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Operation Principle<\/h3>\n
The main component used on Temperature Sensors for automotive systems are thermistors (NTC type resistors). These sensors are composed of a capsule or support, where the NTC element is assembled. (Fig.1<\/b>). As shown in (Fig.2<\/b>), the main feature of the thermistor (NTC: Negative Temperature Coefficient) is presenting an accentuated variation of its electric resistance in relation to its temperature.<\/p>\n
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Temperature increase -> resistance\u00a0reduce<\/b><\/strong> The sensor assembly will depend on its use on the engine. When its purpose is to measure the engine coolant temperature, the NTC thermistor is located inside a protected capsule, isolating it from the liquid coolant. <\/p>\n Engine Coolant Temperature Sensor:<\/b>\u00a0In the Thermostat housing, on the engine block or on the intake manifold base.\u00a0 in cases where the cooling fluid flows through it (engines powered by alcohol). <\/p>\n Engine Coolant Temperature Sensor \u2013 Used to:<\/b><\/p>\n Fuel System Air Temperature Sensor \u2013 Used to:<\/b><\/p>\n <\/p>\n <\/p>\n Important actions when changing the temperature sensor:<\/b><\/p>\n <\/p>\n For these Sensors there are three failure types:<\/b><\/p>\n <\/p>\n In all cases, the diagnostic can be done with the use of test equipment (scanner tool) or voltmeter. <\/p>\n <\/p>\n All MTE-THOMSON products are guaranteed for 01(one) year against defects from faulty materials or fabrication. The guarantee is limited to the replacement of the faulty part; we cannot extend the guarantee to cover defects caused by misuse, neglect, accident or wear and tear. We cannot accept liability for consequential loss or damage which is claimed to have resulted from the use of one of our products. More information: www.mte-thomson.com.br<\/p>\n","protected":false},"featured_media":9616,"template":"","linha_de_produto":[],"categoria":[54],"class_list":["post-8825","produtosmte","type-produtosmte","status-publish","has-post-thumbnail","hentry","categoria-temperature"],"acf":[],"_links":{"self":[{"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/produtosmte\/8825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/produtosmte"}],"about":[{"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/types\/produtosmte"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/media\/9616"}],"wp:attachment":[{"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/media?parent=8825"}],"wp:term":[{"taxonomy":"linha_de_produto","embeddable":true,"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/linha_de_produto?post=8825"},{"taxonomy":"categoria","embeddable":true,"href":"https:\/\/mte-thomson.com\/en\/wp-json\/wp\/v2\/categoria?post=8825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nTemperature\u00a0reduce<\/b>\u00a0-> resistance increase<\/strong><\/p>\n
\nFor sensors destined to air temperature measurement (air cooling, outer\/inner air), the NTC element remains exposed to airflow.
\nNote:<\/b>\u00a0The air change temperature sensor (ACT) can be associated with the manifold absolute pressure sensor (MAP) forming a combined sensor, which in some cases is identified as MAT<\/p>\nLocation<\/h3>\n
\nAir Change or Fuel System Temperature Sensor:<\/b>\u00a0In the intake manifold (multipoint systems) or in the cover of the throttle body (mono-point systems).<\/p>\nUse<\/h3>\n
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When it does not work<\/h3>\n
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Maintenance<\/h3>\n
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Diagnostic<\/h3>\n
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TEMPERATURE SENSOR<\/h3>\n
\nFor case 1:<\/b>\u00a0Use mode \u201ccheck working parameters\u201d and compare it with the current engine\u2019s temperature or inlet air temperature.
\nFor case 2:<\/b>\u00a0Use mode \u201cRead stored failures\u201d.
\nFor case 3:<\/b>\u00a0With the sensor connected and using a voltmeter, check the presence of tension peaks in the sensor\u2019s signal measurement, while the engine warms from ambient temperature until proper working temperature. The sensor analysis (short or open circuit) is performed with the use of an ohmmeter. To check the calibration, in addition to the ohmmeter, it is crucial to have the current-voltage characteristic and the calibration specs supplied by the manufacturer.<\/p>\nCares<\/h3>\n
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Warranty<\/h3>\n