Question about 1988 Nissan Pulsar
I came to the conclusion that there is no power to the switch that turns on the air conditioner. I was working on the dash board everything else works but the air conditioner and the switch that turns it on. using a multi tester I found that the switch is not getting power. The fuses are in working order.
Not all switches switch the possitive side of the electrical cicuit, sometimes it switches the negative side and than you wont find current there. The airconditioner unit has a low pressure switch in the system somewhere in the pipe that monitors the amount of gas in the system and if the gas is not enough the switch will not allow current to flow through to the compressor, it is just to protect the compressor from siezing up if there is no lubricant in the system
Posted on Jan 15, 2009
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