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Home >> Mazda >> 2025 >> CX-5 S Select >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VIN L) >> Engine Coolant Temperature (ECT) Sensor Inspection >> ECT Sensor No. 1 >> Function inspection
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Function inspection

  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON (engine off).
  3. Display the PID ECT. (See ON-BOARD DIAGNOSTIC TEST [PCM (VIN L (WITHOUT CYLINDER DEACTIVATION))] .) (See PCM INSPECTION [VIN L (WITHOUT CYLINDER DEACTIVATION)] .)
  4. Compare the voltage and temperature indications for the PID ECT with the standard in the table indicated below.
    STANDARD SPECIFICATION

    ECT
    V °C {°F}
    Approx. 3.10 20 {68}
    Approx. 2.16 40 {104}
    Approx. 1.40 60 {140}
    Approx. 0.87 80 {176}
    Approx. 0.54 100 {212}