Compressor Relay & Compressor Test
WARNING: This page is about a different car, the 1996 Oldsmobile LSS, 1996 Oldsmobile Eighty-Eight, and 1996 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect height sensor connector. Connect jumper wire between Yellow wire terminal of height sensor connector and ground.
- If compressor runs, perform HEIGHT SENSOR TEST . If compressor does not run, disconnect compressor relay connector. Measure voltage between ground and both Orange wire terminals of compressor relay connector. If battery voltage is not present, check for open or short to ground in Orange wires or for faulty fuse.
- If battery voltage is present, cycle ignition off then on, and measure voltage between Orange wire terminal (No. 30) and Yellow wire terminal of compressor relay connector. Wait 35-45 seconds. If no voltage is present, perform HEIGHT SENSOR TEST . If battery voltage is present for 3-5 seconds, go to next step.
- Connect a fused jumper wire between Orange wire terminal (No. 30) and Yellow wire terminal of compressor relay connector. If compressor does not run, go to next step. If compressor runs, check for open in Yellow wire and height sensor connector for poor terminal connection. If wire and connection are okay, replace compressor relay.
- Leave fused jumper wire connected at compressor relay connector as in previous step. Disconnect compressor connector. Measure voltage between Dark Green wire terminal of compressor connector and ground. If battery voltage is not present, check for open in Dark Green wire.
- If battery voltage is present, measure voltage between Dark Green and Black wire terminals of compressor connector. If battery voltage is not present, check for open in Black wire. If battery voltage is present, check compressor connector for poor connection. If connection is okay, perform COMPRESSOR OPERATION TEST under COMPONENT TESTING.