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26 October, 08:07

Technician A says that temperature sensors decrease in resistance as the temperature increases; this is called positive temperature coefficient (PTC). Technician B says that some vehicle manufacturers use a stepped ECT circuit inside the PCM to broaden the accuracy of the sensor. Who is right?

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  1. 26 October, 10:59
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    Technician B.

    Explanation:

    The claim of technician B that some vehicle manufacturers use a stepped ECT circuit inside the PCM to broaden the accuracy of the sensor is correct.
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