2 speed resistor system
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On a 3 speed system the increases are additive. So medium speed is obtained by activating both the low speed and the medium speed relay. So on a 2 speed system when Toaf earths the UY wire, which is open circuit, the low speed continues to run. That's why you thought you heard low and medium speeds to be the same. In fact you were hearing low speed twice. Your test also shows that high speed is triggered at 112 degrees and not 105/106 degrees. Something very strange is going on with Joe's car. I would like to see which colour wires are connected to which pins in the loom plugs. Unfortunately that's impossible at the moment with the photos posted. Simon |
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Mike |
2 speed resistor control box, petrol, marked SRB2
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Yellow is the +12v supply to both relay coils (always live). Blue is earthed by the ECM to operate the low speed relay (small, centre position). Blue/red is earthed by the ECM to operate the high speed relay (large, end position). Simon |
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Mike |
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Simon |
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i had the front of the car of and observed this numerous times. I keep using the term loud/noisey, what i really mean is it is very powerful. |
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I have this photo of the wires into the relay |
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In my post no.84, my blue trigger wires are reversed, does your motor have a resistor? Regards ps Get Toaf you'll be amazed what it can do ... testing fans is just a small part |
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I've installed the gold resistor. Big wires reversed? Not sure. Big learning curve for me on this, fan operations. Heres me thinking everything is fixed and now it's thought my is weird, not looking forward to taking the from apart again! |
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