javiherdepa

Hello everyone, I have a problem with the indicator light of the coolant level, it is always on, correct coolant level, new level sensor, wiring without continuity, pressure sensor connector disconnected and it does not turn off, could it be the ecu 92864160201? someone knows the diagram or connections of the pins that control the warning light of refrigerant level, I hope your help, thank you very much.

mkhargrove

I had this problem. Disconnect the wires plugged to the top of the coolant reservoir (coolant level sensor). Then disconnect the wires at the coolant pressure sensor (just move down the fender from the coolant tank...sorry, but I started this post before I got a link to a pic).

It would seem that disconnecting the two switches that more or less each have the capability of turning on that light would make the light go out when they're disconnected, huh? Well, I ended up "rebooting" by disconnecting the battery for a couple minutes and when I reconnected, the light was out. I reconnected the wires, and everything works properly now.

javiherdepa

ok, thank you very much but I've already tried it and it's the same, what else can I do?: banghead:

mkhargrove

Did you drain the juice out of the system (i.e. turn on lights) with the sensors disconnected, and the battery disconnected?

javiherdepa

With the two sensors disconnected, it is still on, which is why I think the problem may be the ECU that controls the warning lights.

mkhargrove

agreed....and disconnecting the battery with the wires disconnected from sensors, and draining it, restarting the car with sensors still disconnected resulted in a light off for me. i cant imagine how yours is holding the "data"

javiherdepa

for that reason I think it must be a problem of the ECU that controls the warning lights, but I do not know which pins correspond to that control light.

javiherdepa

the two poles of the connector that goes to the refrigerant pressure sensor give me continuity can it be a failure of the same wiring at some point? which are the pins of those cables in the ecu?
thank you very much.

mkhargrove

hang on....lets make sure we're talking about the same thing....refrigerant is what's inside your air conditioner compressor, evaporator, etc. There is a low pressure switch for refrigerant.

antifreeze/coolant is what's in the coolant reservoir, and your radiator, as well as in passages in your engine block. if your coolant light is on, the switches that are part of the AC system are not the cause. so lets make sure you're not disconnecting the wrong thing.

the coolant pressure sensor is not far from the reservoir tank.

take a look at this....

http://jenniskens.livedsl.nl/technic.../MyTip1111.htm

javiherdepa

If that is what I am referring to, the engine coolant pressure sensor is not ac, the wiring of the same gives me continuity and should not, how to follow its routing to get where it is peeling or damaged? and locate the pins in the ecu.