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2010 Mazda 5 How to Troubleshoot Oxygen Sensor

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  1. 2010 Mazda 5 How to Troubleshoot Oxygen Sensor, Fuse box check: шаг 1, изображение 1 из 1
    • Check the fuse for the pre-heating of the oxygen sensor (in this case #37)

  2. 2010 Mazda 5 How to Troubleshoot Oxygen Sensor, Enummerate pins: шаг 2, изображение 1 из 1
    • Unplug the sensor and decide on a numbering scheme. Also clean the pins to ensure this is not a connection problem

  3. 2010 Mazda 5 How to Troubleshoot Oxygen Sensor, Meassure: шаг 3, изображение 1 из 1
    • Check all combinations of the pins of problematic sensor. See comparison chart above (with the new replacement sensor).

    • If you do not have such a tester, a normal multimeter (resistance and capacitance) should be sufficient

    • If you would like a transistor tester, you can search Aliexpress for one. It is an amasing little device. https://www.aliexpress.com/item/10050015...


Leasson learned: probe the oxygen sensor pins if you experience problems:

  • Pin 1-2 is the pre-heating element, and should show around 5-6 Ohm (meaning that the pre-heating must be using around 60W)
  • All other combinations of pins should show a capacitance around 50 pF

There is a clear difference in the meassurements when comparing the defect part and the new replacement part.

Here are some good resources on Mazda and oxygen sensors, but remember: meassure the pins and look for signs of a defect device before you start taking tings apart






Участник с: 03/05/16

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