(This post was edited by Discretesignals on Jun 8, 2013, 7:27 AM) Check for power at that pin while someone holds the brake pedal down. You want to take a small paper clip or even better a sewing pin and back probe the connector at the the light blue wire on pin B. Don't unplug the connector when making your check. The connector you want to play with is connector C1 which is the blue connector. If you look at the wiring diagram above there is a little box (CONN ID) inside the rear junction block that lists the connector colors. The location is on the left frame rail near the rear of the vehicle. The next place that you could check is at the junction block for the rear lamps. (This post was edited by Hammer Time on Jun 8, 2013, 3:12 AM) There is also a 15amp VEH STOP fuse that is the likely culprit.Īgain, this one is only hot when applying the brake. There is a 25amp STOP LP fuse in the underhood fuse box. (This post was edited by cfreeman5343 on Jun 7, 2013, 7:35 PM) Testing while pressing brake pedal.fuse lights up the tester. Ok.I guess that means you can probably laugh at me. "You are testing that VEH STOP 15 amp fuse while your pressing the brake pedal right?" At this point I'm gonna guess not getting power to the fuse itself for some reason? So very confused. Tried replacing the 15 amp with a fuse I knew was good from testing in another location. (This post was edited by Discretesignals on Jun 7, 2013, 7:28 PM) You are testing that VEH STOP 15 amp fuse while your pressing the brake pedal right? Test lamp does light up when I test other fuses for functions of the vehicle that are working.Īnother trip to wal-mart to get a 15 amp fuse maybe? Or something with the wiring? I tried replacing it with a spare fuse, that one doesn't light up the test lamp either. Test lamp does NOT light up when testing the 15 amp fuse. Two, went to wal-mart, bought a cheapo test lamp. (This post was edited by Discretesignals on Jun 7, 2013, 6:51 PM) Your going to need either one to be able to isolate the problem unless you visually see it. You can verify with a volt meter or test lamp. The area you'll be isolating the problem in is between the fuse and bulbs if the fuse checks out.
If the turn signals in the rear work, you can pretty much conclude you have a good ground, so you are probably missing power to the bulbs. (This post was edited by Discretesignals on Jun 7, 2013, 6:38 PM)
I don't think the stop lamps run through the turn signal switch. Well it's not just when the turn signal is on All the lights are working except for rear two brake lights when pedal is depressed. The brake lights don't work any of the time. Well it's not just when the turn signal is on. What does it tell me about the problem if I get a positive result? What about a negative? Figure it's something I should own, so I'll go get one. We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. The 2 lower lights pass through the switch so the turn signals can cancel the brake lights. You most likely have a bad combination switch. (This post was edited by Discretesignals on Jun 7, 2013, 6:21 PM) Thanks for the input.Īny other ideas? I've been going over fuses and can't seem to figure out what's wrong. Yeah, I did some more research on this and found that I shouldn't bother replacing the brake switch. (This post was edited by Discretesignals on Jun 7, 2013, 5:56 PM) Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. BOO is one of the inputs for the engine computer on a Ford. It won't work because if the brake switch was bad the third brake lamp wouldn't function either.īOO is a term used by Ford. In the meantime I'm going to replace the brake light switch under the brake pedal. Anyone know where this might be or if it might be the problem? What else might be the problem? I read somewhere about a BOO (brake on/off) switch possibly going bad. I've checked the fuses - all good, replaced the bulbs.
My back-up lights, hazard flashers and blinkers all work on the back. The cargo brake light works, but not the two most rear brake lights. My brake lights on the bed of my truck don't work when I depress the pedal. Auto Repair Home> Automotive Repair> Automotive Wiring and Electrical
0 kommentar(er)
