ac won't come on

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Jul 21, 2014

mdona91690

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ac won't come on

I can't seem to get the relay for the compressor clutch to come on thru normal means, but if I jump the contacts in the socket the clutch kicks in , pressure switch reads closed, switch on dash seems good, any help would be greatly appreciated 2004 lx sedan Thanks

Jul 21, 2014

ezone

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Re: ac won't come on

Pull the relay out.
Check (voltmeter) the contacts for the relay coil. One should have power, the other should have ground-- if all is going to work. Which is missing?

There are many possible reasons the clutch relay may not be turned on.

When you kick the AC on (push the button on the dash) do the radiator fans come on, or not?

Jul 22, 2014

mdona91690

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Re: ac won't come on

cooling fans don't come on when I hit the a/c switch, positive voltage on one side of rely coil no ground thru other side. thanks

Jul 22, 2014

ezone

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Re: ac won't come on

There's a 3 wire connector for the compressor.

One of those wires goes to the clutch coil.

The other two are for the thermal protection device. See if that measures as open circuit.