oo stype heater control valve
#1
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cant find good info on how it operates , good voltage on the center wire red and no change(ground) on other two when changing from hot to cold on both drivers and pass sides . cant decide if the heater control valve or control is my problem. car came in with an a/c problem no cool air another shop replaced compresor and way over charged system evac and recharge now we have great condensation but 100+ deg drivers side and 85ish pass .
temps go much cooler when pinch off heater hoses
temps go much cooler when pinch off heater hoses
#2
#3
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sorry just learning how this site works . 00 S-type 3.0 liter with 113000 miles, the voltage reading i took were with control valve disconnected. realy not sure how valve is controled , is it supplied voltage or ground and is the control module part of the control head in the dash????????
#4
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It's well described in previous posts (which is why the FAQs and Search exist) but basically the module changes the voltage on each of the outer pins of the valve (which of course needs to be connected) as you change the heat settings for L & R. If the voltages don't change then either the module is faulty (most likely) or an input to it makes it think it doesn't need to change the output.
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tech 1 (07-13-2011)
#5
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located problems; found three, 1st a/c way over charged(2.76) evac recharge to 1.75lb,2nd one side of heater control valve is failing and the other is bad,3rd found a burnt spot on the ccm board prob. from shorted valve , customer also stated that they have had battery problems (parasitic drain)parts needed for repair ,climate control module, coolant control valve, and fluids
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tech 1 (07-14-2011)
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it is a 001 suffix, this is what you need for a direct replacement. A new 1 will work, but theyre programmed for right hand drive from the uk, so it will have to be programmed or configured to us standards. Or they can live with it working opposite. The passenger temp controls are the primary control and the drivers side are secondary. To go to max cold or hot you will have to operate the temp controls on the passenger side of the faceplate. Or you can repair the circuit board like discussed already since you see where the open burned circuit is at. And replace the heater control valve
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