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Home >> Mazda >> 2000 >> MPV ES >> Repair and Diagnosis >> External Pages >> Different car >> Section 446 (Control System (HVAC)) >> THERMOSENSOR Inspection >> To Determine If The Sensor Is Functioning
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To Determine If The Sensor Is Functioning

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start the engine.
  2. Turn the A/C switch on.
  3. Turn the front fan switch on.
  4. Connect the positive (+) and negative (-) probes of the tester to terminal A and terminal C of the thermosensor respectively. (The wiring harness connector must be connected to the thermosensor connector.)
  5. Inspect the voltage as shown below.
    • If there is any malfunction, inspect on/off points of the thermosensor.
    Magnetic clutch Voltage (V)
    On B+
    Off 0
    Fig 1: Inspecting Thermosensor Voltage
    G03700746Courtesy of MAZDA MOTORS CORP.
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