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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 49 (MANUAL A/C-HEATER SYSTEMS)COOLING UNITON-VEHICLE INSPECTION
2004 Toyota Matrix XR, FWD, Standard

On-Vehicle Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION On-Vehicle Inspection
WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect for leakage of refrigerant.
    1. Remove the glove compartment door.
    2. Remove the lower No. 2 finish panel.
    3. Remove the lower center cover.
    4. Remove the lower LH finish panel.
    5. Remove the lower cover. See step 22 underREMOVAL under INSTRUMENT PANEL.
    6. Remove the blower resistor.
      1. Disconnect the connector.
      2. Remove the 2 screws and blower resistor.
        Fig 1: Locating Screws For Removal Of Blower Resistor
        G01090979Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
    7. Using a gas leak detector, check for leakage.
      1. If there is leakage, check the tightening torque at the joints or check the evaporator.
    8. Install the blower resistor with the 2 screws.
    9. Install the lower cover.
    10. Install the lower LH finish panel.
    11. Install the lower center cover.
    12. Install the lower No. 2 finish panel.
    13. Install the glove compartment door. See INSTALLATION .
  2. Inspect expansion valve.
    1. Check quantity of gas during refrigeration cycle.
    2. Set on manifold gauge set.
    3. Run engine.
      1. Run the engine at 1,500 rpm for at least 5 minutes.
      2. Then check that the high pressure reading is 1.37 - 1.57 Mpa (14 - 16 kgm/cm2 , 199 - 288 psi).
    4. Check expansion valve.
      1. If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/cm2 , 0 psi).
        NOTE: When the lower pressure drop to 0 kPa (0 kgf/cm2 , 0 psi), feel the receiver's IN and OUT sides for no temperature difference.
  3. Inspect thermistor resistance.
    1. Disconnect the connector.
    2. Measure resistance between terminals.
        Fig 2: Displaying Terminal
        G01090980Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard resistance: 1,500 Ξ© at 25Β° C (77Β° F)
      2. If resistance is not as specified, replace the thermistor.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.