New Toyota Tazz Ignition Wiring Diagram Toyota Corolla Questions - My Engine Fan Turns On When I Turn The

New Toyota Tazz Ignition Wiring Diagram Toyota Corolla Questions - My Engine Fan Turns On When I Turn The
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Toyota Corolla Questions - My engine fan turns on when I turn the - I've a 1999 toyota corolla and when i turn the ignition activate the motor fan turns on with out the engine being on. The engine is cold and the entirety. I've researched and discovered out which relay switches are for each fan and changed them, i've replaced the engine coolant sensor subsequent to the thermostat, and i've changed the pc. Granted all replacement components were used. Relays were taken from a junk backyard however had 6 general relays of the equal numbers, and 2 sensors. I am playing off of the odds that there's no manner that each one relays and sensors are bad, and the laptop i ordered turned into used as properly. I do now not consider its the laptop but wanted to strive. The automobile does no longer overheat or have any other malfunctions. My only challenge is that the fan may additionally ultimately burn out from continuously walking, and that its some thing that i need to recognise what is inaccurate with it. Do you have got  any idea what it could be?. ?V=w8bgmjdzl10 shows the format of the ninety nine corolla relays. The green relay (the one the guy is looking a "condensator" rofl) is the radiator cooling fan relay (eight) and the grey relay at the pinnacle right is the engine important relay (7). Please put up your reviews here after trying this diagnostic technique in addition to any additional findings, so others can study. If the cooling fan switch seems to be stuck inside the off position, however then you degree a quick circuit (0-10 ohms) among the cooling fan switch terminal and the engine block (indicating the cooling fan transfer is closed), then there could be a fault (open) in the wiring harness. With the ignition off, measure the resistance among the cooling fan switch receptacle at the harness (you may need to unplug it to achieve this) and the cooling fan relay coil socket. One of the coil socket receptacle contacts must be linked at once to the cooling fan switch receptacle at the harness. Eliminate the cooling fan relay, then degree between touch 2 on object 8 within the drawing and twine l or cord l/b on item 10. (Should be 0-ten ohms). If now not, the wiring harness has an open among the ones two factors. Since you've got already swapped relays and switches, that is likely the case. The most probable failure factor is the end of the harness that connects to the cooling fan switch (object 10) at or above the cooling fan switch receptacle, considering this receptacle is on the switch (item 10) that is at the motor and vibrates with the motor, which can fatigue the cord or the crimp connection at the receptacle. You can try slicing the receptacle off of every other car as far up the harness as possible (so that you have the cooling fan transfer receptacle on the cease of say, 1.5 ft of cord), doing the same for your automobile, and splicing within the "new one" (with both solder and electrical tape, for certain) on the point in which you narrow off the antique one. Allow us to realize what occurs!!!!. Somebody ought to have stressed you fan immediately to the battery so whilst the car is became at the fan ought to come on. They may have done this due to the fact maybe the opposite fan is broken (my corolla has fanatics). Additionally you do recognise that the plug that connects as much as there thermostat housing if now not linked will turn your fan on all of the time that is a safety degree simply incase the thermostat locks closed.

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