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Thanks for the input. Yes, the horn works. The PCM (keep alive) fuse is not blown. It also has 12V on both sides of the fuse when the key is out. I pulled each and every fuse and checked them out. They are all good. Thanks for the picture. I have a 98 explorer XLT. So, the fuse lay out is not...

I checked the pins as you specified and verified that pin 25, 51, 77 and 103 have continuity to ground. Pin 24 and 76 do not have connectors and hence do not have any contact to be measured.

Thank you very much. I shall do that ASAP. The process has been very logical.

I tested and verified that pin #55 has 12v. So, is PCM the culprit? Thanks.

I'm about to disconnect the PCM connector to check terminal 55. Is there a danger of causing airbags to pop by removing the PCM connector without disconnect the battery terminal first? Do I need to disconnect the battery negative terminal first, then disconnect PCM connector, then connect the...

How funny that I searched the word PCM and not "Powertrain Control Module" that I missed fuse #6. This time, I not only visually inspected fuse #6, but also used a multi-meter to measure it. It's good. I further removed, inspected and measured each and every mini fuse. They are all good. For...

First of all, thanks very much for providing the help. I used the 1998 Ford Explorer User Manual, and checked fuse 19 (PCM power diode) in the fuse box on driver side dash board, and also fuse 10 (PCM power relay) in the fuse box under the hood. They both are good. There is a PCM Power Relay...

My 1998 explorer OBD shows 5 monitors not ready (incomplete) for smog check. However, if the vehicle is driven to a state that the monitors are ready, turning the engine off will cause them to go incomplete again. To keep them ready for smog, I have to keep the engine running. What kind of...

Hi, Found this great forum and got lots of tips already. Thanks. -Cerritos