blackbeast ss

iTrader: (4)

ok cool compressor is goodok check voltage at the relay terminal for 12 volts if you have voltage then jump out the relay and see if the compressor comes on

dlt76028

iTrader: (13)

I didn't have voltage on number 87 on the relay.

sixltrbtr

iTrader: (5)

Put voltage there to see if the compressor will come on from there. Do you have voltage at 30?

sixltrbtr

iTrader: (5)

What is the year/make/model/engine?

dlt76028

iTrader: (13)

2000 chevy silverado.

I had volts on 86 and 30, but none on 87 and 85 had like .04

sixltrbtr

iTrader: (5)

You should have voltage at 86 and 30. the computer grounds pin 85 to energize the realay witch connects 30 to 87 and turns on the compressor. Make a jumper to go between 30 and 87 and the compressor should turn on. That will tell you at least that much is working. If it comes on the computer isn't sending a ground signal to pin 85 for some reason. Let me know what you find. Oh make sure you plugged the compressor back in from where you were testing it before for this to work.

dlt76028

iTrader: (13)

I just jumped 87 to 30 and nothing happen.

sixltrbtr

iTrader: (5)

Do you have a long jumper wire? Try to connect one end to the battery positive terminal and the other to pin 87 and see if the compressor comes on.

dlt76028

iTrader: (13)

Yea I did that too, and nothing happen?

sixltrbtr

iTrader: (5)

You need to check G102. It's a ground connection on the drivers side of the block. It should be at the same place the negative battery cable is bolted to the block. There should be two wires there. When did you first start having the problem?