I have had problems with my door locks. I need to check the relays somewhere behind my passenger air bag. I hear them operate but resistance checks show poor contacts on the relays or faulty grounds. how can I remove the air bag safely or get to these relays. any help would be appreciated. thanks. fixer1
#2 my 91 chevy caprice. Where is the horn relay? thanks

 

Check your grounds first. Expecially behind the rh kick panel. If you need to get at the relays, they aren't great to get at, but on some, if you remove the center panel you can get at them. If you have to remove the passenger airbag, unhook the battery for a minimum of 1 minute then you can remove it. Sorry on the caprice, I'm no help.

 

Thanks. I will try that. seems I heard someone say that a while back.

 

The relay block behind the airbag module is accessed by removing that large oval panel on top of the passenger side of the dash. It just snaps into place.

Your actuators are probably more likely bad though.

 

I had looked at this ground before, but this time I removed it and cleaned the paint off the surfaces and re-tightened it. I also cleaned the battery terminals, and the ground connections from the battery to the cab (2 ea) right behind the battery. I did not clean the one going to the engine. but still no joy. same old thing. once in a while as I start to drive the door locks come in with a vengence that appears to me a poor connection somewhere and just maybe it is the relay contacts. and a continuity check from the door solenoid to ground shows something like 32 ohms and the other wire 400 ohms and according to my schematic it should be nearly 0 ohms on the low resistance leg. the only thing it shows from the solenoid wires and ground are the relay contacts. When trying to accuate the locks it sounds like I have a 2 volt battery instead of a 12 volt one and the battery voltage is fine. also 12 volts get applied to the hot wire on the the door solenoid. How do I get to these relays? help if you can. thanks

 

found it on the flasher board by steering collum. airbag switches both bad. parts ordered so this ends that problem

 

Am I understanding that the air bag switches fixed your door lock problem? If so, which switches are you talking about and where are they located? My 2000 F150 is having similar problems. The locks try to work, but seem to not be getting enough voltage (with switches or the remote).

 

I must have confused you. airbag switches were faulty on a 91 chevy. replaced them and the chevy is fine. I still have a problem with door locks on my 2000 F150. I'm wanting to check the relays involved but sofar I have not found them. will possible remove the airbag one day to see if they are behind it. I'm getting a little slow so I get to things when I can. It seems everyone wants me to replace the door lock itself. perhaps that is the only solution. ws.

 

I'm working on mine about the same pace you are working on yours. If I fix mine before you fix yours, I'll let you know what I find...

 

Yes, I finally ordered the new actuator and put the one in the right door and it now works. A little difficult working in the tight little space. inside door cable,outside door cable, key lock rod,inside door lock button, 2 electrical connectors, but it worked and locks seem to be fine. now I have to do the driver door one day. happy days ws

 

Finished. Just completed the driver's door. went much the same way as the passenger door. Torq wrench used to remove the mechanism is not in some sets. I also found that an air wrench works wonderful as ford puts some locktite on these bolts. All in all I find that after doing it, A pretty simple job. My thanks to your forum and the input from everyone. ws PS. my thanks to www.fordparts.com for the help in obtaining the parts. Ken was quite helpful.