2004 PONTIAC VIBE FUSE BOX DIAGRAM FULL

When the 21V hits the AC clutch, it pulls in the shaft of the AC compressor, where it grabs the otherwise fee spinning compressor pulley. This will engage the clutch relay, and send 12V from the AC fuse to the AC clutch, The AC clutch is an electromagnet, the other end of it gets ground from mechanical connection to the engine block. The computer should then put out a ground to the AC clutch relay coil, the other end of the relay coil is 12V from the AC fuse. When the engine is running and you hit the AC button on the dash, it sends a signal to the car computer. If it does, then while activated you should be able to use a multimeter to check for connectivity between the two larger contacts on the relay Now if everything so far checks ok, use kostby's trick from that other thread to put 12V between the two smaller silver contacts on the relay itself, you should feel the relay activate. (I suspect that if that fuse was bad, the AC switch wouldn't light up when pushed) If you don't get 12V there, then check or replace the 10A AC fuse in the unpleasant to access under dash fuse block. If that all tests ok, then with the ignition ON (not off or acc, and the engine need not be running, as long as the HVAC blower will run), use a multimeter to check for 12V between the clutch relay socket terminal marked 12V from Fuse and ground. Seems like the probability is low that a problem would be in the wire. To test the wire,disconnect the wire from the clutch, and either 1) use a multimeter to test for connectivity between the wire end and the To clutch terminal of the relay socket or 2) use a wire to put battery + on the To clutch terminal of the relay socket and use a multimeter to look for 12V between the end of the wire and ground. If the clutch doesn't engage, then either the clutch or the wire from the fuse block to the clutch is bad. If the clutch engages, then you will know that the clutch and the wire going from the fuse block to the clutch are ok. With the car not running pull that relay and use a wire to connect 12V from the battery to the relay socket terminal marked 12V to clutch. There is a clutch relay in the underhood fuse block. A lot has been discussed above and in viewtopic.php?f=28&t=37869 There are a number of things that can prevent 12V getting to the clutch. You never said what year you had, so assuming 03-08. Thank you for responding after all this time! That information really helps. ( but standard caveat, I don't guarantee anything)Ĭlutchwire2.jpg (53.32 KiB) Viewed 1892 times clutchwire.jpg (52.24 KiB) Viewed 1892 times If you read 12V from the connector to ground (11, 12,13,14 volts, somewhere in that range) then the voltage is getting to the clutch, and assuming you are doing this because the clutch doesn't activate, then you probably have a bad clutch. If you read nothing, then there could be a problem with the fuse or relay or something else not allowing the 12V to get to the compressor to activate the clutch. I think the test step you are asking about is to disconnect that wire from the compressor, and with the engine running and the AC turned on, use a multimeter to check the voltage between that cable end connector (only has one pin) and ground, either the engine block or the battery negative terminal. There is a wire that runs to the AC compressor, as shown in the attached images from a 2003 Vibe, should be the same for 03-08's, don't know what year you have. Is that what you used? And how did you do it? Use multimeter or connect the wire to the battery? I only see one wire /connector and that is the one that is connected to the alternator. Mine developed an open in the winding somewhere Pretty sure Toyota used a different compressor, so although quite often parts from a Matrix or corolla will fit the vibe, this is one case where you need the GM part.Īlso, the clutch is basically a large solenoid, the coil is a sealed unit, don't bother hoping it can be fixed by means other than replacing it. GM part number is 88972204, and the GM list price for the AC clutch kit is about $200, but you can get the part cheaper on line. Granted, there may be other things wrong with the AC system you can't know about until the clutch is working, but I think it is worth the chance that the clutch is the only thing wrong, based on my one data point that the clutch was the only thing wrong with mineĭon't know what a shop would charge for that job, perhaps a couple of hours of not cheap labor.

2004 PONTIAC VIBE FUSE BOX DIAGRAM FULL

The AC clutch is a separately replaceable part, so if you take it to a shop, my advice is to not let them talk you into the more expensive job of a full compressor replacement.

I had that same sinking feeling only a couple of months ago. Macadoo wrote:Well crud, I have power getting to the clutch.

2004 pontiac vibe fuse box diagram