Announcement

Collapse
No announcement yet.

Grounding issue?

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Grounding issue?

    I knew it wasn't the damn blower motor. It works perfectly when it does work.

    Here's the issue. Sometimes the heater/blower works perfectly fine - and when it does, all speeds work, there's no odd noises, etc. When the blower motor is functioning, the power mirrors operate as well.

    BUT

    if the blower goes out, so do the mirrors. Do they share a ground somewhere? When I first put the car to ignition, usually the blower works fine, then when I start it, it won't work. Hit a big bump just right and it comes back now and then.

    All signs seem to point to a loose ground that occasionally gets contact now and then - it's one of the few logical explanations for the patchy blower activity in conjunction with the loss of power mirrors.

    This may or may not be related - the horn doesn't work, whether or not the blower is functioning. What is the circuit of the horn, and what could be wrong? As far as I know, it was working fine before...

    Is that small copper colored slide pin at the bottom of the column behind the wheel facing the driver part of the horn system? It was zip-tied in place and I had to undo it when I replaced the turn signal switch - I thought I put it back right - does it even matter?
    Tags: None
    #2
    They both share the g200 grounding point under the LH side of the dash above the brake pedal.

    The slide pin you described sounds like the one used for the horn. It slides on metal circular contact on the back of steering wheel.

    Comment

      #3
      Originally posted by DaN
      They both share the g200 grounding point under the LH side of the dash above the brake pedal.

      The slide pin you described sounds like the one used for the horn. It slides on metal circular contact on the back of steering wheel.
      Damn, that was fast - so that common ground above the brake pedal is where I should look first - nice.

      As for that slide pin - it's riveted to the column (or should be...) so it's not an easy to replace part - any other way better than zip tying? How can I test to see if that's where my problem is?

      Comment

        #4
        The spring loaded pin should be connected to the ignition lock with 2, 5mm screws and nuts. Yours is ziptied in? Probably a source of problem there, the pin should have continuity to the negative control side of the relay.

        Maybe check the fuse first, and perhaps jump the relay, because they are easier to access. Then pop off the wheel and take a look at the pin and horn buttons.

        Comment

          #5
          Originally posted by DaN
          The spring loaded pin should be connected with 2, 5mm screws and nuts. Yours is ziptied in? Probably a source of problem there, the pin should have continuity to the negative control side of the relay.

          Maybe check the fuse first, and perhaps jump the relay, because they are easier to access. Then pop off the wheel and take a look at the pin and horn buttons.
          Screws and nuts? Mine was riveted as far as I know - but one rivet was broken, so it was zip-tied. I'll take another look at it.

          Continuity with the negative control side of the relay - what relay, and which is the negative control side?

          Checked the fuse - that was easy ;) Again, which relay am I jumping and what pins?

          Sorry to ask so many questions - just want to get as much details as I can before tearing into it tomorrow.

          Comment

            #6
            The epc shows screws and nuts, perhaps yours is different.
            Do you have any diagrams, or relay locations etc?

            I was refering to the horn relay (k2), the pin at the wheel should have continuity with pin 85 on the relay. This should get grounded when you press the horn, which closes the contacts in the relay and sends power to the horns.
            Last edited by DaN; 04-02-2006, 07:29 AM.

            Comment

              #7
              Originally posted by DaN
              The epc shows screws and nuts, perhaps yours is different.
              Do you have any diagrams, or relay locations etc?

              I was refering to the horn relay (k2), the pin at the wheel should have continuity with pin 85 on the relay. This should get grounded when you press the horn, which closes the contacts and sends power to the horns.
              Interesting - I'll check on the mounting.

              k2 - in the fuse box?

              Comment

                #8
                Yea, the horn relay is in the fuse box.

                Comment

                  #9
                  Originally posted by DaN
                  They both share the g200 grounding point under the LH side of the dash above the brake pedal.

                  The slide pin you described sounds like the one used for the horn. It slides on metal circular contact on the back of steering wheel.
                  http://www.r3vlimited.com/board/showthread.php?t=65443&highlight=blower


                  No luck at the g200 - but looking at the wiring diagrams, they do share that same common ground. WTF!

                  Comment

                  Previous template Next
                  Working...
                  X