| ID | Status | Date | Year | Make | Model | Transmission Type | A/C Controls | Public/Private |
|---|---|---|---|---|---|---|---|---|
| #14641 | Closed | 2003 | Ford | Focus | public |
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I too have 2003 Ford Focus SP1 2.0 SOHC. The original problem was alternator was defective. I replaced alternator but now AC blows hot air and fans don’t come on. All worked fine before I replaced the alternator. I see from your original post you use a scan tool that list real time conditions from the PCM. Such as ” Fan Control Low – On” and list multiple other on/off or hi/low conditions. Can you suggest a scan tool such as the one in that original post that offers those real time diagnostic features? I currently have a simple OBD2 scan tool that just provides codes. Any advice is much appreciated. Thanks. |
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The scan tool I used in that article was an OTC Genisys. There are a lot of used ones out there and they can be had from for around $200 and up. There are many modern DIY tool out there with the same general capabilities but you have to make sure that they will read vehicle specific live data. |
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Thanks for the follow up. Sorry for the delay in responding. Once I get my new scan tool I will keep you posted in what I find. I dont believe it is relay or fuse issues. I have swapped out all relays with new ones relating to the cooling fan circuit. I am almost positive it is “pre-check conditions” that the PCM looks for prior to sending the command to the relay to engage the clutch on the compressor. |