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#1
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How easy is it to test AC switches?
I want to test the two switches on the receiver/drier. Both the thermoswitch and the AC temp switch. My auxillary fans won't come on and because of this the compressor won't run. Which switch controls this function?
Thanks |
#2
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Jumper the sw with the two pigtail wires and see if aux fan comes ON low speed.
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A Dalton Last edited by Arthur Dalton; 06-06-2009 at 02:31 PM. |
#3
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No low speed fan
My low speed fan does not work also but compressor does come on but i switch it off because my a/c gauges some high side going over 400.
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#4
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Quote:
Chevy ????
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A Dalton |
#5
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tested switch...
when I connect the two pigtails together, key in the on position, the relay in the fuse panel clicks...but no fans come on? Does this mean the switch is good or bad. Is the relay good or bad.
Chuck |
#6
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It means you have verified the relay coil circuit as OK, and you now have a Load side problem.
That usually means a fuse or the wries at the Resistor .R15 Jumper from bat Pos to R15 : To single wire terminal on R15 gets low fan To 2 wire therminal on R15 gets high fan If No to either , the fan is bad If Yes to high fan , and No to low fan..the R15 is bad. If Yes to both sides , then the Aux fan fuse is suspect. You want to list model/year.......
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A Dalton |
#7
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Sorry 92 190e 2.3
Have jumper the a/c switch with nothing no clicking at relay or no power to ether side of resistor.
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#8
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Sorry, this is for a '93 190e 2.6. Where can I find the R15 resistor? I'll test this next if you'll show me where it's located.
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#9
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Down in the left/front of engine compartment..usually behind the left headlamp area.
If not , try around the booster area.
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A Dalton |
#10
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Quote:
But first, bring a jumper from Bat + to each side of R15 ...one at a time . One side will get high fan, the other low.. Try that first
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A Dalton |
#11
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power
jumper power to one for low then other for high
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#12
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[QUOTE=MB Nebrasaka;2218111]jumper power to one for low then other for high
Yeah...and ?????
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A Dalton |
#13
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both work
Yes both work. Sorry
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#14
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Good ..it does help if you give me the test results cuz I can't read minds anymore since that Kryptonite stuff hit me ... Change fuses 1 and 3 and then test both fan circuits High fan test: Key ON pull connector off the 2 wire blu sensor at the thermo housing Low Fan test: Bridge pigtail wires at pressure sw. again.
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A Dalton |
#15
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O.K. Tried a wire from battery to one wire terminal, then two wire terminal: no to both. I made sure I was getting power by touching wire from battery to metal: got spark.
Does this mean both of the auxillary fans are bad? Will the fans not coming on mean the compressor will not come on? Is it common for these fans to go bad? Thanks for your help. Bear with me. |
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