2016 Mazda 6 Grand TouringFACTORY OEM SERVICE PROCEDURE

ECT Sensor No. 2

  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  3. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  4. Disconnect the ECT sensor No. 2 connector.
    Fig 1: Disconnecting ECT Sensor No. 2 Connector
    G10985610Courtesy of MAZDA MOTORS CORP.
  5. Disconnect the hoses. (See HOSE CONNECTION NOTE .)
    Fig 2: Disconnecting Hoses
    G10985611Courtesy of MAZDA MOTORS CORP.
  6. Remove the nut from the water pipe.
    Fig 3: Removing Nut From Water Pipe
    G10985612Courtesy of MAZDA MOTORS CORP.
  7. Move the water pipe in the direction of the arrow shown in the figure to remove it. (See WATER PIPE INSTALLATION NOTE .)
    Fig 4: Moving Water Pipe
    G10985613Courtesy of MAZDA MOTORS CORP.
  8. Remove the ECT sensor No. 2 using the SST  .
    Fig 5: Removing ECT Sensor No. 2 Using SST
    G10985614Courtesy of MAZDA MOTORS CORP.
  9. Install in the reverse order of removal.
  10. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
Factory Service Tools

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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.