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The radiator fan working continuously.
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<blockquote data-quote="ගමේ හාදයා" data-source="post: 16192745" data-attributes="member: 497290"><p><span style="font-size: 18px">Today I checked my Corolla AE110 Car again.</span></p><p><span style="font-size: 18px"></span></p><p><span style="font-size: 18px">* It Comes with "Normally-Closed" Relay (4 Pin)</span></p><p><span style="font-size: 18px">* The Positive (+) Line of the radiator fan is switching by this relay</span></p><p><span style="font-size: 18px">* I checked there is <strong><u>+12V on both pins of the relay Coil </u></strong>(But no voltage difference in each pin, It's 0V, So the relay is not activating)</span></p><p><span style="font-size: 18px">* Therefore the fan is working continuously </span></p><p><span style="font-size: 18px">* The thermostat sensor comes with single wire</span></p><p><span style="font-size: 18px">* I think the body of the thermostat sensor is working as other terminal</span></p><p><span style="font-size: 18px">* Both terminals are reading as short-circuited with the chassy (Battery -)</span></p><p><span style="font-size: 18px">* There is no direct connection with the fan relay. </span></p><p><span style="font-size: 18px">* I couldn't find any modified point in this circuit</span></p><p><span style="font-size: 18px"></span></p><p><span style="font-size: 18px">Please help me to solve this problem.</span></p></blockquote><p></p>
[QUOTE="ගමේ හාදයා, post: 16192745, member: 497290"] [SIZE="5"]Today I checked my Corolla AE110 Car again. * It Comes with "Normally-Closed" Relay (4 Pin) * The Positive (+) Line of the radiator fan is switching by this relay * I checked there is [B][U]+12V on both pins of the relay Coil [/U][/B](But no voltage difference in each pin, It's 0V, So the relay is not activating) * Therefore the fan is working continuously * The thermostat sensor comes with single wire * I think the body of the thermostat sensor is working as other terminal * Both terminals are reading as short-circuited with the chassy (Battery -) * There is no direct connection with the fan relay. * I couldn't find any modified point in this circuit Please help me to solve this problem.[/SIZE] [/QUOTE]
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