I have a 93 F150 with automatic transmission. The power door locks stopped working, so I came to this forum and found a reference to the following page:

http://fordfuelinjection.com/?p=13

I went to that page and performed the EEC test. What happened is that after the fuel pumps and relays stopped, the very brief flash came (the Check Engine light), then 33, then a single flash, then 33 again, then nothing, and I mean nothing after that. I performed the test several times, each time having the same result.

I have checked the fuse block in the cab and all fuses are fine. Likewise, all fuses in the power distribution box under the hood are fine.

Right now, I think there must be some electrical problem because the EEC test would not give me the complete results.

Any ideas on how I should proceed next?

 

I'm guessing you are getting a 111, 111 space, 111 111 for an all clear - no problems. The computer codes won't help you with a power door lock problem though.

 

Instead of the space I was getting a 1, which according to what I read is a separator, so it was 111, 111, pause, 1, pause, 111, 111.

If that means all clear. Then good. I just tried again and now my passenger door lock is working, so perhaps it is just the driver side. So, I will take the panel off and have a look.