closed)
    50 %
    100 % (Fully opened)
    Cool air comes out
    -
    Warm air comes out
    1. OK : Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE  ). 
    2. NG : Go to next step. 
  2. Check air mix damper control step motor. 

    PREPARATION: 

    Remove air mix damper control step motor (See AIR MIX SERVOMOTOR ).

    CHECK: 

    Measure resistance between terminals 3 and other terminals.

    OK: 

    Resistance 

    Fig 1: Identifying Air Mix Damper Control Step Motor
    G03376790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.