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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 627 (COMBINATION METER - DIAGNOSTICS)MALFUNCTION IN OUTSIDE TEMPERATURE DISPLAYINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CLOCK ASSY 
    1. Check voltage.
      1. Remove the clock assy with connector still connected.
      2. Turn the ignition switch to ON.
      3. Measure voltage between terminals 2 (SG) and 3 (TH+) of clock assy connector at each temperature.

      Voltage: 

      at 25°C (77°F): 1.35 - 1.75 V 

      at 40°C (104°F): 0.85 - 1.25 V 

      HINT:

      As the temperature increases, the voltage decreases.

      Fig 1: Identifying Clock Assy Terminals
      G02895150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: CHECK AND REPLACE CLOCK ASSY 
    2. NG: Go to next step. 
  2. INSPECT COOLER (AMBIENT TEMP. SENSOR) THERMISTOR 
    1. Disconnect cooler (ambient temp. sensor) thermistor connector.
    2. Measure resistance between terminals 1 and 2 of cooler (ambient temp. sensor) thermistor connector at each temperature.

      Resistance: 

      at 25°C (77°F): 1.6 - 1.8 kΩ 

      at 40°C (104°F): 0.5 - 0.7 kΩ 

    HINT:

    As the temperature increases, the resistance decreases.

    Fig 2: Identifying Ambient Temp. Sensor Terminals
    G02895151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE COOLER (AMBIENT TEMP. SENSOR) THERMISTOR 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 
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.