

| Subject: | Re: Wipers suddenly not working, trip tomorrow |
| From: | Mike South |
| Date: | Sun, 2 Jun 2013 00:46:59 -0500 |
So, I located the relay. I pulled it and put it back in, no change. However, it turned out that I had one of those same relays from the donor van I got my manual transmission stuff from. So, I put it in, and I had wipers! But then I tested intermittent and the pump, and I think it was when I tried to put it down to the intermittent (it's down for intermittent, right?) that it quit working, and I couldn't get it to run on low or high after that. I seem to recall that intermittent mode quit working during a rainy return home right before I started the transmission work (several years ago). Anyway--I'm beat for the night. Tomorrow I'll try tracing the circuit a little further now that I have move of an idea where things are. Thanks again so much for your help, David! mike On Sat, Jun 1, 2013 at 8:29 PM, David Beierl <dbeierl@attglobal.net> wrote: > At 08:33 PM 6/1/2013, Mike South wrote: > Do the heater blower and rear defrost work? > > > Nope. Heater blower does not work, and I am sure I tested that >> after the dash was on because I used the switch on the outside of >> the dash to do it. >> >> If so, the load reduction relay and its drive from the X terminal >> of the ignition switch is good. >> >> >> I pre-emptively replaced the ignition switch with a new one when I >> was putting the dash back on. I know that new does not equal good, >> and also that you should suspect the part you put on last, >> first. How can I test if power is coming off that terminal? >> > > If the headlights work (key on) then the ignition switch X contact is good. > > Key on, rear defrost switch on, verify B+ between two terminals of > rear window element. If yes, load reduction relay is ok, check for > problem at fuse S10. > > > Also where is that load reduction relay, and how would I check it? >> > > Third hole from the left, see 97.10 > > To test, pull it, diagram the labeled terminals, replace it. If > everything now works you had poor contact in the socket. > > Pull relay again, measure voltages to ground as follows (97.66 at > top)in this order: > Terminal 30 - B+ regardless of key. If not present, make sure your > meter ground is good and can read B+ at top of Fuse S8. If so, 4 > mm^2 red wire loop to top of fuse S8. > Terminal 86 - B+ with key on, zero with key off. If no, wiring from > there to ignition key X terminal. > Terminal 85 - ~0 V. If so, check with relay in and key on, still > should be ~0 V. If it's B+ instead, bad ground from there to star > clusters forward of fuse/relay panel. In that case, the 4-way > flashers also will not work. > Terminal 87 - Replace relay, check for B+ with key on, zero with key > off. If zero, very high likelihood bad relay. If relay bad, you can > in emergency remove and open the relay and solder a 4 mm^2 jumper > between terminals 30 and 87. If you do this wipers, heater blowers > (rear heater blower left off diagram apparently), and rear defrost > will be live at all times. > > > >> >> >> Does washer pump work? If so then you've eliminated fuse S10 as a >> problem. >> >> >> If S10 is the tenth fuse starting from the driver's door, the fuse >> looks ok. However, with the key on, there is no power on either end >> of the fuse. >> > > Ok, see above. > > Yrs, > d >
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